The HDMI TX controller on the i.MX8MP SoC is a Synopsys designware IP core with a little bit of SoC integration around it.

Signed-off-by: Lucas Stach l.stach@pengutronix.de --- .../bindings/display/imx/fsl,imx8mp-hdmi.yaml | 72 +++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8mp-hdmi.yaml

diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8mp-hdmi.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8mp-hdmi.yaml new file mode 100644 index 000000000000..578062b6d64d --- /dev/null +++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8mp-hdmi.yaml @@ -0,0 +1,72 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/imx/fsl,imx8mp-hdmi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale i.MX8MP DWC HDMI TX Encoder + +maintainers: + - Lucas Stach l.stach@pengutronix.de + +description: | + The HDMI transmitter is a Synopsys DesignWare HDMI 2.0 TX controller IP. + +allOf: + - $ref: ../bridge/synopsys,dw-hdmi.yaml# + +properties: + compatible: + enum: + - fsl,imx8mp-hdmi + + reg: + maxItems: 1 + + reg-io-width: + const: 1 + + clocks: + maxItems: 4 + + clock-names: + items: + - {} + - {} + - const: cec + - const: pix + + interrupts: + maxItems: 1 + + power-domains: + maxItems: 1 + +required: + - compatible + - reg + - clocks + - clock-names + - interrupts + - power-domains + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/clock/imx8mp-clock.h> + #include <dt-bindings/power/imx8mp-power.h> + + hdmi@32fd8000 { + compatible = "fsl,imx8mp-hdmi"; + reg = <0x32fd8000 0x7eff>; + interrupts = <0 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clk IMX8MP_CLK_HDMI_APB>, + <&clk IMX8MP_CLK_HDMI_REF_266M>, + <&clk IMX8MP_CLK_32K>, + <&hdmi_tx_phy>; + clock-names = "iahb", "isfr", "cec", "pix"; + power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_HDMI_TX>; + reg-io-width = <1>; + };

Add a simple wrapper driver for the DWC HDMI bridge driver that implements the few bits that are necessary to abstract the i.MX8MP SoC integration.

Signed-off-by: Lucas Stach l.stach@pengutronix.de --- drivers/gpu/drm/imx/Kconfig | 1 + drivers/gpu/drm/imx/Makefile | 2 + drivers/gpu/drm/imx/bridge/Kconfig | 10 ++ drivers/gpu/drm/imx/bridge/Makefile | 3 + drivers/gpu/drm/imx/bridge/imx-hdmi.c | 128 ++++++++++++++++++++++++++ 5 files changed, 144 insertions(+) create mode 100644 drivers/gpu/drm/imx/bridge/Kconfig create mode 100644 drivers/gpu/drm/imx/bridge/Makefile create mode 100644 drivers/gpu/drm/imx/bridge/imx-hdmi.c

diff --git a/drivers/gpu/drm/imx/Kconfig b/drivers/gpu/drm/imx/Kconfig index bb9738c7c825..88b054c095c6 100644 --- a/drivers/gpu/drm/imx/Kconfig +++ b/drivers/gpu/drm/imx/Kconfig @@ -42,3 +42,4 @@ config DRM_IMX_HDMI Choose this if you want to use HDMI on i.MX6.

source "drivers/gpu/drm/imx/dcss/Kconfig" +source "drivers/gpu/drm/imx/bridge/Kconfig" diff --git a/drivers/gpu/drm/imx/Makefile b/drivers/gpu/drm/imx/Makefile index b644deffe948..861403d11af6 100644 --- a/drivers/gpu/drm/imx/Makefile +++ b/drivers/gpu/drm/imx/Makefile @@ -10,3 +10,5 @@ obj-$(CONFIG_DRM_IMX_LDB) += imx-ldb.o

obj-$(CONFIG_DRM_IMX_HDMI) += dw_hdmi-imx.o obj-$(CONFIG_DRM_IMX_DCSS) += dcss/ + +obj-y += bridge/ diff --git a/drivers/gpu/drm/imx/bridge/Kconfig b/drivers/gpu/drm/imx/bridge/Kconfig new file mode 100644 index 000000000000..8b02dc5606ba --- /dev/null +++ b/drivers/gpu/drm/imx/bridge/Kconfig @@ -0,0 +1,10 @@ +# SPDX-License-Identifier: GPL-2.0 + +config DRM_IMX_DW_HDMI_BRIDGE + tristate "HDMI encoder support" + depends on (ARCH_MXC && ARM64) || COMPILE_TEST + depends on DRM && OF + select DRM_DW_HDMI + help + Enable support for the internal HDMI encoder on i.MX8MP SoC + diff --git a/drivers/gpu/drm/imx/bridge/Makefile b/drivers/gpu/drm/imx/bridge/Makefile new file mode 100644 index 000000000000..1cfe9623c0d8 --- /dev/null +++ b/drivers/gpu/drm/imx/bridge/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_DRM_IMX_DW_HDMI_BRIDGE) += imx-hdmi.o diff --git a/drivers/gpu/drm/imx/bridge/imx-hdmi.c b/drivers/gpu/drm/imx/bridge/imx-hdmi.c new file mode 100644 index 000000000000..2e72f83be108 --- /dev/null +++ b/drivers/gpu/drm/imx/bridge/imx-hdmi.c @@ -0,0 +1,128 @@ +// SPDX-License-Identifier: GPL-2.0+ + +/* + * Copyright (C) 2022 Pengutronix, Lucas Stach kernel@pengutronix.de + */ + +#include <drm/bridge/dw_hdmi.h> +#include <drm/drm_modes.h> +#include <linux/clk.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/platform_device.h> + +struct imx_hdmi { + struct dw_hdmi_plat_data plat_data; + struct dw_hdmi *dw_hdmi; + struct clk *pixclk; +}; + +static enum drm_mode_status +imx8mp_hdmi_mode_valid(struct dw_hdmi *dw_hdmi, void *data, + const struct drm_display_info *info, + const struct drm_display_mode *mode) +{ + struct imx_hdmi *hdmi = (struct imx_hdmi *)data; + + if (mode->clock < 13500) + return MODE_CLOCK_LOW; + + if (mode->clock > 297000) + return MODE_CLOCK_HIGH; + + if (clk_round_rate(hdmi->pixclk, mode->clock * 1000) != + mode->clock * 1000) + return MODE_CLOCK_RANGE; + + /* We don't support double-clocked and Interlaced modes */ + if ((mode->flags & DRM_MODE_FLAG_DBLCLK) || + (mode->flags & DRM_MODE_FLAG_INTERLACE)) + return MODE_BAD; + + return MODE_OK; +} + +static int imx8mp_hdmi_phy_init(struct dw_hdmi *dw_hdmi, void *data, + const struct drm_display_info *display, + const struct drm_display_mode *mode) +{ + /* + * Just release PHY core from reset, all other power management is done + * by the PHY driver. + */ + dw_hdmi_phy_reset_active_low(dw_hdmi); + + return 0; +} + +static void imx8mp_hdmi_phy_disable(struct dw_hdmi *dw_hdmi, void *data) +{ +} + +static const struct dw_hdmi_phy_ops imx8mp_hdmi_phy_ops = { + .init = imx8mp_hdmi_phy_init, + .disable = imx8mp_hdmi_phy_disable, + .read_hpd = dw_hdmi_phy_read_hpd, + .update_hpd = dw_hdmi_phy_update_hpd, + .setup_hpd = dw_hdmi_phy_setup_hpd, +}; + +static int imx_dw_hdmi_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct dw_hdmi_plat_data *plat_data; + struct imx_hdmi *hdmi; + + hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL); + if (!hdmi) + return -ENOMEM; + + plat_data = &hdmi->plat_data; + + hdmi->pixclk = devm_clk_get(dev, "pix"); + if (IS_ERR(hdmi->pixclk)) + return dev_err_probe(dev, PTR_ERR(hdmi->pixclk), + "Unable to get pixel clock\n"); + + plat_data->mode_valid = imx8mp_hdmi_mode_valid; + plat_data->phy_ops = &imx8mp_hdmi_phy_ops; + plat_data->phy_name = "SAMSUNG HDMI TX PHY"; + plat_data->priv_data = hdmi; + + hdmi->dw_hdmi = dw_hdmi_probe(pdev, plat_data); + if (IS_ERR(hdmi->dw_hdmi)) + return PTR_ERR(hdmi->dw_hdmi); + + platform_set_drvdata(pdev, hdmi); + + return 0; +} + +static int imx_dw_hdmi_remove(struct platform_device *pdev) +{ + struct dw_hdmi *hdmi = platform_get_drvdata(pdev); + + dw_hdmi_remove(hdmi); + + return 0; +} + +static const struct of_device_id imx_dw_hdmi_of_table[] = { + { .compatible = "fsl,imx8mp-hdmi" }, + { /* Sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, imx_dw_hdmi_of_table); + +static struct platform_driver im_dw_hdmi_platform_driver = { + .probe = imx_dw_hdmi_probe, + .remove = imx_dw_hdmi_remove, + .driver = { + .name = "imx-dw-hdmi", + .of_match_table = imx_dw_hdmi_of_table, + }, +}; + +module_platform_driver(im_dw_hdmi_platform_driver); + +MODULE_DESCRIPTION("i.MX8M HDMI encoder driver"); +MODULE_LICENSE("GPL");

Add binding for the i.MX8MP HDMI parallel video interface block.

Signed-off-by: Lucas Stach l.stach@pengutronix.de --- .../display/imx/fsl,imx8mp-hdmi-pvi.yaml | 83 +++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8mp-hdmi-pvi.yaml

diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8mp-hdmi-pvi.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8mp-hdmi-pvi.yaml new file mode 100644 index 000000000000..bf25d29c03ab --- /dev/null +++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8mp-hdmi-pvi.yaml @@ -0,0 +1,83 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/imx/fsl,imx8mp-hdmi-pvi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale i.MX8MP HDMI Parallel Video Interface + +maintainers: + - Lucas Stach l.stach@pengutronix.de + +description: | + The HDMI parallel video interface is timing and sync generator block in the + i.MX8MP SoC, that sits between the video source and the HDMI TX controller. + +properties: + compatible: + enum: + - fsl,imx8mp-hdmi-pvi + + reg: + maxItems: 1 + + power-domains: + maxItems: 1 + + ports: + $ref: /schemas/graph.yaml#/properties/ports + description: | + This device has two video ports. + + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: Input from the LCDIF controller. + + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: Output to the HDMI TX controller + + anyOf: + - required: + - port@0 + - required: + - port@1 + +required: + - compatible + - reg + - power-domains + - ports + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/imx8mp-clock.h> + #include <dt-bindings/power/imx8mp-power.h> + + display-bridge@32fc4000 { + compatible = "fsl,imx8mp-hdmi-pvi"; + reg = <0x32fc4000 0x40>; + power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_PVI>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + pvi_from_lcdif3: endpoint { + remote-endpoint = <&lcdif3_to_pvi>; + }; + }; + + port@1 { + reg = <1>; + pvi_to_hdmi_tx: endpoint { + remote-endpoint = <&hdmi_tx_from_pvi>; + }; + }; + }; + };

This IP block is found in the HDMI subsystem of the i.MX8MP SoC. It has a full timing generator and can switch between different video sources. On the i.MX8MP however the only supported source is the LCDIF. The block just needs to be powered up and told about the polarity of the video sync signals to act in bypass mode.

Signed-off-by: Lucas Stach l.stach@pengutronix.de --- drivers/gpu/drm/imx/bridge/Kconfig | 8 + drivers/gpu/drm/imx/bridge/Makefile | 1 + drivers/gpu/drm/imx/bridge/imx-hdmi-pvi.c | 209 ++++++++++++++++++++++ 3 files changed, 218 insertions(+) create mode 100644 drivers/gpu/drm/imx/bridge/imx-hdmi-pvi.c

diff --git a/drivers/gpu/drm/imx/bridge/Kconfig b/drivers/gpu/drm/imx/bridge/Kconfig index 8b02dc5606ba..486e4b2ad81a 100644 --- a/drivers/gpu/drm/imx/bridge/Kconfig +++ b/drivers/gpu/drm/imx/bridge/Kconfig @@ -8,3 +8,11 @@ config DRM_IMX_DW_HDMI_BRIDGE help Enable support for the internal HDMI encoder on i.MX8MP SoC

+config DRM_IMX_HDMI_PVI + tristate "HDMI encoder support" + depends on (ARCH_MXC && ARM64) || COMPILE_TEST + depends on DRM && OF + help + Enable support for the internal HDMI TX Parallel Video Interface + found on the i.MX8MP SoC. + diff --git a/drivers/gpu/drm/imx/bridge/Makefile b/drivers/gpu/drm/imx/bridge/Makefile index 1cfe9623c0d8..512ea98722b8 100644 --- a/drivers/gpu/drm/imx/bridge/Makefile +++ b/drivers/gpu/drm/imx/bridge/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0

obj-$(CONFIG_DRM_IMX_DW_HDMI_BRIDGE) += imx-hdmi.o +obj-$(CONFIG_DRM_IMX_HDMI_PVI) += imx-hdmi-pvi.o diff --git a/drivers/gpu/drm/imx/bridge/imx-hdmi-pvi.c b/drivers/gpu/drm/imx/bridge/imx-hdmi-pvi.c new file mode 100644 index 000000000000..cdf296858062 --- /dev/null +++ b/drivers/gpu/drm/imx/bridge/imx-hdmi-pvi.c @@ -0,0 +1,209 @@ +// SPDX-License-Identifier: GPL-2.0+ + +/* + * Copyright (C) 2022 Pengutronix, Lucas Stach kernel@pengutronix.de + */ + +#include <drm/drm_atomic_helper.h> +#include <drm/drm_bridge.h> +#include <drm/drm_crtc.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/of_graph.h> +#include <linux/pm_runtime.h> + +#define HTX_PVI_CTL 0x0 +#define PVI_CTL_OP_VSYNC_POL BIT(18) +#define PVI_CTL_OP_HSYNC_POL BIT(17) +#define PVI_CTL_OP_DE_POL BIT(16) +#define PVI_CTL_INP_VSYNC_POL BIT(14) +#define PVI_CTL_INP_HSYNC_POL BIT(13) +#define PVI_CTL_INP_DE_POL BIT(12) +#define PVI_CTL_INPUT_LCDIF BIT(2) +#define PVI_CTL_EN BIT(0) + +struct imx_hdmi_pvi { + struct drm_bridge bridge; + struct device *dev; + struct drm_bridge *next_bridge; + void __iomem *regs; +}; + +static inline struct imx_hdmi_pvi * +to_imx_hdmi_pvi(struct drm_bridge *bridge) +{ + return container_of(bridge, struct imx_hdmi_pvi, bridge); +} + +static int imx_hdmi_pvi_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + struct imx_hdmi_pvi *pvi = to_imx_hdmi_pvi(bridge); + + return drm_bridge_attach(bridge->encoder, pvi->next_bridge, bridge, flags); +} + +static void imx_hdmi_pvi_bridge_enable(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state) +{ + struct drm_atomic_state *state = bridge_state->base.state; + struct imx_hdmi_pvi *pvi = to_imx_hdmi_pvi(bridge); + struct drm_connector_state *conn_state; + const struct drm_display_mode *mode; + struct drm_crtc_state *crtc_state; + struct drm_connector *connector; + u32 bus_flags, val; + + connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder); + if (WARN_ON(!connector)) + return; + + conn_state = drm_atomic_get_new_connector_state(state, connector); + if (WARN_ON(!conn_state)) + return; + + crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc); + if (WARN_ON(!crtc_state)) + return; + + if (WARN_ON(pm_runtime_resume_and_get(pvi->dev))) + return; + + mode = &crtc_state->adjusted_mode; + + val = PVI_CTL_INPUT_LCDIF; + + if (mode->flags & DRM_MODE_FLAG_PVSYNC) + val |= PVI_CTL_OP_VSYNC_POL | PVI_CTL_INP_VSYNC_POL; + + if (mode->flags & DRM_MODE_FLAG_PHSYNC) + val |= PVI_CTL_OP_HSYNC_POL | PVI_CTL_INP_HSYNC_POL; + + if (pvi->next_bridge->timings) + bus_flags = pvi->next_bridge->timings->input_bus_flags; + else if (bridge_state) + bus_flags = bridge_state->input_bus_cfg.flags; + + if (bus_flags & DRM_BUS_FLAG_DE_HIGH) + val |= PVI_CTL_OP_DE_POL | PVI_CTL_INP_DE_POL; + + writel(val, pvi->regs + HTX_PVI_CTL); + val |= PVI_CTL_EN; + writel(val, pvi->regs + HTX_PVI_CTL); +} + +static void imx_hdmi_pvi_bridge_disable(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state) +{ + struct imx_hdmi_pvi *pvi = to_imx_hdmi_pvi(bridge); + + writel(0x0, pvi->regs + HTX_PVI_CTL); + + pm_runtime_put(pvi->dev); +} + +static u32 *pvi_bridge_get_input_bus_fmts(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + u32 output_fmt, + unsigned int *num_input_fmts) +{ + struct imx_hdmi_pvi *pvi = to_imx_hdmi_pvi(bridge); + struct drm_bridge *next_bridge = pvi->next_bridge; + struct drm_bridge_state *next_state; + + if (!next_bridge->funcs->atomic_get_input_bus_fmts) + return 0; + + next_state = drm_atomic_get_new_bridge_state(crtc_state->state, + next_bridge); + + return next_bridge->funcs->atomic_get_input_bus_fmts(next_bridge, + next_state, + crtc_state, + conn_state, + output_fmt, + num_input_fmts); +} + +static const struct drm_bridge_funcs imx_hdmi_pvi_bridge_funcs = { + .attach = imx_hdmi_pvi_bridge_attach, + .atomic_enable = imx_hdmi_pvi_bridge_enable, + .atomic_disable = imx_hdmi_pvi_bridge_disable, + .atomic_get_input_bus_fmts = pvi_bridge_get_input_bus_fmts, + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_reset = drm_atomic_helper_bridge_reset, +}; + +static int imx_hdmi_pvi_probe(struct platform_device *pdev) +{ + struct device_node *remote; + struct imx_hdmi_pvi *pvi; + + pvi = devm_kzalloc(&pdev->dev, sizeof(*pvi), GFP_KERNEL); + if (!pvi) + return -ENOMEM; + + platform_set_drvdata(pdev, pvi); + pvi->dev = &pdev->dev; + + pvi->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(pvi->regs)) + return PTR_ERR(pvi->regs); + + /* Get the next bridge in the pipeline. */ + remote = of_graph_get_remote_node(pdev->dev.of_node, 1, -1); + if (!remote) + return -EINVAL; + + pvi->next_bridge = of_drm_find_bridge(remote); + of_node_put(remote); + + if (!pvi->next_bridge) + return dev_err_probe(&pdev->dev, -EPROBE_DEFER, + "could not find next bridge\n"); + + /* Register the bridge. */ + pvi->bridge.funcs = &imx_hdmi_pvi_bridge_funcs; + pvi->bridge.of_node = pdev->dev.of_node; + pvi->bridge.timings = pvi->next_bridge->timings; + + drm_bridge_add(&pvi->bridge); + + pm_runtime_enable(&pdev->dev); + + return 0; +} + +static int imx_hdmi_pvi_remove(struct platform_device *pdev) +{ + struct imx_hdmi_pvi *pvi = platform_get_drvdata(pdev); + + drm_bridge_remove(&pvi->bridge); + + return 0; +} + +static const struct of_device_id imx_hdmi_pvi_match[] = { + { + .compatible = "fsl,imx8mp-hdmi-pvi", + }, { + /* sentinel */ + }, +}; +MODULE_DEVICE_TABLE(of, imx_hdmi_pvi_match); + +static struct platform_driver imx_hdmi_pvi_driver = { + .probe = imx_hdmi_pvi_probe, + .remove = imx_hdmi_pvi_remove, + .driver = { + .name = "imx-hdmi-pvi", + .of_match_table = imx_hdmi_pvi_match, + }, +}; +module_platform_driver(imx_hdmi_pvi_driver); + +MODULE_DESCRIPTION("i.MX8MP HDMI TX Parallel Video Interface bridge driver"); +MODULE_LICENSE("GPL");

Add a DT binding for the HDMI PHY found on the i.MX8MP SoC.

Signed-off-by: Lucas Stach l.stach@pengutronix.de --- .../bindings/phy/fsl,imx8mp-hdmi-phy.yaml | 62 +++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/fsl,imx8mp-hdmi-phy.yaml

diff --git a/Documentation/devicetree/bindings/phy/fsl,imx8mp-hdmi-phy.yaml b/Documentation/devicetree/bindings/phy/fsl,imx8mp-hdmi-phy.yaml new file mode 100644 index 000000000000..bc21c073e92a --- /dev/null +++ b/Documentation/devicetree/bindings/phy/fsl,imx8mp-hdmi-phy.yaml @@ -0,0 +1,62 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/fsl,imx8mp-hdmi-phy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale i.MX8MP HDMI PHY binding + +maintainers: + - Lucas Stach l.stach@pengutronix.de + +properties: + compatible: + enum: + - fsl,imx8mp-hdmi-phy + + reg: + maxItems: 1 + + "#clock-cells": + const: 0 + + clocks: + minItems: 2 + maxItems: 2 + + clock-names: + items: + - const: apb + - const: ref + + "#phy-cells": + const: 0 + + power-domains: + maxItems: 1 + +required: + - compatible + - reg + - "#clock-cells" + - clocks + - clock-names + - power-domains + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/imx8mp-clock.h> + #include <dt-bindings/power/imx8mp-power.h> + + phy@32fdff00 { + compatible = "fsl,imx8mp-hdmi-phy"; + reg = <0x32fdff00 0x100>; + clocks = <&clk IMX8MP_CLK_HDMI_APB>, + <&clk IMX8MP_CLK_HDMI_24M>; + clock-names = "apb", "ref"; + power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_HDMI_TX_PHY>; + #clock-cells = <0>; + #phy-cells = <0>; + };

This adds the driver for the Samsung HDMI PHY found on the i.MX8MP SoC.

Heavily based on the PHY implementation in the downstream kernel written by Sandor Yu Sandor.yu@nxp.com, but also cleaned up quite a bit and extended to support runtime PM.

Signed-off-by: Lucas Stach l.stach@pengutronix.de --- FIXME: The PHY configuration could be cleaned up further, it currently has a lot of register writes that are same across all supported modes. --- drivers/phy/freescale/Kconfig | 7 + drivers/phy/freescale/Makefile | 1 + drivers/phy/freescale/phy-fsl-samsung-hdmi.c | 1145 ++++++++++++++++++ 3 files changed, 1153 insertions(+) create mode 100644 drivers/phy/freescale/phy-fsl-samsung-hdmi.c

diff --git a/drivers/phy/freescale/Kconfig b/drivers/phy/freescale/Kconfig index f9c54cd02036..f80c92eb7c55 100644 --- a/drivers/phy/freescale/Kconfig +++ b/drivers/phy/freescale/Kconfig @@ -26,6 +26,13 @@ config PHY_FSL_IMX8M_PCIE Enable this to add support for the PCIE PHY as found on i.MX8M family of SOCs.

+config PHY_FSL_SAMSUNG_HDMI_PHY + tristate "Samsung HDMI PHY support" + depends on OF && HAS_IOMEM + select GENERIC_PHY + help + Enable this to add support for the Samsung HDMI PHY in i.MX8MP. + endif

config PHY_FSL_LYNX_28G diff --git a/drivers/phy/freescale/Makefile b/drivers/phy/freescale/Makefile index 3518d5dbe8a7..46a26929376d 100644 --- a/drivers/phy/freescale/Makefile +++ b/drivers/phy/freescale/Makefile @@ -2,4 +2,5 @@ obj-$(CONFIG_PHY_FSL_IMX8MQ_USB) += phy-fsl-imx8mq-usb.o obj-$(CONFIG_PHY_MIXEL_MIPI_DPHY) += phy-fsl-imx8-mipi-dphy.o obj-$(CONFIG_PHY_FSL_IMX8M_PCIE) += phy-fsl-imx8m-pcie.o +obj-$(CONFIG_PHY_FSL_SAMSUNG_HDMI_PHY) += phy-fsl-samsung-hdmi.o obj-$(CONFIG_PHY_FSL_LYNX_28G) += phy-fsl-lynx-28g.o diff --git a/drivers/phy/freescale/phy-fsl-samsung-hdmi.c b/drivers/phy/freescale/phy-fsl-samsung-hdmi.c new file mode 100644 index 000000000000..70317a7fb845 --- /dev/null +++ b/drivers/phy/freescale/phy-fsl-samsung-hdmi.c @@ -0,0 +1,1145 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2020 NXP + * Copyright 2022 Pengutronix, Lucas Stach kernel@pengutronix.de + */ + +#include <linux/clk-provider.h> +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/iopoll.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> + +#define HDMI_TX_CONTROL0 0x200 +#define HDMI_TX_CONTROL_PHY_PWRDWN BIT(3) + +#define PHY_REG_33 0x84 +#define REG33_MODE_SET_DONE BIT(7) +#define REG33_FIX_DA BIT(1) + +#define PHY_REG_34 0x88 +#define REG34_PHY_READY BIT(7) +#define REG34_PLL_LOCK BIT(6) +#define REG34_PHY_CLK_READY BIT(5) + + +#define PHY_PLL_REGS_NUM 48 + +struct phy_config { + u32 clk_rate; + u8 regs[PHY_PLL_REGS_NUM]; +}; + +const struct phy_config phy_pll_cfg[] = { + { 22250000, { + 0x00, 0xD1, 0x4B, 0xF1, 0x89, 0x88, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0x15, 0x25, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8F, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 23750000, { + 0x00, 0xD1, 0x50, 0xF1, 0x86, 0x85, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0x03, 0x25, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8F, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + },{ + 24000000, { + 0x00, 0xD1, 0x50, 0xF0, 0x00, 0x00, 0x80, 0x00, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0x01, 0x25, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8F, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + },{ + 24024000, { + 0x00, 0xD1, 0x50, 0xF1, 0x99, 0x02, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0x00, 0x25, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8F, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 25175000, { + 0x00, 0xD1, 0x54, 0xFC, 0xCC, 0x91, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0xF5, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8F, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 25200000, { + 0x00, 0xD1, 0x54, 0xF0, 0x00, 0x00, 0x80, 0x00, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0xF4, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8F, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 26750000, { + 0x00, 0xD1, 0x5A, 0xF2, 0x89, 0x88, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0xE6, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8F, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 27000000, { + 0x00, 0xD1, 0x5A, 0xF0, 0x00, 0x00, 0x80, 0x00, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0xE4, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8F, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 27027000, { + 0x00, 0xD1, 0x5A, 0xF2, 0xFD, 0x0C, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0xE4, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8F, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 29500000, { + 0x00, 0xD1, 0x62, 0xF4, 0x95, 0x08, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0xD1, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8F, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 30750000, { + 0x00, 0xD1, 0x66, 0xF4, 0x82, 0x01, 0x88, 0x45, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0xC8, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8F, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 30888000, { + 0x00, 0xD1, 0x66, 0xF4, 0x99, 0x18, 0x88, 0x45, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0xC7, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8F, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 33750000, { + 0x00, 0xD1, 0x70, 0xF4, 0x82, 0x01, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0xB7, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8F, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 35000000, { + 0x00, 0xD1, 0x58, 0xB8, 0x8B, 0x88, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0xB0, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8B, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 36000000, { + 0x00, 0xD1, 0x5A, 0xB0, 0x00, 0x00, 0x80, 0x00, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0xAB, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8B, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 36036000, { + 0x00, 0xD1, 0x5A, 0xB2, 0xFD, 0x0C, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0xAB, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8B, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 40000000, { + 0x00, 0xD1, 0x64, 0xB0, 0x00, 0x00, 0x80, 0x00, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0x9A, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x8B, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 43200000, { + 0x00, 0xD1, 0x5A, 0x90, 0x00, 0x00, 0x80, 0x00, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0x8F, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x89, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 43243200, { + 0x00, 0xD1, 0x5A, 0x92, 0xFD, 0x0C, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0x8F, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x89, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 44500000, { + 0x00, 0xD1, 0x5C, 0x92, 0x98, 0x11, 0x84, 0x41, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0x8B, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x89, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 47000000, { + 0x00, 0xD1, 0x62, 0x94, 0x95, 0x82, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0x83, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x89, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 47500000, { + 0x00, 0xD1, 0x63, 0x96, 0xA1, 0x82, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x00, 0x82, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x89, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 50349650, { + 0x00, 0xD1, 0x54, 0x7C, 0xC3, 0x8F, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x10, 0xF5, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x87, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 50400000, { + 0x00, 0xD1, 0x54, 0x70, 0x00, 0x00, 0x80, 0x00, + 0x4F, 0x30, 0x33, 0x65, 0x10, 0xF4, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x87, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 53250000, { + 0x00, 0xD1, 0x58, 0x72, 0x84, 0x03, 0x82, 0x41, + 0x4F, 0x30, 0x33, 0x65, 0x10, 0xE7, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x87, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 53500000, { + 0x00, 0xD1, 0x5A, 0x72, 0x89, 0x88, 0x80, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x10, 0xE6, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x87, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 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0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 288000000, { + 0x00, 0xD1, 0x78, 0x10, 0x00, 0x00, 0x80, 0x00, + 0x4F, 0x30, 0x33, 0x65, 0x30, 0xAB, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x81, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 297000000, { + 0x00, 0xD1, 0x7B, 0x15, 0x84, 0x03, 0x90, 0x45, + 0x4F, 0x30, 0x33, 0x65, 0x30, 0xA6, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x81, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 165000000, { + 0x00, 0xD1, 0x45, 0x11, 0x84, 0x81, 0x90, 0x4B, + 0x4F, 0x30, 0x33, 0x65, 0x20, 0x95, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x81, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 185625000, { + 0x00, 0xD1, 0x4E, 0x12, 0xB4, 0x95, 0x88, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x20, 0x85, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x81, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 198000000, { + 0x00, 0xD1, 0x52, 0x12, 0x84, 0x01, 0x88, 0x47, + 0x4F, 0x30, 0x33, 0x65, 0x20, 0x7D, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x81, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 90000000, { + 0x00, 0xD1, 0x4B, 0x32, 0x84, 0x00, 0x88, 0x40, + 0x4F, 0x30, 0x33, 0x65, 0x10, 0x89, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x83, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { + 99000000, { + 0x00, 0xD1, 0x52, 0x32, 0x84, 0x01, 0x88, 0x47, + 0x4F, 0x30, 0x33, 0x65, 0x10, 0x7D, 0x24, 0x80, + 0x6C, 0xF2, 0x67, 0x00, 0x10, 0x83, 0x30, 0x32, + 0x60, 0x8F, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xE0, 0x83, 0x0F, 0x3E, 0xF8, 0x00, 0x00, + }, + }, { /* sentinel */ }, +}; + + +struct fsl_samsung_hdmi_phy { + struct device *dev; + void __iomem *regs; + struct clk *apbclk; + struct clk *refclk; + + /* clk provider */ + struct clk_hw hw; + const struct phy_config *cur_cfg; +}; + +static inline struct fsl_samsung_hdmi_phy * +to_fsl_samsung_hdmi_phy(struct clk_hw *hw) +{ + return container_of(hw, struct fsl_samsung_hdmi_phy, hw); +} + +static void fsl_samsung_hdmi_phy_configure(struct fsl_samsung_hdmi_phy *phy, + const struct phy_config *cfg) +{ + int i; + + /* HDMI PHY init */ + writeb(REG33_FIX_DA, phy->regs + PHY_REG_33); + + for (i = 0; i < PHY_PLL_REGS_NUM; i++) + writeb(cfg->regs[i], phy->regs + i * 4); + + writeb(REG33_FIX_DA | REG33_MODE_SET_DONE , phy->regs + PHY_REG_33); +} + +static int phy_clk_prepare(struct clk_hw *hw) +{ + struct fsl_samsung_hdmi_phy *phy = to_fsl_samsung_hdmi_phy(hw); + int ret = 0; + u8 val; + + return 0; + ret = readb_poll_timeout(phy->regs + PHY_REG_34, val, + val & REG34_PLL_LOCK, + 20, 20000); + if (ret) + dev_err(phy->dev, "PLL failed to lock\n"); + + return ret; +} + +static unsigned long phy_clk_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct fsl_samsung_hdmi_phy *phy = to_fsl_samsung_hdmi_phy(hw); + + if (!phy->cur_cfg) + return 0; + + return phy->cur_cfg->clk_rate; +} + +static long phy_clk_round_rate(struct clk_hw *hw, + unsigned long rate, unsigned long *parent_rate) +{ + const struct phy_config *phy_cfg = phy_pll_cfg; + + for (; phy_cfg->clk_rate != 0; phy_cfg++) + if (phy_cfg->clk_rate == rate) + break; + + if (phy_cfg->clk_rate == 0) + return -EINVAL; + + return phy_cfg->clk_rate; +} + +static int phy_clk_set_rate(struct clk_hw *hw, + unsigned long rate, unsigned long parent_rate) +{ + struct fsl_samsung_hdmi_phy *phy = to_fsl_samsung_hdmi_phy(hw); + const struct phy_config *phy_cfg = phy_pll_cfg; + int ret = 0; + u8 val; + + for (; phy_cfg->clk_rate != 0; phy_cfg++) + if (phy_cfg->clk_rate == rate) + break; + + if (phy_cfg->clk_rate == 0) + return -EINVAL; + + phy->cur_cfg = phy_cfg; + + fsl_samsung_hdmi_phy_configure(phy, phy_cfg); + + ret = readb_poll_timeout(phy->regs + PHY_REG_34, val, + val & REG34_PLL_LOCK, + 50, 20000); + if (ret) + dev_err(phy->dev, "PLL failed to lock\n"); + + return ret; +} + +static const struct clk_ops phy_clk_ops = { + .prepare = phy_clk_prepare, + .recalc_rate = phy_clk_recalc_rate, + .round_rate = phy_clk_round_rate, + .set_rate = phy_clk_set_rate, +}; + +static int phy_clk_register(struct fsl_samsung_hdmi_phy *phy) +{ + struct device *dev = phy->dev; + struct device_node *np = dev->of_node; + struct clk_init_data init; + const char *parent_name; + struct clk *phyclk; + int ret; + + parent_name = __clk_get_name(phy->refclk); + + init.parent_names = &parent_name; + init.num_parents = 1; + init.flags = 0; + init.name = "hdmi_pclk"; + init.ops = &phy_clk_ops; + + phy->hw.init = &init; + + phyclk = devm_clk_register(dev, &phy->hw); + if (IS_ERR(phyclk)) + return dev_err_probe(dev, PTR_ERR(phyclk), + "failed to register clock\n"); + + ret = of_clk_add_provider(np, of_clk_src_simple_get, phyclk); + if (ret) + return dev_err_probe(dev, ret, + "failed to register clock provider\n"); + + return 0; +} + +static int fsl_samsung_hdmi_phy_probe(struct platform_device *pdev) +{ + struct fsl_samsung_hdmi_phy *phy; + int ret; + + phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL); + if (!phy) + return -ENOMEM; + + platform_set_drvdata(pdev, phy); + phy->dev = &pdev->dev; + + phy->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(phy->regs)) + return PTR_ERR(phy->regs); + + phy->apbclk = devm_clk_get(phy->dev, "apb"); + if (IS_ERR(phy->apbclk)) + return dev_err_probe(phy->dev, PTR_ERR(phy->apbclk), + "failed to get apb clk\n"); + + phy->refclk = devm_clk_get(phy->dev, "ref"); + if (IS_ERR(phy->refclk)) + return dev_err_probe(phy->dev, PTR_ERR(phy->refclk), + "failed to get ref clk\n"); + + ret = clk_prepare_enable(phy->apbclk); + if (ret) { + dev_err(phy->dev, "failed to enable apbclk\n"); + return ret; + } + + pm_runtime_get_noresume(phy->dev); + pm_runtime_set_active(phy->dev); + pm_runtime_enable(phy->dev); + + ret = phy_clk_register(phy); + if (ret) { + dev_err(&pdev->dev, "register clk failed\n"); + goto register_clk_failed; + } + + pm_runtime_put(phy->dev); + + return 0; + +register_clk_failed: + clk_disable_unprepare(phy->apbclk); + + return ret; +} + +static int fsl_samsung_hdmi_phy_remove(struct platform_device *pdev) +{ + of_clk_del_provider(pdev->dev.of_node); + + return 0; +} + +#ifdef CONFIG_PM +static int fsl_samsung_hdmi_phy_suspend(struct device *dev) +{ + struct fsl_samsung_hdmi_phy *phy = dev_get_drvdata(dev); + + clk_disable_unprepare(phy->apbclk); + + return 0; +} + +static int fsl_samsung_hdmi_phy_resume(struct device *dev) +{ + struct fsl_samsung_hdmi_phy *phy = dev_get_drvdata(dev); + int ret; + + ret = clk_prepare_enable(phy->apbclk); + if (ret) { + dev_err(phy->dev, "failed to enable apbclk\n"); + return ret; + } + + if (phy->cur_cfg) + fsl_samsung_hdmi_phy_configure(phy, phy->cur_cfg); + + return 0; + +} +#endif + +static const struct dev_pm_ops fsl_samsung_hdmi_phy_pm_ops = { + SET_RUNTIME_PM_OPS(fsl_samsung_hdmi_phy_suspend, + fsl_samsung_hdmi_phy_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) +}; + +static const struct of_device_id fsl_samsung_hdmi_phy_of_match[] = { + { + .compatible = "fsl,imx8mp-hdmi-phy", + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(of, fsl_samsung_hdmi_phy_of_match); + +static struct platform_driver fsl_samsung_hdmi_phy_driver = { + .probe = fsl_samsung_hdmi_phy_probe, + .remove = fsl_samsung_hdmi_phy_remove, + .driver = { + .name = "fsl-samsung-hdmi-phy", + .of_match_table = fsl_samsung_hdmi_phy_of_match, + .pm = &fsl_samsung_hdmi_phy_pm_ops, + }, +}; +module_platform_driver(fsl_samsung_hdmi_phy_driver); + +MODULE_AUTHOR("Sandor Yu Sandor.yu@nxp.com"); +MODULE_DESCRIPTION("SAMSUNG HDMI 2.0 Transmitter PHY Driver"); +MODULE_LICENSE("GPL v2");

This adds the DT nodes for all the peripherals that make up the HDMI display pipeline.

Signed-off-by: Lucas Stach l.stach@pengutronix.de --- arch/arm64/boot/dts/freescale/imx8mp.dtsi | 80 +++++++++++++++++++++++ 1 file changed, 80 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi index 6b7b5ba32b48..a41da99e9537 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi @@ -1087,6 +1087,86 @@ irqsteer_hdmi: interrupt-controller@32fc2000 { clock-names = "ipg"; power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_IRQSTEER>; }; + + hdmi_pvi: display-bridge@32fc4000 { + compatible = "fsl,imx8mp-hdmi-pvi"; + reg = <0x32fc4000 0x40>; + power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_PVI>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + pvi_from_lcdif3: endpoint { + remote-endpoint = <&lcdif3_to_pvi>; + }; + }; + + port@1 { + reg = <1>; + pvi_to_hdmi_tx: endpoint { + remote-endpoint = <&hdmi_tx_from_pvi>; + }; + }; + }; + }; + + lcdif3: display-controller@32fc6000 { + compatible = "fsl,imx8mp-lcdif"; + reg = <0x32fc6000 0x238>; + interrupts = <8 IRQ_TYPE_LEVEL_HIGH>; + interrupt-parent = <&irqsteer_hdmi>; + clocks = <&hdmi_tx_phy>, + <&clk IMX8MP_CLK_HDMI_APB>, + <&clk IMX8MP_CLK_HDMI_ROOT>; + clock-names = "pix", "axi", "disp_axi"; + power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_LCDIF>; + + port { + lcdif3_to_pvi: endpoint { + remote-endpoint = <&pvi_from_lcdif3>; + }; + }; + }; + + hdmi_tx: hdmi@32fd8000 { + compatible = "fsl,imx8mp-hdmi"; + reg = <0x32fd8000 0x7eff>; + interrupts = <0 IRQ_TYPE_LEVEL_HIGH>; + interrupt-parent = <&irqsteer_hdmi>; + clocks = <&clk IMX8MP_CLK_HDMI_APB>, + <&clk IMX8MP_CLK_HDMI_REF_266M>, + <&clk IMX8MP_CLK_32K>, + <&hdmi_tx_phy>; + clock-names = "iahb", "isfr", "cec", "pix"; + assigned-clocks = <&clk IMX8MP_CLK_HDMI_REF_266M>; + assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_266M>; + power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_HDMI_TX>; + reg-io-width = <1>; + status = "disabled"; + + port { + hdmi_tx_from_pvi: endpoint { + remote-endpoint = <&pvi_to_hdmi_tx>; + }; + }; + }; + + hdmi_tx_phy: phy@32fdff00 { + compatible = "fsl,imx8mp-hdmi-phy"; + reg = <0x32fdff00 0x100>; + clocks = <&clk IMX8MP_CLK_HDMI_APB>, + <&clk IMX8MP_CLK_HDMI_24M>; + clock-names = "apb", "ref"; + assigned-clocks = <&clk IMX8MP_CLK_HDMI_24M>; + assigned-clock-parents = <&clk IMX8MP_CLK_24M>; + power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_HDMI_TX_PHY>; + #clock-cells = <0>; + #phy-cells = <0>; + status = "disabled"; + }; };

gpu3d: gpu@38000000 {

Enable the DT nodes for HDMI TX and PHY and add the pinctrl for the few involved pins that are configurable.

Signed-off-by: Lucas Stach l.stach@pengutronix.de --- arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts index 4c3ac4214a2c..fdf851865ba9 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts @@ -197,6 +197,16 @@ ethphy1: ethernet-phy@1 { }; };

+&hdmi_tx { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_hdmi>; + status = "okay"; +}; + +&hdmi_tx_phy { + status = "okay"; +}; + &i2c1 { clock-frequency = <400000>; pinctrl-names = "default"; @@ -465,6 +475,15 @@ MX8MP_IOMUXC_NAND_READY_B__GPIO3_IO16 0x19 >; };

+ pinctrl_hdmi: hdmigrp { + fsl,pins = < + MX8MP_IOMUXC_HDMI_DDC_SCL__HDMIMIX_HDMI_SCL 0x1c3 + MX8MP_IOMUXC_HDMI_DDC_SDA__HDMIMIX_HDMI_SDA 0x1c3 + MX8MP_IOMUXC_HDMI_HPD__HDMIMIX_HDMI_HPD 0x19 + MX8MP_IOMUXC_HDMI_CEC__HDMIMIX_HDMI_CEC 0x19 + >; + }; + pinctrl_i2c1: i2c1grp { fsl,pins = < MX8MP_IOMUXC_I2C1_SCL__I2C1_SCL 0x400001c3