[PATCH] arm64: dts: qcom: enable dual ("bonded") DSI mode for DB845c

[Konrad Dybcio]

On 4.05.2023 19:47, Dmitry Baryshkov wrote:
> On Thu, 4 May 2023 at 20:11, Konrad Dybcio <konrad.dybcio at linaro.org> wrote:
>>
>>
>>
>> On 4.05.2023 18:04, Dmitry Baryshkov wrote:
>>> Now as both lt9611 and drm/msm drivers were updated to handle the 4k
>>> modes over DSI, enable "bonded" DSI mode on DB845c. This way the board
>>> utilizes both DSI links and thus can support 4k on the HDMI output.
>>>
>>> Cc: Amit Pundir <amit.pundir at linaro.org>
>>> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
>>> ---
>> Reviewed-by: Konrad Dybcio <konrad.dybcio at linaro.org>
>>
>> Konrad
>>>  arch/arm64/boot/dts/qcom/sdm845-db845c.dts | 36 ++++++++++++++++++++++
>>>  1 file changed, 36 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
>>> index e14fe9bbb386..4dea2c04b22f 100644
>>> --- a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
>>> +++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
>>> @@ -419,6 +419,9 @@ &dsi0 {
>>>       status = "okay";
>> P.S. wanna move status last by chance?
> 
> Not within this patch, it is not relevant to bonded DSI mode.
Of course.

Konrad
> 
>>
>> Konrad
>>>       vdda-supply = <&vreg_l26a_1p2>;
>>>
>>> +     qcom,dual-dsi-mode;
>>> +     qcom,master-dsi;
>>> +
>>>       ports {
>>>               port at 1 {
>>>                       endpoint {
>>> @@ -434,6 +437,31 @@ &dsi0_phy {
>>>       vdds-supply = <&vreg_l1a_0p875>;
>>>  };
>>>
>>> +&dsi1 {
>>> +     vdda-supply = <&vreg_l26a_1p2>;
>>> +
>>> +     qcom,dual-dsi-mode;
>>> +
>>> +     /* DSI1 is slave, so use DSI0 clocks */
>>> +     assigned-clock-parents = <&dsi0_phy 0>, <&dsi0_phy 1>;
>>> +
>>> +     status = "okay";
>>> +
>>> +     ports {
>>> +             port at 1 {
>>> +                     endpoint {
>>> +                             remote-endpoint = <&lt9611_b>;
>>> +                             data-lanes = <0 1 2 3>;
>>> +                     };
>>> +             };
>>> +     };
>>> +};
>>> +
>>> +&dsi1_phy {
>>> +     vdds-supply = <&vreg_l1a_0p875>;
>>> +     status = "okay";
>>> +};
>>> +
>>>  &gcc {
>>>       protected-clocks = <GCC_QSPI_CORE_CLK>,
>>>                          <GCC_QSPI_CORE_CLK_SRC>,
>>> @@ -493,6 +521,14 @@ lt9611_a: endpoint {
>>>                               };
>>>                       };
>>>
>>> +                     port at 1 {
>>> +                             reg = <1>;
>>> +
>>> +                             lt9611_b: endpoint {
>>> +                                     remote-endpoint = <&dsi1_out>;
>>> +                             };
>>> +                     };
>>> +
>>>                       port at 2 {
>>>                               reg = <2>;
>>>
> 
> 
>