[PATCH RFC v2 00/14] Add support for i.MX MIPI DSI DRM driver

Andy Yan andyshrk at 163.com
Thu Dec 18 22:33:34 PST 2014

Hi Liu Ying:

 I foud Rockchip RK618 (a mfd function device with mipi dsi,lvds transmitter、HDMI TX、and audio codec,and
controlled by the SOC from i2c ) have the same register layout with your i.MX MIPI DSI,which means RK618 MIPI
DSI also have the Synopsys compatible DSI IP。So Would you please make this drives more platform independent?

At 2014-12-18 15:11:22, "Liu Ying" <Ying.Liu at freescale.com> wrote:
>This series addressed almost all comments from Thierry Redding and Russell
>on v1.
>This series adds support for i.MX MIPI DSI DRM driver.
>Currently, the MIPI DSI driver only supports 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 01/15 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 (14):
>  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: 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
>  drm: imx: Add MIPI DSI host controller 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/imx/mipi_dsi.txt       |   78 ++
> .../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                     |   30 +-
> arch/arm/configs/imx_v6_v7_defconfig               |   17 +-
> arch/arm/mach-imx/clk-imx6q.c                      |    1 +
> drivers/clk/clk-divider.c                          |    3 +-
> drivers/gpu/drm/imx/Kconfig                        |    6 +
> drivers/gpu/drm/imx/Makefile                       |    1 +
> drivers/gpu/drm/imx/imx-mipi-dsi.c                 | 1056 ++++++++++++++++++++
> drivers/gpu/drm/panel/Kconfig                      |    5 +
> drivers/gpu/drm/panel/Makefile                     |    1 +
> drivers/gpu/drm/panel/panel-himax-hx8369a.c        |  573 +++++++++++
> include/drm/drm_mipi_dsi.h                         |   14 +
> include/dt-bindings/clock/imx6qdl-clock.h          |    3 +-
> include/linux/mfd/syscon/imx6q-iomuxc-gpr.h        |    1 +
> 18 files changed, 1844 insertions(+), 28 deletions(-)
> 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/imx/imx-mipi-dsi.c
> create mode 100644 drivers/gpu/drm/panel/panel-himax-hx8369a.c
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