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

Liu Ying Ying.Liu at freescale.com
Thu Dec 18 23:46:23 PST 2014

Hi Andy,

On 12/19/2014 02:33 PM, Andy Yan wrote:
> 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?

I may try to place the Synopsys DesignWare MIPI DSI driver in the
drm/bridge directory and make it as less platform-dependant as

I have no access to the Rockchip RK618 chip and it's reference menu.
You probably may add the Rockchip part support later.

Liu Ying

> 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
>>dri-devel mailing list
>>dri-devel at lists.freedesktop.org

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