Hi,
This series adds i.MX8qxp LVDS PHY mode support for the Mixel PHY in the Freescale i.MX8qxp SoC.
The Mixel PHY is MIPI DPHY + LVDS PHY combo, which can works in either MIPI DPHY mode or LVDS PHY mode. The PHY mode is controlled by i.MX8qxp SCU firmware. The PHY driver would call a SCU function to configure the mode.
The PHY driver is already supporting the Mixel MIPI DPHY in i.MX8mq SoC, where it appears to be a single MIPI DPHY.
Patch 1/5 sets PHY mode in the Northwest Logic MIPI DSI host controller bridge driver, since i.MX8qxp SoC embeds this controller IP to support MIPI DSI displays together with the Mixel PHY.
Patch 2/5 allows LVDS PHYs to be configured through the generic PHY functions and through a custom structure added to the generic PHY configuration union.
Patch 3/5 converts mixel,mipi-dsi-phy plain text dt binding to json-schema.
Patch 4/5 adds dt binding support for the Mixel combo PHY in i.MX8qxp SoC.
Patch 5/5 adds the i.MX8qxp LVDS PHY mode support in the Mixel PHY driver.
Welcome comments, thanks.
v2->v3: * Improve readability of mixel_dphy_set_mode() in the Mixel PHY driver. (Guido) * Improve the 'clock-names' property in the PHY dt binding.
v1->v2: * Convert mixel,mipi-dsi-phy plain text dt binding to json-schema. (Guido) * Print invalid PHY mode in dmesg from the Mixel PHY driver. (Guido) * Add Guido's R-b tag on the patch for the nwl-dsi drm bridge driver.
Liu Ying (5): drm/bridge: nwl-dsi: Set PHY mode in nwl_dsi_enable() phy: Add LVDS configuration options dt-bindings: phy: Convert mixel,mipi-dsi-phy to json-schema dt-bindings: phy: mixel: mipi-dsi-phy: Add Mixel combo PHY support for i.MX8qxp phy: freescale: phy-fsl-imx8-mipi-dphy: Add i.MX8qxp LVDS PHY mode support
.../devicetree/bindings/phy/mixel,mipi-dsi-phy.txt | 29 --- .../bindings/phy/mixel,mipi-dsi-phy.yaml | 107 ++++++++ drivers/gpu/drm/bridge/nwl-dsi.c | 6 + drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c | 269 ++++++++++++++++++++- include/linux/phy/phy-lvds.h | 48 ++++ include/linux/phy/phy.h | 4 + 6 files changed, 423 insertions(+), 40 deletions(-) delete mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.txt create mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml create mode 100644 include/linux/phy/phy-lvds.h
The Northwest Logic MIPI DSI host controller embedded in i.MX8qxp works with a Mixel MIPI DPHY + LVDS PHY combo to support either a MIPI DSI display or a LVDS display. So, this patch calls phy_set_mode() from nwl_dsi_enable() to set PHY mode to MIPI DPHY explicitly.
Cc: Guido Günther agx@sigxcpu.org Cc: Robert Chiras robert.chiras@nxp.com Cc: Martin Kepplinger martin.kepplinger@puri.sm Cc: Andrzej Hajda a.hajda@samsung.com Cc: Neil Armstrong narmstrong@baylibre.com Cc: Laurent Pinchart Laurent.pinchart@ideasonboard.com Cc: Jonas Karlman jonas@kwiboo.se Cc: Jernej Skrabec jernej.skrabec@siol.net Cc: David Airlie airlied@linux.ie Cc: Daniel Vetter daniel@ffwll.ch Cc: NXP Linux Team linux-imx@nxp.com Reviewed-by: Guido Günther agx@sigxcpu.org Signed-off-by: Liu Ying victor.liu@nxp.com --- v2->v3: * No change.
v1->v2: * Add Guido's R-b tag.
drivers/gpu/drm/bridge/nwl-dsi.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c index 66b6740..be6bfc5 100644 --- a/drivers/gpu/drm/bridge/nwl-dsi.c +++ b/drivers/gpu/drm/bridge/nwl-dsi.c @@ -678,6 +678,12 @@ static int nwl_dsi_enable(struct nwl_dsi *dsi) return ret; }
+ ret = phy_set_mode(dsi->phy, PHY_MODE_MIPI_DPHY); + if (ret < 0) { + DRM_DEV_ERROR(dev, "Failed to set DSI phy mode: %d\n", ret); + goto uninit_phy; + } + ret = phy_configure(dsi->phy, phy_cfg); if (ret < 0) { DRM_DEV_ERROR(dev, "Failed to configure DSI phy: %d\n", ret);
This patch allows LVDS PHYs to be configured through the generic functions and through a custom structure added to the generic union.
The parameters added here are based on common LVDS PHY implementation practices. The set of parameters should cover all potential users.
Cc: Kishon Vijay Abraham I kishon@ti.com Cc: Vinod Koul vkoul@kernel.org Cc: NXP Linux Team linux-imx@nxp.com Signed-off-by: Liu Ying victor.liu@nxp.com --- v2->v3: * No change.
v1->v2: * No change.
include/linux/phy/phy-lvds.h | 48 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/phy/phy.h | 4 ++++ 2 files changed, 52 insertions(+) create mode 100644 include/linux/phy/phy-lvds.h
diff --git a/include/linux/phy/phy-lvds.h b/include/linux/phy/phy-lvds.h new file mode 100644 index 00000000..1b5b9d6 --- /dev/null +++ b/include/linux/phy/phy-lvds.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2020 NXP + */ + +#ifndef __PHY_LVDS_H_ +#define __PHY_LVDS_H_ + +/** + * struct phy_configure_opts_lvds - LVDS configuration set + * + * This structure is used to represent the configuration state of a + * LVDS phy. + */ +struct phy_configure_opts_lvds { + /** + * @bits_per_lane_and_dclk_cycle: + * + * Number of bits per data lane and differential clock cycle. + */ + unsigned int bits_per_lane_and_dclk_cycle; + + /** + * @differential_clk_rate: + * + * Clock rate, in Hertz, of the LVDS differential clock. + */ + unsigned long differential_clk_rate; + + /** + * @lanes: + * + * Number of active, consecutive, data lanes, starting from + * lane 0, used for the transmissions. + */ + unsigned int lanes; + + /** + * @is_slave: + * + * Boolean, true if the phy is a slave which works together + * with a master phy to support dual link transmission, + * otherwise a regular phy or a master phy. + */ + bool is_slave; +}; + +#endif /* __PHY_LVDS_H_ */ diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index e435bdb..d450b44 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -17,6 +17,7 @@ #include <linux/regulator/consumer.h>
#include <linux/phy/phy-dp.h> +#include <linux/phy/phy-lvds.h> #include <linux/phy/phy-mipi-dphy.h>
struct phy; @@ -51,10 +52,13 @@ enum phy_mode { * the MIPI_DPHY phy mode. * @dp: Configuration set applicable for phys supporting * the DisplayPort protocol. + * @lvds: Configuration set applicable for phys supporting + * the LVDS phy mode. */ union phy_configure_opts { struct phy_configure_opts_mipi_dphy mipi_dphy; struct phy_configure_opts_dp dp; + struct phy_configure_opts_lvds lvds; };
/**
Hey Liu,
This patch seems to be included in both this series and the "Add some DRM bridge drivers support for i.MX8qm/qxp SoCs" series. Instead of having the two series have a conflict I would suggest either merging them (if that makes sense) or removing this patch from one of them and explicitly stating that there is a dependency on the other series.
(the patch itself still looks good though :) )
On Fri, 11 Dec 2020 at 02:56, Liu Ying victor.liu@nxp.com wrote:
This patch allows LVDS PHYs to be configured through the generic functions and through a custom structure added to the generic union.
The parameters added here are based on common LVDS PHY implementation practices. The set of parameters should cover all potential users.
Cc: Kishon Vijay Abraham I kishon@ti.com Cc: Vinod Koul vkoul@kernel.org Cc: NXP Linux Team linux-imx@nxp.com Signed-off-by: Liu Ying victor.liu@nxp.com
v2->v3:
- No change.
v1->v2:
- No change.
include/linux/phy/phy-lvds.h | 48 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/phy/phy.h | 4 ++++ 2 files changed, 52 insertions(+) create mode 100644 include/linux/phy/phy-lvds.h
diff --git a/include/linux/phy/phy-lvds.h b/include/linux/phy/phy-lvds.h new file mode 100644 index 00000000..1b5b9d6 --- /dev/null +++ b/include/linux/phy/phy-lvds.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/*
- Copyright 2020 NXP
- */
+#ifndef __PHY_LVDS_H_ +#define __PHY_LVDS_H_
+/**
- struct phy_configure_opts_lvds - LVDS configuration set
- This structure is used to represent the configuration state of a
- LVDS phy.
- */
+struct phy_configure_opts_lvds {
/*** @bits_per_lane_and_dclk_cycle:** Number of bits per data lane and differential clock cycle.*/unsigned int bits_per_lane_and_dclk_cycle;/*** @differential_clk_rate:** Clock rate, in Hertz, of the LVDS differential clock.*/unsigned long differential_clk_rate;/*** @lanes:** Number of active, consecutive, data lanes, starting from* lane 0, used for the transmissions.*/unsigned int lanes;/*** @is_slave:** Boolean, true if the phy is a slave which works together* with a master phy to support dual link transmission,* otherwise a regular phy or a master phy.*/bool is_slave;+};
+#endif /* __PHY_LVDS_H_ */ diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index e435bdb..d450b44 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -17,6 +17,7 @@ #include <linux/regulator/consumer.h>
#include <linux/phy/phy-dp.h> +#include <linux/phy/phy-lvds.h> #include <linux/phy/phy-mipi-dphy.h>
struct phy; @@ -51,10 +52,13 @@ enum phy_mode {
the MIPI_DPHY phy mode.- @dp: Configuration set applicable for phys supporting
the DisplayPort protocol.
- @lvds: Configuration set applicable for phys supporting
*/
the LVDS phy mode.union phy_configure_opts { struct phy_configure_opts_mipi_dphy mipi_dphy; struct phy_configure_opts_dp dp;
struct phy_configure_opts_lvds lvds;};
/**
2.7.4
On Fri, 5 Mar 2021 at 16:03, Robert Foss robert.foss@linaro.org wrote:
Hey Liu,
This patch seems to be included in both this series and the "Add some DRM bridge drivers support for i.MX8qm/qxp SoCs" series. Instead of having the two series have a conflict I would suggest either merging them (if that makes sense) or removing this patch from one of them and explicitly stating that there is a dependency on the other series.
(the patch itself still looks good though :) )
After having looked through the rest of the series, and seeing it is pretty much ready to be merged. Feel free to add my r-b to this patch.
Reviewed-by: Robert Foss robert.foss@linaro.org
On Fri, 11 Dec 2020 at 02:56, Liu Ying victor.liu@nxp.com wrote:
This patch allows LVDS PHYs to be configured through the generic functions and through a custom structure added to the generic union.
The parameters added here are based on common LVDS PHY implementation practices. The set of parameters should cover all potential users.
Cc: Kishon Vijay Abraham I kishon@ti.com Cc: Vinod Koul vkoul@kernel.org Cc: NXP Linux Team linux-imx@nxp.com Signed-off-by: Liu Ying victor.liu@nxp.com
v2->v3:
- No change.
v1->v2:
- No change.
include/linux/phy/phy-lvds.h | 48 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/phy/phy.h | 4 ++++ 2 files changed, 52 insertions(+) create mode 100644 include/linux/phy/phy-lvds.h
diff --git a/include/linux/phy/phy-lvds.h b/include/linux/phy/phy-lvds.h new file mode 100644 index 00000000..1b5b9d6 --- /dev/null +++ b/include/linux/phy/phy-lvds.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/*
- Copyright 2020 NXP
- */
+#ifndef __PHY_LVDS_H_ +#define __PHY_LVDS_H_
+/**
- struct phy_configure_opts_lvds - LVDS configuration set
- This structure is used to represent the configuration state of a
- LVDS phy.
- */
+struct phy_configure_opts_lvds {
/*** @bits_per_lane_and_dclk_cycle:** Number of bits per data lane and differential clock cycle.*/unsigned int bits_per_lane_and_dclk_cycle;/*** @differential_clk_rate:** Clock rate, in Hertz, of the LVDS differential clock.*/unsigned long differential_clk_rate;/*** @lanes:** Number of active, consecutive, data lanes, starting from* lane 0, used for the transmissions.*/unsigned int lanes;/*** @is_slave:** Boolean, true if the phy is a slave which works together* with a master phy to support dual link transmission,* otherwise a regular phy or a master phy.*/bool is_slave;+};
+#endif /* __PHY_LVDS_H_ */ diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index e435bdb..d450b44 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -17,6 +17,7 @@ #include <linux/regulator/consumer.h>
#include <linux/phy/phy-dp.h> +#include <linux/phy/phy-lvds.h> #include <linux/phy/phy-mipi-dphy.h>
struct phy; @@ -51,10 +52,13 @@ enum phy_mode {
the MIPI_DPHY phy mode.- @dp: Configuration set applicable for phys supporting
the DisplayPort protocol.
- @lvds: Configuration set applicable for phys supporting
*/
the LVDS phy mode.union phy_configure_opts { struct phy_configure_opts_mipi_dphy mipi_dphy; struct phy_configure_opts_dp dp;
struct phy_configure_opts_lvds lvds;};
/**
2.7.4
On Fri, 2021-03-05 at 16:03 +0100, Robert Foss wrote:
Hey Liu,
This patch seems to be included in both this series and the "Add some DRM bridge drivers support for i.MX8qm/qxp SoCs" series. Instead of having the two series have a conflict I would suggest either merging them (if that makes sense) or removing this patch from one of them and explicitly stating that there is a dependency on the other series.
I choose not to merge them, because they are self-contained respectively and splitting them makes the patch number(14) of the "Add some DRM bridge drivers support for i.MX8qm/qxp SoCs" series look better. I guess this series will land prior to the other one, so I would drop this patch from that series and state the dependency there(actually, I mentioned I also sent this patch via this series there).
(the patch itself still looks good though :) )
Thanks for your review :)
Liu Ying
On Fri, 11 Dec 2020 at 02:56, Liu Ying victor.liu@nxp.com wrote:
This patch allows LVDS PHYs to be configured through the generic functions and through a custom structure added to the generic union.
The parameters added here are based on common LVDS PHY implementation practices. The set of parameters should cover all potential users.
Cc: Kishon Vijay Abraham I kishon@ti.com Cc: Vinod Koul vkoul@kernel.org Cc: NXP Linux Team linux-imx@nxp.com Signed-off-by: Liu Ying victor.liu@nxp.com
v2->v3:
- No change.
v1->v2:
- No change.
include/linux/phy/phy-lvds.h | 48 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/phy/phy.h | 4 ++++ 2 files changed, 52 insertions(+) create mode 100644 include/linux/phy/phy-lvds.h
diff --git a/include/linux/phy/phy-lvds.h b/include/linux/phy/phy-lvds.h new file mode 100644 index 00000000..1b5b9d6 --- /dev/null +++ b/include/linux/phy/phy-lvds.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/*
- Copyright 2020 NXP
- */
+#ifndef __PHY_LVDS_H_ +#define __PHY_LVDS_H_
+/**
- struct phy_configure_opts_lvds - LVDS configuration set
- This structure is used to represent the configuration state of a
- LVDS phy.
- */
+struct phy_configure_opts_lvds {
/*** @bits_per_lane_and_dclk_cycle:** Number of bits per data lane and differential clock cycle.*/unsigned int bits_per_lane_and_dclk_cycle;/*** @differential_clk_rate:** Clock rate, in Hertz, of the LVDS differential clock.*/unsigned long differential_clk_rate;/*** @lanes:** Number of active, consecutive, data lanes, starting from* lane 0, used for the transmissions.*/unsigned int lanes;/*** @is_slave:** Boolean, true if the phy is a slave which works together* with a master phy to support dual link transmission,* otherwise a regular phy or a master phy.*/bool is_slave;+};
+#endif /* __PHY_LVDS_H_ */ diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index e435bdb..d450b44 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -17,6 +17,7 @@ #include <linux/regulator/consumer.h>
#include <linux/phy/phy-dp.h> +#include <linux/phy/phy-lvds.h> #include <linux/phy/phy-mipi-dphy.h>
struct phy; @@ -51,10 +52,13 @@ enum phy_mode {
the MIPI_DPHY phy mode.- @dp: Configuration set applicable for phys supporting
the DisplayPort protocol.
- @lvds: Configuration set applicable for phys supporting
*/
the LVDS phy mode.union phy_configure_opts { struct phy_configure_opts_mipi_dphy mipi_dphy; struct phy_configure_opts_dp dp;
struct phy_configure_opts_lvds lvds;};
/**
2.7.4
This patch converts the mixel,mipi-dsi-phy binding to DT schema format using json-schema.
Comparing to the plain text version, the new binding adds the 'assigned-clocks', 'assigned-clock-parents' and 'assigned-clock-rates' properites, otherwise 'make dtbs_check' would complain that there are mis-matches. Also, the new binding requires the 'power-domains' property since all potential SoCs that embed this PHY would provide a power domain for it. The example of the new binding takes reference to the latest dphy node in imx8mq.dtsi.
Cc: Guido Günther agx@sigxcpu.org Cc: Kishon Vijay Abraham I kishon@ti.com Cc: Vinod Koul vkoul@kernel.org Cc: Rob Herring robh+dt@kernel.org Cc: NXP Linux Team linux-imx@nxp.com Signed-off-by: Liu Ying victor.liu@nxp.com --- v2->v3: * Improve the 'clock-names' property by dropping 'items:'.
v1->v2: * Newly introduced in v2. (Guido)
.../devicetree/bindings/phy/mixel,mipi-dsi-phy.txt | 29 --------- .../bindings/phy/mixel,mipi-dsi-phy.yaml | 72 ++++++++++++++++++++++ 2 files changed, 72 insertions(+), 29 deletions(-) delete mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.txt create mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml
diff --git a/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.txt b/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.txt deleted file mode 100644 index 9b23407..00000000 --- a/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.txt +++ /dev/null @@ -1,29 +0,0 @@ -Mixel DSI PHY for i.MX8 - -The Mixel MIPI-DSI PHY IP block is e.g. found on i.MX8 platforms (along the -MIPI-DSI IP from Northwest Logic). It represents the physical layer for the -electrical signals for DSI. - -Required properties: -- compatible: Must be: - - "fsl,imx8mq-mipi-dphy" -- clocks: Must contain an entry for each entry in clock-names. -- clock-names: Must contain the following entries: - - "phy_ref": phandle and specifier referring to the DPHY ref clock -- reg: the register range of the PHY controller -- #phy-cells: number of cells in PHY, as defined in - Documentation/devicetree/bindings/phy/phy-bindings.txt - this must be <0> - -Optional properties: -- power-domains: phandle to power domain - -Example: - dphy: dphy@30a0030 { - compatible = "fsl,imx8mq-mipi-dphy"; - clocks = <&clk IMX8MQ_CLK_DSI_PHY_REF>; - clock-names = "phy_ref"; - reg = <0x30a00300 0x100>; - power-domains = <&pd_mipi0>; - #phy-cells = <0>; - }; diff --git a/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml b/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml new file mode 100644 index 00000000..c34f2e6 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml @@ -0,0 +1,72 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/mixel,mipi-dsi-phy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Mixel DSI PHY for i.MX8 + +maintainers: + - Guido Günther agx@sigxcpu.org + +description: | + The Mixel MIPI-DSI PHY IP block is e.g. found on i.MX8 platforms (along the + MIPI-DSI IP from Northwest Logic). It represents the physical layer for the + electrical signals for DSI. + +properties: + compatible: + enum: + - fsl,imx8mq-mipi-dphy + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-names: + const: phy_ref + + assigned-clocks: + maxItems: 1 + + assigned-clock-parents: + maxItems: 1 + + assigned-clock-rates: + maxItems: 1 + + "#phy-cells": + const: 0 + + power-domains: + maxItems: 1 + +required: + - compatible + - reg + - clocks + - clock-names + - assigned-clocks + - assigned-clock-parents + - assigned-clock-rates + - "#phy-cells" + - power-domains + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/imx8mq-clock.h> + dphy: dphy@30a0030 { + compatible = "fsl,imx8mq-mipi-dphy"; + reg = <0x30a00300 0x100>; + clocks = <&clk IMX8MQ_CLK_DSI_PHY_REF>; + clock-names = "phy_ref"; + assigned-clocks = <&clk IMX8MQ_CLK_DSI_PHY_REF>; + assigned-clock-parents = <&clk IMX8MQ_VIDEO_PLL1_OUT>; + assigned-clock-rates = <24000000>; + #phy-cells = <0>; + power-domains = <&pgc_mipi>; + };
On Fri, 11 Dec 2020 09:46:20 +0800, Liu Ying wrote:
This patch converts the mixel,mipi-dsi-phy binding to DT schema format using json-schema.
Comparing to the plain text version, the new binding adds the 'assigned-clocks', 'assigned-clock-parents' and 'assigned-clock-rates' properites, otherwise 'make dtbs_check' would complain that there are mis-matches. Also, the new binding requires the 'power-domains' property since all potential SoCs that embed this PHY would provide a power domain for it. The example of the new binding takes reference to the latest dphy node in imx8mq.dtsi.
Cc: Guido Günther agx@sigxcpu.org Cc: Kishon Vijay Abraham I kishon@ti.com Cc: Vinod Koul vkoul@kernel.org Cc: Rob Herring robh+dt@kernel.org Cc: NXP Linux Team linux-imx@nxp.com Signed-off-by: Liu Ying victor.liu@nxp.com
v2->v3:
- Improve the 'clock-names' property by dropping 'items:'.
v1->v2:
- Newly introduced in v2. (Guido)
.../devicetree/bindings/phy/mixel,mipi-dsi-phy.txt | 29 --------- .../bindings/phy/mixel,mipi-dsi-phy.yaml | 72 ++++++++++++++++++++++ 2 files changed, 72 insertions(+), 29 deletions(-) delete mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.txt create mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml
Reviewed-by: Rob Herring robh@kernel.org
Hi, On Fri, Dec 11, 2020 at 09:46:20AM +0800, Liu Ying wrote:
This patch converts the mixel,mipi-dsi-phy binding to DT schema format using json-schema.
Comparing to the plain text version, the new binding adds the 'assigned-clocks', 'assigned-clock-parents' and 'assigned-clock-rates' properites, otherwise 'make dtbs_check' would complain that there are mis-matches. Also, the new binding requires the 'power-domains' property since all potential SoCs that embed this PHY would provide a power domain for it. The example of the new binding takes reference to the latest dphy node in imx8mq.dtsi.
Cc: Guido Günther agx@sigxcpu.org Cc: Kishon Vijay Abraham I kishon@ti.com Cc: Vinod Koul vkoul@kernel.org Cc: Rob Herring robh+dt@kernel.org Cc: NXP Linux Team linux-imx@nxp.com Signed-off-by: Liu Ying victor.liu@nxp.com
v2->v3:
- Improve the 'clock-names' property by dropping 'items:'.
v1->v2:
- Newly introduced in v2. (Guido)
.../devicetree/bindings/phy/mixel,mipi-dsi-phy.txt | 29 --------- .../bindings/phy/mixel,mipi-dsi-phy.yaml | 72 ++++++++++++++++++++++ 2 files changed, 72 insertions(+), 29 deletions(-) delete mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.txt create mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml
diff --git a/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.txt b/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.txt deleted file mode 100644 index 9b23407..00000000 --- a/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.txt +++ /dev/null @@ -1,29 +0,0 @@ -Mixel DSI PHY for i.MX8
-The Mixel MIPI-DSI PHY IP block is e.g. found on i.MX8 platforms (along the -MIPI-DSI IP from Northwest Logic). It represents the physical layer for the -electrical signals for DSI.
-Required properties: -- compatible: Must be:
- "fsl,imx8mq-mipi-dphy"
-- clocks: Must contain an entry for each entry in clock-names. -- clock-names: Must contain the following entries:
- "phy_ref": phandle and specifier referring to the DPHY ref clock
-- reg: the register range of the PHY controller -- #phy-cells: number of cells in PHY, as defined in
- Documentation/devicetree/bindings/phy/phy-bindings.txt
- this must be <0>
-Optional properties: -- power-domains: phandle to power domain
-Example:
- dphy: dphy@30a0030 {
compatible = "fsl,imx8mq-mipi-dphy";clocks = <&clk IMX8MQ_CLK_DSI_PHY_REF>;clock-names = "phy_ref";reg = <0x30a00300 0x100>;power-domains = <&pd_mipi0>;#phy-cells = <0>;};diff --git a/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml b/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml new file mode 100644 index 00000000..c34f2e6 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml @@ -0,0 +1,72 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/mixel,mipi-dsi-phy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml#
+title: Mixel DSI PHY for i.MX8
+maintainers:
- Guido Günther agx@sigxcpu.org
+description: |
- The Mixel MIPI-DSI PHY IP block is e.g. found on i.MX8 platforms (along the
- MIPI-DSI IP from Northwest Logic). It represents the physical layer for the
- electrical signals for DSI.
+properties:
- compatible:
- enum:
- fsl,imx8mq-mipi-dphy- reg:
- maxItems: 1
- clocks:
- maxItems: 1
- clock-names:
- const: phy_ref
- assigned-clocks:
- maxItems: 1
- assigned-clock-parents:
- maxItems: 1
- assigned-clock-rates:
- maxItems: 1
- "#phy-cells":
- const: 0
- power-domains:
- maxItems: 1
+required:
- compatible
- reg
- clocks
- clock-names
- assigned-clocks
- assigned-clock-parents
- assigned-clock-rates
- "#phy-cells"
- power-domains
+additionalProperties: false
+examples:
- |
- #include <dt-bindings/clock/imx8mq-clock.h>
- dphy: dphy@30a0030 {
compatible = "fsl,imx8mq-mipi-dphy";reg = <0x30a00300 0x100>;clocks = <&clk IMX8MQ_CLK_DSI_PHY_REF>;clock-names = "phy_ref";assigned-clocks = <&clk IMX8MQ_CLK_DSI_PHY_REF>;assigned-clock-parents = <&clk IMX8MQ_VIDEO_PLL1_OUT>;assigned-clock-rates = <24000000>;#phy-cells = <0>;power-domains = <&pgc_mipi>;- };
Reviewed-by: Guido Günther agx@sigxcpu.org
Thanks for the conversion! -- Guido
-- 2.7.4
Add support for Mixel MIPI DPHY + LVDS PHY combo IP as found on Freescale i.MX8qxp SoC.
Cc: Guido Günther agx@sigxcpu.org Cc: Kishon Vijay Abraham I kishon@ti.com Cc: Vinod Koul vkoul@kernel.org Cc: Rob Herring robh+dt@kernel.org Cc: NXP Linux Team linux-imx@nxp.com Signed-off-by: Liu Ying victor.liu@nxp.com --- v2->v3: * No change.
v1->v2: * Add the binding for i.MX8qxp Mixel combo PHY based on the converted binding. (Guido)
.../bindings/phy/mixel,mipi-dsi-phy.yaml | 41 ++++++++++++++++++++-- 1 file changed, 38 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml b/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml index c34f2e6..786cfd7 100644 --- a/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml +++ b/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml @@ -14,10 +14,14 @@ description: | MIPI-DSI IP from Northwest Logic). It represents the physical layer for the electrical signals for DSI.
+ The Mixel PHY IP block found on i.MX8qxp is a combo PHY that can work + in either MIPI-DSI PHY mode or LVDS PHY mode. + properties: compatible: enum: - fsl,imx8mq-mipi-dphy + - fsl,imx8qxp-mipi-dphy
reg: maxItems: 1 @@ -40,6 +44,11 @@ properties: "#phy-cells": const: 0
+ fsl,syscon: + $ref: /schemas/types.yaml#/definitions/phandle + description: | + A phandle which points to Control and Status Registers(CSR) module. + power-domains: maxItems: 1
@@ -48,12 +57,38 @@ required: - reg - clocks - clock-names - - assigned-clocks - - assigned-clock-parents - - assigned-clock-rates - "#phy-cells" - power-domains
+allOf: + - if: + properties: + compatible: + contains: + const: fsl,imx8mq-mipi-dphy + then: + properties: + fsl,syscon: false + + required: + - assigned-clocks + - assigned-clock-parents + - assigned-clock-rates + + - if: + properties: + compatible: + contains: + const: fsl,imx8qxp-mipi-dphy + then: + properties: + assigned-clocks: false + assigned-clock-parents: false + assigned-clock-rates: false + + required: + - fsl,syscon + additionalProperties: false
examples:
On Fri, 11 Dec 2020 09:46:21 +0800, Liu Ying wrote:
Add support for Mixel MIPI DPHY + LVDS PHY combo IP as found on Freescale i.MX8qxp SoC.
Cc: Guido Günther agx@sigxcpu.org Cc: Kishon Vijay Abraham I kishon@ti.com Cc: Vinod Koul vkoul@kernel.org Cc: Rob Herring robh+dt@kernel.org Cc: NXP Linux Team linux-imx@nxp.com Signed-off-by: Liu Ying victor.liu@nxp.com
v2->v3:
- No change.
v1->v2:
- Add the binding for i.MX8qxp Mixel combo PHY based on the converted binding. (Guido)
.../bindings/phy/mixel,mipi-dsi-phy.yaml | 41 ++++++++++++++++++++-- 1 file changed, 38 insertions(+), 3 deletions(-)
Reviewed-by: Rob Herring robh@kernel.org
Hi, On Fri, Dec 11, 2020 at 09:46:21AM +0800, Liu Ying wrote:
Add support for Mixel MIPI DPHY + LVDS PHY combo IP as found on Freescale i.MX8qxp SoC.
Cc: Guido Günther agx@sigxcpu.org Cc: Kishon Vijay Abraham I kishon@ti.com Cc: Vinod Koul vkoul@kernel.org Cc: Rob Herring robh+dt@kernel.org Cc: NXP Linux Team linux-imx@nxp.com Signed-off-by: Liu Ying victor.liu@nxp.com
v2->v3:
- No change.
v1->v2:
- Add the binding for i.MX8qxp Mixel combo PHY based on the converted binding. (Guido)
.../bindings/phy/mixel,mipi-dsi-phy.yaml | 41 ++++++++++++++++++++-- 1 file changed, 38 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml b/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml index c34f2e6..786cfd7 100644 --- a/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml +++ b/Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml @@ -14,10 +14,14 @@ description: | MIPI-DSI IP from Northwest Logic). It represents the physical layer for the electrical signals for DSI.
- The Mixel PHY IP block found on i.MX8qxp is a combo PHY that can work
- in either MIPI-DSI PHY mode or LVDS PHY mode.
properties: compatible: enum: - fsl,imx8mq-mipi-dphy
- fsl,imx8qxp-mipi-dphyreg: maxItems: 1
@@ -40,6 +44,11 @@ properties: "#phy-cells": const: 0
- fsl,syscon:
- $ref: /schemas/types.yaml#/definitions/phandle
- description: |
A phandle which points to Control and Status Registers(CSR) module.- power-domains: maxItems: 1
@@ -48,12 +57,38 @@ required:
- reg
- clocks
- clock-names
- assigned-clocks
- assigned-clock-parents
- assigned-clock-rates
- "#phy-cells"
- power-domains
+allOf:
- if:
properties:compatible:contains:const: fsl,imx8mq-mipi-dphy- then:
properties:fsl,syscon: falserequired:- assigned-clocks- assigned-clock-parents- assigned-clock-rates
- if:
properties:compatible:contains:const: fsl,imx8qxp-mipi-dphy- then:
properties:assigned-clocks: falseassigned-clock-parents: falseassigned-clock-rates: falserequired:- fsl,sysconadditionalProperties: false
examples:
Reviewed-by: Guido Günther agx@sigxcpu.org Cheers, -- Guido
-- 2.7.4
i.MX8qxp SoC embeds a Mixel MIPI DPHY + LVDS PHY combo which supports either a MIPI DSI display or a LVDS display. The PHY mode is controlled by SCU firmware and the driver would call a SCU firmware function to configure the PHY mode. The single LVDS PHY has 4 data lanes to support a LVDS display. Also, with a master LVDS PHY and a slave LVDS PHY, they may work together to support a LVDS display with 8 data lanes(usually, dual LVDS link display). Note that this patch supports the LVDS PHY mode only for the i.MX8qxp Mixel combo PHY, i.e., the MIPI DPHY mode is yet to be supported, so for now error would be returned from ->set_mode() if MIPI DPHY mode is passed over to it for the combo PHY.
Cc: Guido Günther agx@sigxcpu.org Cc: Robert Chiras robert.chiras@nxp.com Cc: Kishon Vijay Abraham I kishon@ti.com Cc: Vinod Koul vkoul@kernel.org Cc: Shawn Guo shawnguo@kernel.org Cc: Sascha Hauer s.hauer@pengutronix.de Cc: Pengutronix Kernel Team kernel@pengutronix.de Cc: Fabio Estevam festevam@gmail.com Cc: NXP Linux Team linux-imx@nxp.com Signed-off-by: Liu Ying victor.liu@nxp.com --- Guido, I also print invalid PHY mode from mixel_dphy_configure().
v2->v3: * Improve readability of mixel_dphy_set_mode(). (Guido)
v1->v2: * Print invalid PHY mode in dmesg. (Guido)
drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c | 269 ++++++++++++++++++++++++- 1 file changed, 258 insertions(+), 11 deletions(-)
diff --git a/drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c b/drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c index a95572b..af1ecda 100644 --- a/drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c +++ b/drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c @@ -4,17 +4,31 @@ * Copyright 2019 Purism SPC */
+#include <linux/bitfield.h> #include <linux/clk.h> #include <linux/clk-provider.h> #include <linux/delay.h> +#include <linux/firmware/imx/ipc.h> +#include <linux/firmware/imx/svc/misc.h> #include <linux/io.h> #include <linux/kernel.h> +#include <linux/mfd/syscon.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_platform.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/regmap.h> +#include <dt-bindings/firmware/imx/rsrc.h> + +/* Control and Status Registers(CSR) */ +#define PHY_CTRL 0x00 +#define CCM_MASK GENMASK(7, 5) +#define CCM(n) FIELD_PREP(CCM_MASK, (n)) +#define CA_MASK GENMASK(4, 2) +#define CA(n) FIELD_PREP(CA_MASK, (n)) +#define RFB BIT(1) +#define LVDS_EN BIT(0)
/* DPHY registers */ #define DPHY_PD_DPHY 0x00 @@ -55,8 +69,15 @@ #define PWR_ON 0 #define PWR_OFF 1
+#define MIN_VCO_FREQ 640000000 +#define MAX_VCO_FREQ 1500000000 + +#define MIN_LVDS_REFCLK_FREQ 24000000 +#define MAX_LVDS_REFCLK_FREQ 150000000 + enum mixel_dphy_devtype { MIXEL_IMX8MQ, + MIXEL_IMX8QXP, };
struct mixel_dphy_devdata { @@ -65,6 +86,7 @@ struct mixel_dphy_devdata { u8 reg_rxlprp; u8 reg_rxcdrp; u8 reg_rxhs_settle; + bool is_combo; /* MIPI DPHY and LVDS PHY combo */ };
static const struct mixel_dphy_devdata mixel_dphy_devdata[] = { @@ -74,6 +96,10 @@ static const struct mixel_dphy_devdata mixel_dphy_devdata[] = { .reg_rxlprp = 0x40, .reg_rxcdrp = 0x44, .reg_rxhs_settle = 0x48, + .is_combo = false, + }, + [MIXEL_IMX8QXP] = { + .is_combo = true, }, };
@@ -95,8 +121,12 @@ struct mixel_dphy_cfg { struct mixel_dphy_priv { struct mixel_dphy_cfg cfg; struct regmap *regmap; + struct regmap *lvds_regmap; struct clk *phy_ref_clk; const struct mixel_dphy_devdata *devdata; + struct imx_sc_ipc *ipc_handle; + bool is_slave; + int id; };
static const struct regmap_config mixel_dphy_regmap_config = { @@ -317,7 +347,8 @@ static int mixel_dphy_set_pll_params(struct phy *phy) return 0; }
-static int mixel_dphy_configure(struct phy *phy, union phy_configure_opts *opts) +static int +mixel_dphy_configure_mipi_dphy(struct phy *phy, union phy_configure_opts *opts) { struct mixel_dphy_priv *priv = phy_get_drvdata(phy); struct mixel_dphy_cfg cfg = { 0 }; @@ -345,15 +376,121 @@ static int mixel_dphy_configure(struct phy *phy, union phy_configure_opts *opts) return 0; }
+static int +mixel_dphy_configure_lvds_phy(struct phy *phy, union phy_configure_opts *opts) +{ + struct mixel_dphy_priv *priv = phy_get_drvdata(phy); + struct phy_configure_opts_lvds *lvds_opts = &opts->lvds; + unsigned long data_rate; + unsigned long fvco; + u32 rsc; + u32 co; + int ret; + + priv->is_slave = lvds_opts->is_slave; + + /* LVDS interface pins */ + regmap_write(priv->lvds_regmap, PHY_CTRL, CCM(0x5) | CA(0x4) | RFB); + + /* enable MODE8 only for slave LVDS PHY */ + rsc = priv->id ? IMX_SC_R_MIPI_1 : IMX_SC_R_MIPI_0; + ret = imx_sc_misc_set_control(priv->ipc_handle, rsc, IMX_SC_C_DUAL_MODE, + lvds_opts->is_slave); + if (ret) { + dev_err(&phy->dev, "Failed to configure MODE8: %d\n", ret); + return ret; + } + + /* + * Choose an appropriate divider ratio to meet the requirement of + * PLL VCO frequency range. + * + * ----- 640MHz ~ 1500MHz ------------ --------------- + * | VCO | ----------------> | CO divider | -> | LVDS data rate| + * ----- FVCO ------------ --------------- + * 1/2/4/8 div 7 * differential_clk_rate + */ + data_rate = 7 * lvds_opts->differential_clk_rate; + for (co = 1; co <= 8; co *= 2) { + fvco = data_rate * co; + + if (fvco >= MIN_VCO_FREQ) + break; + } + + if (fvco < MIN_VCO_FREQ || fvco > MAX_VCO_FREQ) { + dev_err(&phy->dev, "VCO frequency %lu is out of range\n", fvco); + return -ERANGE; + } + + /* + * CO is configurable, while CN and CM are not, + * as fixed ratios 1 and 7 are applied respectively. + */ + phy_write(phy, __ffs(co), DPHY_CO); + + /* set reference clock rate */ + clk_set_rate(priv->phy_ref_clk, lvds_opts->differential_clk_rate); + + return ret; +} + +static int mixel_dphy_configure(struct phy *phy, union phy_configure_opts *opts) +{ + if (phy->attrs.mode == PHY_MODE_MIPI_DPHY) + return mixel_dphy_configure_mipi_dphy(phy, opts); + else if (phy->attrs.mode == PHY_MODE_LVDS) + return mixel_dphy_configure_lvds_phy(phy, opts); + + dev_err(&phy->dev, + "Failed to configure PHY with invalid PHY mode: %d\n", + phy->attrs.mode); + return -EINVAL; +} + +static int +mixel_dphy_validate_lvds_phy(struct phy *phy, union phy_configure_opts *opts) +{ + struct phy_configure_opts_lvds *lvds_cfg = &opts->lvds; + + if (lvds_cfg->bits_per_lane_and_dclk_cycle != 7) { + dev_err(&phy->dev, "Invalid bits per LVDS data lane: %u\n", + lvds_cfg->bits_per_lane_and_dclk_cycle); + return -EINVAL; + } + + if (lvds_cfg->lanes != 4) { + dev_err(&phy->dev, "Invalid LVDS data lanes: %u\n", + lvds_cfg->lanes); + return -EINVAL; + } + + if (lvds_cfg->differential_clk_rate < MIN_LVDS_REFCLK_FREQ || + lvds_cfg->differential_clk_rate > MAX_LVDS_REFCLK_FREQ) { + dev_err(&phy->dev, + "Invalid LVDS differential clock rate: %lu\n", + lvds_cfg->differential_clk_rate); + return -EINVAL; + } + + return 0; +} + static int mixel_dphy_validate(struct phy *phy, enum phy_mode mode, int submode, union phy_configure_opts *opts) { - struct mixel_dphy_cfg cfg = { 0 }; + if (mode == PHY_MODE_MIPI_DPHY) { + struct mixel_dphy_cfg mipi_dphy_cfg = { 0 };
- if (mode != PHY_MODE_MIPI_DPHY) - return -EINVAL; + return mixel_dphy_config_from_opts(phy, &opts->mipi_dphy, + &mipi_dphy_cfg); + } else if (mode == PHY_MODE_LVDS) { + return mixel_dphy_validate_lvds_phy(phy, opts); + }
- return mixel_dphy_config_from_opts(phy, &opts->mipi_dphy, &cfg); + dev_err(&phy->dev, + "Failed to validate PHY with invalid PHY mode: %d\n", mode); + return -EINVAL; }
static int mixel_dphy_init(struct phy *phy) @@ -373,27 +510,75 @@ static int mixel_dphy_exit(struct phy *phy) return 0; }
-static int mixel_dphy_power_on(struct phy *phy) +static int mixel_dphy_power_on_mipi_dphy(struct phy *phy) { struct mixel_dphy_priv *priv = phy_get_drvdata(phy); u32 locked; int ret;
- ret = clk_prepare_enable(priv->phy_ref_clk); - if (ret < 0) - return ret; - phy_write(phy, PWR_ON, DPHY_PD_PLL); ret = regmap_read_poll_timeout(priv->regmap, DPHY_LOCK, locked, locked, PLL_LOCK_SLEEP, PLL_LOCK_TIMEOUT); if (ret < 0) { dev_err(&phy->dev, "Could not get DPHY lock (%d)!\n", ret); - goto clock_disable; + return ret; } phy_write(phy, PWR_ON, DPHY_PD_DPHY);
return 0; +} + +static int mixel_dphy_power_on_lvds_phy(struct phy *phy) +{ + struct mixel_dphy_priv *priv = phy_get_drvdata(phy); + u32 locked; + int ret; + + regmap_update_bits(priv->lvds_regmap, PHY_CTRL, LVDS_EN, LVDS_EN); + + phy_write(phy, PWR_ON, DPHY_PD_DPHY); + phy_write(phy, PWR_ON, DPHY_PD_PLL); + + /* do not wait for slave LVDS PHY being locked */ + if (priv->is_slave) + return 0; + + ret = regmap_read_poll_timeout(priv->regmap, DPHY_LOCK, locked, + locked, PLL_LOCK_SLEEP, + PLL_LOCK_TIMEOUT); + if (ret < 0) { + dev_err(&phy->dev, "Could not get LVDS PHY lock (%d)!\n", ret); + return ret; + } + + return 0; +} + +static int mixel_dphy_power_on(struct phy *phy) +{ + struct mixel_dphy_priv *priv = phy_get_drvdata(phy); + int ret; + + ret = clk_prepare_enable(priv->phy_ref_clk); + if (ret < 0) + return ret; + + if (phy->attrs.mode == PHY_MODE_MIPI_DPHY) { + ret = mixel_dphy_power_on_mipi_dphy(phy); + } else if (phy->attrs.mode == PHY_MODE_LVDS) { + ret = mixel_dphy_power_on_lvds_phy(phy); + } else { + dev_err(&phy->dev, + "Failed to power on PHY with invalid PHY mode: %d\n", + phy->attrs.mode); + ret = -EINVAL; + } + + if (ret) + goto clock_disable; + + return 0; clock_disable: clk_disable_unprepare(priv->phy_ref_clk); return ret; @@ -406,16 +591,51 @@ static int mixel_dphy_power_off(struct phy *phy) phy_write(phy, PWR_OFF, DPHY_PD_PLL); phy_write(phy, PWR_OFF, DPHY_PD_DPHY);
+ if (phy->attrs.mode == PHY_MODE_LVDS) + regmap_update_bits(priv->lvds_regmap, PHY_CTRL, LVDS_EN, 0); + clk_disable_unprepare(priv->phy_ref_clk);
return 0; }
+static int mixel_dphy_set_mode(struct phy *phy, enum phy_mode mode, int submode) +{ + struct mixel_dphy_priv *priv = phy_get_drvdata(phy); + int ret; + + if (priv->devdata->is_combo && mode != PHY_MODE_LVDS) { + dev_err(&phy->dev, "Failed to set PHY mode for combo PHY\n"); + return -EINVAL; + } + + if (!priv->devdata->is_combo && mode != PHY_MODE_MIPI_DPHY) { + dev_err(&phy->dev, "Failed to set PHY mode to MIPI DPHY\n"); + return -EINVAL; + } + + if (priv->devdata->is_combo) { + u32 rsc = priv->id ? IMX_SC_R_MIPI_1 : IMX_SC_R_MIPI_0; + + ret = imx_sc_misc_set_control(priv->ipc_handle, + rsc, IMX_SC_C_MODE, + mode == PHY_MODE_LVDS); + if (ret) { + dev_err(&phy->dev, + "Failed to set PHY mode via SCU ipc: %d\n", ret); + return ret; + } + } + + return 0; +} + static const struct phy_ops mixel_dphy_phy_ops = { .init = mixel_dphy_init, .exit = mixel_dphy_exit, .power_on = mixel_dphy_power_on, .power_off = mixel_dphy_power_off, + .set_mode = mixel_dphy_set_mode, .configure = mixel_dphy_configure, .validate = mixel_dphy_validate, .owner = THIS_MODULE, @@ -424,6 +644,8 @@ static const struct phy_ops mixel_dphy_phy_ops = { static const struct of_device_id mixel_dphy_of_match[] = { { .compatible = "fsl,imx8mq-mipi-dphy", .data = &mixel_dphy_devdata[MIXEL_IMX8MQ] }, + { .compatible = "fsl,imx8qxp-mipi-dphy", + .data = &mixel_dphy_devdata[MIXEL_IMX8QXP] }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, mixel_dphy_of_match); @@ -436,6 +658,7 @@ static int mixel_dphy_probe(struct platform_device *pdev) struct mixel_dphy_priv *priv; struct phy *phy; void __iomem *base; + int ret;
if (!np) return -ENODEV; @@ -467,6 +690,30 @@ static int mixel_dphy_probe(struct platform_device *pdev) dev_dbg(dev, "phy_ref clock rate: %lu\n", clk_get_rate(priv->phy_ref_clk));
+ if (priv->devdata->is_combo) { + priv->lvds_regmap = + syscon_regmap_lookup_by_phandle(np, "fsl,syscon"); + if (IS_ERR(priv->lvds_regmap)) { + ret = PTR_ERR(priv->lvds_regmap); + dev_err_probe(dev, ret, "Failed to get LVDS regmap\n"); + return ret; + } + + priv->id = of_alias_get_id(np, "mipi_dphy"); + if (priv->id < 0) { + dev_err(dev, "Failed to get phy node alias id: %d\n", + priv->id); + return priv->id; + } + + ret = imx_scu_get_handle(&priv->ipc_handle); + if (ret) { + dev_err_probe(dev, ret, + "Failed to get SCU ipc handle\n"); + return ret; + } + } + dev_set_drvdata(dev, priv);
phy = devm_phy_create(dev, np, &mixel_dphy_phy_ops);
Hi, On Fri, Dec 11, 2020 at 09:46:22AM +0800, Liu Ying wrote:
i.MX8qxp SoC embeds a Mixel MIPI DPHY + LVDS PHY combo which supports either a MIPI DSI display or a LVDS display. The PHY mode is controlled by SCU firmware and the driver would call a SCU firmware function to configure the PHY mode. The single LVDS PHY has 4 data lanes to support a LVDS display. Also, with a master LVDS PHY and a slave LVDS PHY, they may work together to support a LVDS display with 8 data lanes(usually, dual LVDS link display). Note that this patch supports the LVDS PHY mode only for the i.MX8qxp Mixel combo PHY, i.e., the MIPI DPHY mode is yet to be supported, so for now error would be returned from ->set_mode() if MIPI DPHY mode is passed over to it for the combo PHY.
Cc: Guido Günther agx@sigxcpu.org Cc: Robert Chiras robert.chiras@nxp.com Cc: Kishon Vijay Abraham I kishon@ti.com Cc: Vinod Koul vkoul@kernel.org Cc: Shawn Guo shawnguo@kernel.org Cc: Sascha Hauer s.hauer@pengutronix.de Cc: Pengutronix Kernel Team kernel@pengutronix.de Cc: Fabio Estevam festevam@gmail.com Cc: NXP Linux Team linux-imx@nxp.com Signed-off-by: Liu Ying victor.liu@nxp.com
Guido, I also print invalid PHY mode from mixel_dphy_configure().
v2->v3:
- Improve readability of mixel_dphy_set_mode(). (Guido)
v1->v2:
- Print invalid PHY mode in dmesg. (Guido)
drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c | 269 ++++++++++++++++++++++++- 1 file changed, 258 insertions(+), 11 deletions(-)
diff --git a/drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c b/drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c index a95572b..af1ecda 100644 --- a/drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c +++ b/drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c @@ -4,17 +4,31 @@
- Copyright 2019 Purism SPC
*/
+#include <linux/bitfield.h> #include <linux/clk.h> #include <linux/clk-provider.h> #include <linux/delay.h> +#include <linux/firmware/imx/ipc.h> +#include <linux/firmware/imx/svc/misc.h> #include <linux/io.h> #include <linux/kernel.h> +#include <linux/mfd/syscon.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_platform.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/regmap.h> +#include <dt-bindings/firmware/imx/rsrc.h>
+/* Control and Status Registers(CSR) */ +#define PHY_CTRL 0x00 +#define CCM_MASK GENMASK(7, 5) +#define CCM(n) FIELD_PREP(CCM_MASK, (n)) +#define CA_MASK GENMASK(4, 2) +#define CA(n) FIELD_PREP(CA_MASK, (n)) +#define RFB BIT(1) +#define LVDS_EN BIT(0)
/* DPHY registers */ #define DPHY_PD_DPHY 0x00 @@ -55,8 +69,15 @@ #define PWR_ON 0 #define PWR_OFF 1
+#define MIN_VCO_FREQ 640000000 +#define MAX_VCO_FREQ 1500000000
+#define MIN_LVDS_REFCLK_FREQ 24000000 +#define MAX_LVDS_REFCLK_FREQ 150000000
enum mixel_dphy_devtype { MIXEL_IMX8MQ,
- MIXEL_IMX8QXP,
};
struct mixel_dphy_devdata { @@ -65,6 +86,7 @@ struct mixel_dphy_devdata { u8 reg_rxlprp; u8 reg_rxcdrp; u8 reg_rxhs_settle;
- bool is_combo; /* MIPI DPHY and LVDS PHY combo */
};
static const struct mixel_dphy_devdata mixel_dphy_devdata[] = { @@ -74,6 +96,10 @@ static const struct mixel_dphy_devdata mixel_dphy_devdata[] = { .reg_rxlprp = 0x40, .reg_rxcdrp = 0x44, .reg_rxhs_settle = 0x48,
.is_combo = false,- },
- [MIXEL_IMX8QXP] = {
.is_combo = true,};
@@ -95,8 +121,12 @@ struct mixel_dphy_cfg { struct mixel_dphy_priv { struct mixel_dphy_cfg cfg; struct regmap *regmap;
- struct regmap *lvds_regmap; struct clk *phy_ref_clk; const struct mixel_dphy_devdata *devdata;
- struct imx_sc_ipc *ipc_handle;
- bool is_slave;
- int id;
};
static const struct regmap_config mixel_dphy_regmap_config = { @@ -317,7 +347,8 @@ static int mixel_dphy_set_pll_params(struct phy *phy) return 0; }
-static int mixel_dphy_configure(struct phy *phy, union phy_configure_opts *opts) +static int +mixel_dphy_configure_mipi_dphy(struct phy *phy, union phy_configure_opts *opts) { struct mixel_dphy_priv *priv = phy_get_drvdata(phy); struct mixel_dphy_cfg cfg = { 0 }; @@ -345,15 +376,121 @@ static int mixel_dphy_configure(struct phy *phy, union phy_configure_opts *opts) return 0; }
+static int +mixel_dphy_configure_lvds_phy(struct phy *phy, union phy_configure_opts *opts) +{
- struct mixel_dphy_priv *priv = phy_get_drvdata(phy);
- struct phy_configure_opts_lvds *lvds_opts = &opts->lvds;
- unsigned long data_rate;
- unsigned long fvco;
- u32 rsc;
- u32 co;
- int ret;
- priv->is_slave = lvds_opts->is_slave;
- /* LVDS interface pins */
- regmap_write(priv->lvds_regmap, PHY_CTRL, CCM(0x5) | CA(0x4) | RFB);
- /* enable MODE8 only for slave LVDS PHY */
- rsc = priv->id ? IMX_SC_R_MIPI_1 : IMX_SC_R_MIPI_0;
- ret = imx_sc_misc_set_control(priv->ipc_handle, rsc, IMX_SC_C_DUAL_MODE,
lvds_opts->is_slave);- if (ret) {
dev_err(&phy->dev, "Failed to configure MODE8: %d\n", ret);return ret;- }
- /*
* Choose an appropriate divider ratio to meet the requirement of* PLL VCO frequency range.** ----- 640MHz ~ 1500MHz ------------ ---------------* | VCO | ----------------> | CO divider | -> | LVDS data rate|* ----- FVCO ------------ ---------------* 1/2/4/8 div 7 * differential_clk_rate*/- data_rate = 7 * lvds_opts->differential_clk_rate;
- for (co = 1; co <= 8; co *= 2) {
fvco = data_rate * co;if (fvco >= MIN_VCO_FREQ)break;- }
- if (fvco < MIN_VCO_FREQ || fvco > MAX_VCO_FREQ) {
dev_err(&phy->dev, "VCO frequency %lu is out of range\n", fvco);return -ERANGE;- }
- /*
* CO is configurable, while CN and CM are not,* as fixed ratios 1 and 7 are applied respectively.*/- phy_write(phy, __ffs(co), DPHY_CO);
- /* set reference clock rate */
- clk_set_rate(priv->phy_ref_clk, lvds_opts->differential_clk_rate);
- return ret;
+}
+static int mixel_dphy_configure(struct phy *phy, union phy_configure_opts *opts) +{
- if (phy->attrs.mode == PHY_MODE_MIPI_DPHY)
return mixel_dphy_configure_mipi_dphy(phy, opts);- else if (phy->attrs.mode == PHY_MODE_LVDS)
return mixel_dphy_configure_lvds_phy(phy, opts);- dev_err(&phy->dev,
"Failed to configure PHY with invalid PHY mode: %d\n",phy->attrs.mode);- return -EINVAL;
+}
+static int +mixel_dphy_validate_lvds_phy(struct phy *phy, union phy_configure_opts *opts) +{
- struct phy_configure_opts_lvds *lvds_cfg = &opts->lvds;
- if (lvds_cfg->bits_per_lane_and_dclk_cycle != 7) {
dev_err(&phy->dev, "Invalid bits per LVDS data lane: %u\n",lvds_cfg->bits_per_lane_and_dclk_cycle);return -EINVAL;- }
- if (lvds_cfg->lanes != 4) {
dev_err(&phy->dev, "Invalid LVDS data lanes: %u\n",lvds_cfg->lanes);return -EINVAL;- }
- if (lvds_cfg->differential_clk_rate < MIN_LVDS_REFCLK_FREQ ||
lvds_cfg->differential_clk_rate > MAX_LVDS_REFCLK_FREQ) {dev_err(&phy->dev,"Invalid LVDS differential clock rate: %lu\n",lvds_cfg->differential_clk_rate);return -EINVAL;- }
- return 0;
+}
static int mixel_dphy_validate(struct phy *phy, enum phy_mode mode, int submode, union phy_configure_opts *opts) {
- struct mixel_dphy_cfg cfg = { 0 };
- if (mode == PHY_MODE_MIPI_DPHY) {
struct mixel_dphy_cfg mipi_dphy_cfg = { 0 };
- if (mode != PHY_MODE_MIPI_DPHY)
return -EINVAL;
return mixel_dphy_config_from_opts(phy, &opts->mipi_dphy,&mipi_dphy_cfg);- } else if (mode == PHY_MODE_LVDS) {
return mixel_dphy_validate_lvds_phy(phy, opts);- }
- return mixel_dphy_config_from_opts(phy, &opts->mipi_dphy, &cfg);
- dev_err(&phy->dev,
"Failed to validate PHY with invalid PHY mode: %d\n", mode);- return -EINVAL;
}
static int mixel_dphy_init(struct phy *phy) @@ -373,27 +510,75 @@ static int mixel_dphy_exit(struct phy *phy) return 0; }
-static int mixel_dphy_power_on(struct phy *phy) +static int mixel_dphy_power_on_mipi_dphy(struct phy *phy) { struct mixel_dphy_priv *priv = phy_get_drvdata(phy); u32 locked; int ret;
- ret = clk_prepare_enable(priv->phy_ref_clk);
- if (ret < 0)
return ret;- phy_write(phy, PWR_ON, DPHY_PD_PLL); ret = regmap_read_poll_timeout(priv->regmap, DPHY_LOCK, locked, locked, PLL_LOCK_SLEEP, PLL_LOCK_TIMEOUT); if (ret < 0) { dev_err(&phy->dev, "Could not get DPHY lock (%d)!\n", ret);
goto clock_disable;
return ret;} phy_write(phy, PWR_ON, DPHY_PD_DPHY);
return 0;
+}
+static int mixel_dphy_power_on_lvds_phy(struct phy *phy) +{
- struct mixel_dphy_priv *priv = phy_get_drvdata(phy);
- u32 locked;
- int ret;
- regmap_update_bits(priv->lvds_regmap, PHY_CTRL, LVDS_EN, LVDS_EN);
- phy_write(phy, PWR_ON, DPHY_PD_DPHY);
- phy_write(phy, PWR_ON, DPHY_PD_PLL);
- /* do not wait for slave LVDS PHY being locked */
- if (priv->is_slave)
return 0;- ret = regmap_read_poll_timeout(priv->regmap, DPHY_LOCK, locked,
locked, PLL_LOCK_SLEEP,PLL_LOCK_TIMEOUT);- if (ret < 0) {
dev_err(&phy->dev, "Could not get LVDS PHY lock (%d)!\n", ret);return ret;- }
- return 0;
+}
+static int mixel_dphy_power_on(struct phy *phy) +{
- struct mixel_dphy_priv *priv = phy_get_drvdata(phy);
- int ret;
- ret = clk_prepare_enable(priv->phy_ref_clk);
- if (ret < 0)
return ret;- if (phy->attrs.mode == PHY_MODE_MIPI_DPHY) {
ret = mixel_dphy_power_on_mipi_dphy(phy);- } else if (phy->attrs.mode == PHY_MODE_LVDS) {
ret = mixel_dphy_power_on_lvds_phy(phy);- } else {
dev_err(&phy->dev,"Failed to power on PHY with invalid PHY mode: %d\n",phy->attrs.mode);ret = -EINVAL;- }
- if (ret)
goto clock_disable;- return 0;
clock_disable: clk_disable_unprepare(priv->phy_ref_clk); return ret; @@ -406,16 +591,51 @@ static int mixel_dphy_power_off(struct phy *phy) phy_write(phy, PWR_OFF, DPHY_PD_PLL); phy_write(phy, PWR_OFF, DPHY_PD_DPHY);
if (phy->attrs.mode == PHY_MODE_LVDS)
regmap_update_bits(priv->lvds_regmap, PHY_CTRL, LVDS_EN, 0);clk_disable_unprepare(priv->phy_ref_clk);
return 0;
}
+static int mixel_dphy_set_mode(struct phy *phy, enum phy_mode mode, int submode) +{
- struct mixel_dphy_priv *priv = phy_get_drvdata(phy);
- int ret;
- if (priv->devdata->is_combo && mode != PHY_MODE_LVDS) {
dev_err(&phy->dev, "Failed to set PHY mode for combo PHY\n");return -EINVAL;- }
- if (!priv->devdata->is_combo && mode != PHY_MODE_MIPI_DPHY) {
dev_err(&phy->dev, "Failed to set PHY mode to MIPI DPHY\n");return -EINVAL;- }
- if (priv->devdata->is_combo) {
u32 rsc = priv->id ? IMX_SC_R_MIPI_1 : IMX_SC_R_MIPI_0;ret = imx_sc_misc_set_control(priv->ipc_handle,rsc, IMX_SC_C_MODE,mode == PHY_MODE_LVDS);if (ret) {dev_err(&phy->dev,"Failed to set PHY mode via SCU ipc: %d\n", ret);return ret;}- }
- return 0;
+}
static const struct phy_ops mixel_dphy_phy_ops = { .init = mixel_dphy_init, .exit = mixel_dphy_exit, .power_on = mixel_dphy_power_on, .power_off = mixel_dphy_power_off,
- .set_mode = mixel_dphy_set_mode, .configure = mixel_dphy_configure, .validate = mixel_dphy_validate, .owner = THIS_MODULE,
@@ -424,6 +644,8 @@ static const struct phy_ops mixel_dphy_phy_ops = { static const struct of_device_id mixel_dphy_of_match[] = { { .compatible = "fsl,imx8mq-mipi-dphy", .data = &mixel_dphy_devdata[MIXEL_IMX8MQ] },
- { .compatible = "fsl,imx8qxp-mipi-dphy",
.data = &mixel_dphy_devdata[MIXEL_IMX8QXP] },}; MODULE_DEVICE_TABLE(of, mixel_dphy_of_match); @@ -436,6 +658,7 @@ static int mixel_dphy_probe(struct platform_device *pdev) struct mixel_dphy_priv *priv; struct phy *phy; void __iomem *base;
int ret;
if (!np) return -ENODEV;
@@ -467,6 +690,30 @@ static int mixel_dphy_probe(struct platform_device *pdev) dev_dbg(dev, "phy_ref clock rate: %lu\n", clk_get_rate(priv->phy_ref_clk));
if (priv->devdata->is_combo) {
priv->lvds_regmap =syscon_regmap_lookup_by_phandle(np, "fsl,syscon");if (IS_ERR(priv->lvds_regmap)) {ret = PTR_ERR(priv->lvds_regmap);dev_err_probe(dev, ret, "Failed to get LVDS regmap\n");return ret;}priv->id = of_alias_get_id(np, "mipi_dphy");if (priv->id < 0) {dev_err(dev, "Failed to get phy node alias id: %d\n",priv->id);return priv->id;}ret = imx_scu_get_handle(&priv->ipc_handle);if (ret) {dev_err_probe(dev, ret,"Failed to get SCU ipc handle\n");return ret;}}
dev_set_drvdata(dev, priv);
phy = devm_phy_create(dev, np, &mixel_dphy_phy_ops);
Reviewed-by: Guido Günther agx@sigxcpu.org Cheers, -- Guido
-- 2.7.4
A gentle ping.
Vinod, Kishon, it would be nice if you may help review this.
Thanks, Liu Ying
On Fri, 2020-12-11 at 09:46 +0800, Liu Ying wrote:
Hi,
This series adds i.MX8qxp LVDS PHY mode support for the Mixel PHY in the Freescale i.MX8qxp SoC.
The Mixel PHY is MIPI DPHY + LVDS PHY combo, which can works in either MIPI DPHY mode or LVDS PHY mode. The PHY mode is controlled by i.MX8qxp SCU firmware. The PHY driver would call a SCU function to configure the mode.
The PHY driver is already supporting the Mixel MIPI DPHY in i.MX8mq SoC, where it appears to be a single MIPI DPHY.
Patch 1/5 sets PHY mode in the Northwest Logic MIPI DSI host controller bridge driver, since i.MX8qxp SoC embeds this controller IP to support MIPI DSI displays together with the Mixel PHY.
Patch 2/5 allows LVDS PHYs to be configured through the generic PHY functions and through a custom structure added to the generic PHY configuration union.
Patch 3/5 converts mixel,mipi-dsi-phy plain text dt binding to json-schema.
Patch 4/5 adds dt binding support for the Mixel combo PHY in i.MX8qxp SoC.
Patch 5/5 adds the i.MX8qxp LVDS PHY mode support in the Mixel PHY driver.
Welcome comments, thanks.
v2->v3:
- Improve readability of mixel_dphy_set_mode() in the Mixel PHY driver. (Guido)
- Improve the 'clock-names' property in the PHY dt binding.
v1->v2:
- Convert mixel,mipi-dsi-phy plain text dt binding to json-schema. (Guido)
- Print invalid PHY mode in dmesg from the Mixel PHY driver. (Guido)
- Add Guido's R-b tag on the patch for the nwl-dsi drm bridge driver.
Liu Ying (5): drm/bridge: nwl-dsi: Set PHY mode in nwl_dsi_enable() phy: Add LVDS configuration options dt-bindings: phy: Convert mixel,mipi-dsi-phy to json-schema dt-bindings: phy: mixel: mipi-dsi-phy: Add Mixel combo PHY support for i.MX8qxp phy: freescale: phy-fsl-imx8-mipi-dphy: Add i.MX8qxp LVDS PHY mode support
.../devicetree/bindings/phy/mixel,mipi-dsi-phy.txt | 29 --- .../bindings/phy/mixel,mipi-dsi-phy.yaml | 107 ++++++++ drivers/gpu/drm/bridge/nwl-dsi.c | 6 + drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c | 269 ++++++++++++++++++++- include/linux/phy/phy-lvds.h | 48 ++++ include/linux/phy/phy.h | 4 + 6 files changed, 423 insertions(+), 40 deletions(-) delete mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.txt create mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml create mode 100644 include/linux/phy/phy-lvds.h
Hey Liu,
Looking at this series[1], all but patch#2 has been reviewed, and #2 looks good to me. So I think this series is ready to have v4 re-spun and and all of the r-bs from v3 added to the relevant patches.
[1] https://patchwork.kernel.org/project/dri-devel/cover/1607651182-12307-1-git-...
On Fri, 19 Feb 2021 at 10:22, Liu Ying victor.liu@nxp.com wrote:
A gentle ping.
Vinod, Kishon, it would be nice if you may help review this.
Thanks, Liu Ying
On Fri, 2020-12-11 at 09:46 +0800, Liu Ying wrote:
Hi,
This series adds i.MX8qxp LVDS PHY mode support for the Mixel PHY in the Freescale i.MX8qxp SoC.
The Mixel PHY is MIPI DPHY + LVDS PHY combo, which can works in either MIPI DPHY mode or LVDS PHY mode. The PHY mode is controlled by i.MX8qxp SCU firmware. The PHY driver would call a SCU function to configure the mode.
The PHY driver is already supporting the Mixel MIPI DPHY in i.MX8mq SoC, where it appears to be a single MIPI DPHY.
Patch 1/5 sets PHY mode in the Northwest Logic MIPI DSI host controller bridge driver, since i.MX8qxp SoC embeds this controller IP to support MIPI DSI displays together with the Mixel PHY.
Patch 2/5 allows LVDS PHYs to be configured through the generic PHY functions and through a custom structure added to the generic PHY configuration union.
Patch 3/5 converts mixel,mipi-dsi-phy plain text dt binding to json-schema.
Patch 4/5 adds dt binding support for the Mixel combo PHY in i.MX8qxp SoC.
Patch 5/5 adds the i.MX8qxp LVDS PHY mode support in the Mixel PHY driver.
Welcome comments, thanks.
v2->v3:
- Improve readability of mixel_dphy_set_mode() in the Mixel PHY driver. (Guido)
- Improve the 'clock-names' property in the PHY dt binding.
v1->v2:
- Convert mixel,mipi-dsi-phy plain text dt binding to json-schema. (Guido)
- Print invalid PHY mode in dmesg from the Mixel PHY driver. (Guido)
- Add Guido's R-b tag on the patch for the nwl-dsi drm bridge driver.
Liu Ying (5): drm/bridge: nwl-dsi: Set PHY mode in nwl_dsi_enable() phy: Add LVDS configuration options dt-bindings: phy: Convert mixel,mipi-dsi-phy to json-schema dt-bindings: phy: mixel: mipi-dsi-phy: Add Mixel combo PHY support for i.MX8qxp phy: freescale: phy-fsl-imx8-mipi-dphy: Add i.MX8qxp LVDS PHY mode support
.../devicetree/bindings/phy/mixel,mipi-dsi-phy.txt | 29 --- .../bindings/phy/mixel,mipi-dsi-phy.yaml | 107 ++++++++ drivers/gpu/drm/bridge/nwl-dsi.c | 6 + drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c | 269 ++++++++++++++++++++- include/linux/phy/phy-lvds.h | 48 ++++ include/linux/phy/phy.h | 4 + 6 files changed, 423 insertions(+), 40 deletions(-) delete mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.txt create mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml create mode 100644 include/linux/phy/phy-lvds.h
On Fri, 2021-03-05 at 16:22 +0100, Robert Foss wrote:
Hey Liu,
Looking at this series[1], all but patch#2 has been reviewed, and #2 looks good to me. So I think this series is ready to have v4 re-spun and and all of the r-bs from v3 added to the relevant patches.
Will respin this series soon with all R-b tags added.
Thanks, Liu Ying
[1] https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatchwork....
On Fri, 19 Feb 2021 at 10:22, Liu Ying victor.liu@nxp.com wrote:
A gentle ping.
Vinod, Kishon, it would be nice if you may help review this.
Thanks, Liu Ying
On Fri, 2020-12-11 at 09:46 +0800, Liu Ying wrote:
Hi,
This series adds i.MX8qxp LVDS PHY mode support for the Mixel PHY in the Freescale i.MX8qxp SoC.
The Mixel PHY is MIPI DPHY + LVDS PHY combo, which can works in either MIPI DPHY mode or LVDS PHY mode. The PHY mode is controlled by i.MX8qxp SCU firmware. The PHY driver would call a SCU function to configure the mode.
The PHY driver is already supporting the Mixel MIPI DPHY in i.MX8mq SoC, where it appears to be a single MIPI DPHY.
Patch 1/5 sets PHY mode in the Northwest Logic MIPI DSI host controller bridge driver, since i.MX8qxp SoC embeds this controller IP to support MIPI DSI displays together with the Mixel PHY.
Patch 2/5 allows LVDS PHYs to be configured through the generic PHY functions and through a custom structure added to the generic PHY configuration union.
Patch 3/5 converts mixel,mipi-dsi-phy plain text dt binding to json-schema.
Patch 4/5 adds dt binding support for the Mixel combo PHY in i.MX8qxp SoC.
Patch 5/5 adds the i.MX8qxp LVDS PHY mode support in the Mixel PHY driver.
Welcome comments, thanks.
v2->v3:
- Improve readability of mixel_dphy_set_mode() in the Mixel PHY driver. (Guido)
- Improve the 'clock-names' property in the PHY dt binding.
v1->v2:
- Convert mixel,mipi-dsi-phy plain text dt binding to json-schema. (Guido)
- Print invalid PHY mode in dmesg from the Mixel PHY driver. (Guido)
- Add Guido's R-b tag on the patch for the nwl-dsi drm bridge driver.
Liu Ying (5): drm/bridge: nwl-dsi: Set PHY mode in nwl_dsi_enable() phy: Add LVDS configuration options dt-bindings: phy: Convert mixel,mipi-dsi-phy to json-schema dt-bindings: phy: mixel: mipi-dsi-phy: Add Mixel combo PHY support for i.MX8qxp phy: freescale: phy-fsl-imx8-mipi-dphy: Add i.MX8qxp LVDS PHY mode support
.../devicetree/bindings/phy/mixel,mipi-dsi-phy.txt | 29 --- .../bindings/phy/mixel,mipi-dsi-phy.yaml | 107 ++++++++ drivers/gpu/drm/bridge/nwl-dsi.c | 6 + drivers/phy/freescale/phy-fsl-imx8-mipi-dphy.c | 269 ++++++++++++++++++++- include/linux/phy/phy-lvds.h | 48 ++++ include/linux/phy/phy.h | 4 + 6 files changed, 423 insertions(+), 40 deletions(-) delete mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.txt create mode 100644 Documentation/devicetree/bindings/phy/mixel,mipi-dsi-phy.yaml create mode 100644 include/linux/phy/phy-lvds.h
dri-devel@lists.freedesktop.org
-
Guido Günther -
Liu Ying -
Rob Herring -
Robert Foss