linux-kernel - Re: [PATCH v6] arm64: dts: qcom: sc7180: Add Display Port dt node

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Message-ID: <13f4d59cf655287632a281ab7538e5bd@codeaurora.org>
Date:   Mon, 17 Aug 2020 20:30:41 -0700
From:   Tanmay Shah <tanmay@...eaurora.org>
To:     Stephen Boyd <swboyd@...omium.org>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, seanpaul@...omium.org,
        robdclark@...il.com, daniel@...ll.ch, airlied@...ux.ie,
        aravindh@...eaurora.org, abhinavk@...eaurora.org,
        khsieh@...eaurora.org
Subject: Re: [PATCH v6] arm64: dts: qcom: sc7180: Add Display Port dt node

On 2020-08-17 17:24, Stephen Boyd wrote:
> Quoting Tanmay Shah (2020-08-17 15:53:00)
>> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi 
>> b/arch/arm64/boot/dts/qcom/sc7180.dtsi
>> index 31b9217bb5bf..bf2f2bb1aa79 100644
>> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
>> @@ -2440,6 +2447,71 @@ dsi_phy: dsi-phy@...4400 {
>> 
>>                                 status = "disabled";
>>                         };
>> +
>> +                       msm_dp: displayport-controller@...0000 {
> 
> This should come before dsi-phy and dsi node. It should be sorted by 
> the
> address (0xae90000).
> 
>> +                               status = "disabled";
>> +                               compatible = "qcom,sc7180-dp";
>> +
>> +                               reg = <0 0x0ae90000 0 0x1400>;
>> +
>> +                               interrupt-parent = <&mdss>;
>> +                               interrupts = <12>;
>> +
> [...]
>>                 };
>> 
>>                 dispcc: clock-controller@...0000 {
>> @@ -2449,8 +2521,8 @@ dispcc: clock-controller@...0000 {
>>                                  <&gcc GCC_DISP_GPLL0_CLK_SRC>,
>>                                  <&dsi_phy 0>,
>>                                  <&dsi_phy 1>,
>> -                                <0>,
>> -                                <0>;
>> +                                <&msm_dp 0>,
>> +                                <&msm_dp 1>;
> 
> Don't think we should apply this still because the binding will change
> when the phy is split out to qmp node. Maybe just leave this part off
> for now?
Ok fine. But, that will break DP driver functionality.