Hi,
This series addresses comments from Stefan Wahren on v3 about the device tree documentation part.
The i.MX MIPI DSI is a Synopsys DesignWare MIPI DSI host controller IP. This series adds support for a Synopsys DesignWare MIPI DSI host controller DRM bridge driver and a i.MX MIPI DSI specific DRM driver. Currently, the MIPI DSI drivers only support the burst with sync pulse mode.
This series also includes a DRM panel driver for the Truly TFT480800-16-E panel which is driven by the Himax HX8369A driver IC. The driver IC data sheet could be found at [1]. As mentioned by the data sheet, the driver IC supports several interface modes. Currently, the DRM panel driver only supports the MIPI DSI video mode. New interface modes could be added later(perhaps, just like the way the DRM simple panel driver supports both MIPI DSI interface panels and simple(parallel) interface panels).
The MIPI DSI feature is tested on i.MX6Q SabreSD board and i.MX6DL SabreSD board. The MIPI DSI display could be enabled directly on i.MX6Q SabreSD board after applying this series, because the 26.4MHz pixel clock the panel requires could be derived from the IPU HSP clock(264MHz) with an integer divider. On i.MX6DL SabreSD board, we need to manually disable the LVDS and HDMI displays in the device tree blob, since the i.MX6DL IPU HSP clock is 198MHz at present, which makes the pixel clock share the PLL5 video clock source with the LVDS and HDMI, thus, the panel cannot get the pixel clock rate it wants.
Patch 01/21 is needed to get a precise pixel clock rate(26.4MHz) from the PLL5 video clock. If we don't have this patch, the pixel clock rate is about 20MHz, which causes a horitonal shift on the display image.
This series can be applied on the drm-next branch.
[1] http://www.allshore.com/pdf/Himax_HX8369-A.pdf
Liu Ying (21): clk: divider: Correct parent clk round rate if no bestdiv is normally found of: Add vendor prefix for Himax Technologies Inc. of: Add vendor prefix for Truly Semiconductors Limited ARM: imx6q: Add GPR3 MIPI muxing control register field shift bits definition ARM: imx6q: clk: Add the video_27m clock ARM: imx6q: clk: Change hdmi_isfr clock's parent to be video_27m clock ARM: imx6q: clk: Change hsi_tx clock to be a shared clock gate ARM: imx6q: clk: Add support for mipi_core_cfg clock as a shared clock gate ARM: dts: imx6qdl: Move existing MIPI DSI ports into a new 'ports' node drm/dsi: Add a helper to get bits per pixel of MIPI DSI pixel format Documentation: dt-bindings: Add bindings for Synopsys DW MIPI DSI DRM bridge driver drm/bridge: Add Synopsys DesignWare MIPI DSI host controller driver Documentation: dt-bindings: Add bindings for i.MX specific Synopsys DW MIPI DSI driver drm: imx: Support Synopsys DesignWare MIPI DSI host controller Documentation: dt-bindings: Add bindings for HIMAX HX8369A DRM panel driver drm: panel: Add support for Himax HX8369A MIPI DSI panel ARM: dtsi: imx6qdl: Add support for MIPI DSI host controller ARM: dts: imx6qdl-sabresd: Add support for TRULY TFT480800-16-E MIPI DSI panel ARM: imx_v6_v7_defconfig: Cleanup for imx drm being moved out of staging ARM: imx_v6_v7_defconfig: Add support for MIPI DSI host controller ARM: imx_v6_v7_defconfig: Add support for Himax HX8369A panel
.../devicetree/bindings/drm/bridge/dw_mipi_dsi.txt | 72 ++ .../devicetree/bindings/drm/imx/mipi_dsi.txt | 75 ++ .../devicetree/bindings/panel/himax,hx8369a.txt | 41 + .../devicetree/bindings/vendor-prefixes.txt | 2 + arch/arm/boot/dts/imx6q.dtsi | 20 +- arch/arm/boot/dts/imx6qdl-sabresd.dtsi | 20 + arch/arm/boot/dts/imx6qdl.dtsi | 29 +- arch/arm/configs/imx_v6_v7_defconfig | 17 +- arch/arm/mach-imx/clk-imx6q.c | 7 +- drivers/clk/clk-divider.c | 3 +- drivers/gpu/drm/bridge/Kconfig | 5 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/dw_mipi_dsi.c | 998 +++++++++++++++++++++ drivers/gpu/drm/imx/Kconfig | 7 + drivers/gpu/drm/imx/Makefile | 1 + drivers/gpu/drm/imx/dw_mipi_dsi-imx.c | 226 +++++ drivers/gpu/drm/panel/Kconfig | 5 + drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-himax-hx8369a.c | 573 ++++++++++++ include/drm/bridge/dw_mipi_dsi.h | 27 + include/drm/drm_mipi_dsi.h | 14 + include/dt-bindings/clock/imx6qdl-clock.h | 4 +- include/linux/mfd/syscon/imx6q-iomuxc-gpr.h | 1 + 23 files changed, 2119 insertions(+), 30 deletions(-) create mode 100644 Documentation/devicetree/bindings/drm/bridge/dw_mipi_dsi.txt create mode 100644 Documentation/devicetree/bindings/drm/imx/mipi_dsi.txt create mode 100644 Documentation/devicetree/bindings/panel/himax,hx8369a.txt create mode 100644 drivers/gpu/drm/bridge/dw_mipi_dsi.c create mode 100644 drivers/gpu/drm/imx/dw_mipi_dsi-imx.c create mode 100644 drivers/gpu/drm/panel/panel-himax-hx8369a.c create mode 100644 include/drm/bridge/dw_mipi_dsi.h