linux-kernel - Re: [PATCH v2 6/7] arm64: dts: qcom: qcs8300: add Display Serial Interface device nodes

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Message-ID: <40a9643d-01b3-434d-9163-da35c2e469b4@oss.qualcomm.com>
Date: Tue, 14 Oct 2025 10:53:30 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Ayushi Makhija <quic_amakhija@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, robdclark@...il.com, sean@...rly.run,
        marijn.suijten@...ainline.org, andersson@...nel.org, robh@...nel.org,
        robh+dt@...nel.org, krzk+dt@...nel.org, konradybcio@...nel.org,
        conor+dt@...nel.org, andrzej.hajda@...el.com,
        neil.armstrong@...aro.org, rfoss@...nel.org,
        Laurent.pinchart@...asonboard.com, jonathan@...ek.ca, jonas@...boo.se,
        jernej.skrabec@...il.com, quic_rajeevny@...cinc.com,
        quic_vproddut@...cinc.com
Subject: Re: [PATCH v2 6/7] arm64: dts: qcom: qcs8300: add Display Serial
 Interface device nodes

On 10/14/25 8:24 AM, Ayushi Makhija wrote:
> On 10/6/2025 3:44 PM, Dmitry Baryshkov wrote:
>> On Mon, Oct 06, 2025 at 07:09:23AM +0530, Ayushi Makhija wrote:
>>> Add device tree nodes for the DSI0 controller with their corresponding
>>> PHY found on Qualcomm QCS8300 SoC.
>>>
>>> Signed-off-by: Ayushi Makhija <quic_amakhija@...cinc.com>
>>> ---
>>>  arch/arm64/boot/dts/qcom/qcs8300.dtsi | 98 ++++++++++++++++++++++++++-
>>>  1 file changed, 97 insertions(+), 1 deletion(-)
>>>
>>> +
>>> +				mdss_dsi_opp_table: opp-table {
>>> +					compatible = "operating-points-v2";
>>> +
>>> +					opp-358000000 {
>>> +						opp-hz = /bits/ 64 <358000000>;
>>> +						required-opps = <&rpmhpd_opp_svs_l1>;
>>> +					};
>>
>> Does it really support only a single freq?
>>
> 
> Hi Dmitry, yes it support only single opp frequency, I got this information from ipcat sw for monaco, similar
> we have used for LeMans.

I can attest to that, even though I'm a little surprised that's
the case

Konrad