Hi,
in short: this patch is "CANCELLED" : )
There is no need to add the pixel clock as a mandatory property because
now the clock value is ajusted in adjusted_mode.
Please have a look to patches:
- drm/stm: ltdc: use crtc_mode_fixup to update adjusted_mode clock
- drm/bridge/synopsys: dsi: use adjusted_mode in mode_set
Hope it is better, comments are welcome
Many thanks,
Philippe :-)
On 01/22/2018 04:38 PM, Philippe Cornu wrote:
> Add the DPI/RGB input pixel clock in mandatory properties
> because it really offers a better preciseness for timing
> computations.
>
> Signed-off-by: Philippe Cornu <philippe.cornu@xxxxxx>
> ---
> Please apply "dt-bindings: display: stm32: correct clock-names
> in dsi panel example" before this patch.
>
> Changes in v3: remove the note regarding swapped clock names
> (now in a separate patch).
> Changes in v2: put new clock in last position (Rob Herring)
>
> Documentation/devicetree/bindings/display/st,stm32-ltdc.txt | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt b/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt
> index 3eb1b48b47dd..942b7237ae87 100644
> --- a/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt
> +++ b/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt
> @@ -29,6 +29,7 @@ Mandatory properties specific to STM32 DSI:
> - compatible: "st,stm32-dsi".
> - clock-names:
> - phy pll reference clock string name, must be "ref".
> + - DPI/RGB input pixel clock string name, must be "px_clk".
> - resets: see [5].
> - reset-names: see [5].
>
> @@ -97,8 +98,9 @@ Example 2: DSI panel
> #size-cells = <0>;
> compatible = "st,stm32-dsi";
> reg = <0x40016c00 0x800>;
> - clocks = <&rcc 1 CLK_F469_DSI>, <&clk_hse>;
> - clock-names = "pclk", "ref";
> + clocks = <&rcc 1 CLK_F469_DSI>, <&clk_hse>,
> + <&rcc 1 CLK_LCD>;
> + clock-names = "pclk", "ref", "px_clk";
> resets = <&rcc STM32F4_APB2_RESET(DSI)>;
> reset-names = "apb";
>
> ��.n��������+%������w��{.n����z�{��ܨ}���Ơz�j:+v�����w����ޙ��&�)ߡ�a����z�ޗ���ݢj��w�f
