linux-kernel - Re: [PATCH v14 1/5] arm64: dts: qcom: add data-lanes and link-freuencies into dp

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Date:   Fri, 23 Dec 2022 08:57:33 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Kuogee Hsieh <quic_khsieh@...cinc.com>,
        dri-devel@...ts.freedesktop.org, robdclark@...il.com,
        sean@...rly.run, swboyd@...omium.org, dianders@...omium.org,
        vkoul@...nel.org, daniel@...ll.ch, agross@...nel.org,
        dmitry.baryshkov@...aro.org, andersson@...nel.org,
        konrad.dybcio@...ainline.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, devicetree@...r.kernel.org,
        airlied@...il.com
Cc:     quic_abhinavk@...cinc.com, quic_sbillaka@...cinc.com,
        freedreno@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v14 1/5] arm64: dts: qcom: add data-lanes and
 link-freuencies into dp_out endpoint

On 22/12/2022 17:22, Kuogee Hsieh wrote:
> 
> On 12/22/2022 2:47 AM, Krzysztof Kozlowski wrote:
>> On 16/12/2022 20:11, Kuogee Hsieh wrote:
>>> Move data-lanes property from mdss_dp node to dp_out endpoint. Also
>>> add link-frequencies property into dp_out endpoint as well. The last
>>> frequency specified at link-frequencies will be the max link rate
>>> supported by DP.
>>>
>>> Changes in v5:
>>> -- revert changes at sc7180.dtsi and sc7280.dtsi
>>> -- add &dp_out to sc7180-trogdor.dtsi and sc7280-herobrine.dtsi
>>>
>>> Changes in v6:
>>> -- add data-lanes and link-frequencies to yaml
>>>
>>> Changes in v7:
>>> -- change 160000000 to 1620000000
>>> -- separate yaml to different patch
>>>
>>> Changes in v8:
>>> -- correct Bjorn mail address to kernel.org
>>>
>>> Changes in v9:
>>> -- use symbol rate (hz) for link-frequencies at dp_out at sc7180_trogdor.dtsi
>>>
>>> Changes in v13:
>>> -- delete an extra space at data-lanes
>>>
>>> Signed-off-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
>>> ---
>>>   arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi   | 6 +++++-
>>>   arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi | 4 ++++
>>>   2 files changed, 9 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
>>> index eae22e6..e2783dd 100644
>>> --- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
>>> +++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
>>> @@ -814,7 +814,11 @@ hp_i2c: &i2c9 {
>>>   	status = "okay";
>>>   	pinctrl-names = "default";
>>>   	pinctrl-0 = <&dp_hot_plug_det>;
>>> -	data-lanes = <0 1>;
>>> +};
>>> +
>>> +&dp_out {
>>> +    data-lanes = <0 1>;
>>> +    link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000>;
>> Messed order of nodes.
> 
> can you please give me more details and how should i fixed it?

Node overrides/extends are more or less ordered by name. dp should not
be around mdp, but for example dsi.

Best regards,
Krzysztof