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From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
To: Jeykumar Sankaran <quic_jeykumar@quicinc.com>,
	Konrad Dybcio <konrad.dybcio@linaro.org>,
	Rob Clark <robdclark@gmail.com>,
	Abhinav Kumar <quic_abhinavk@quicinc.com>,
	Sean Paul <sean@poorly.run>, David Airlie <airlied@gmail.com>,
	Daniel Vetter <daniel@ffwll.ch>, Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Krishna Manikandan <quic_mkrishn@quicinc.com>
Cc: devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	Marijn Suijten <marijn.suijten@somainline.org>,
	freedreno@lists.freedesktop.org
Subject: Re: [Freedreno] [PATCH 1/5] dt-bindings: display/msm: Add reg bus interconnect
Date: Thu, 20 Apr 2023 03:26:04 +0300	[thread overview]
Message-ID: <62f99cee-ecc2-2969-22da-d8f43b8b7064@linaro.org> (raw)
In-Reply-To: <c20433cb-02e4-bd82-99ab-bd25a49771d4@quicinc.com>

On 19/04/2023 23:05, Jeykumar Sankaran wrote:
> Resending the question as the previous one was sent only to the 
> freedreno list. Apologies for spamming!
> 
> On 4/17/2023 8:30 AM, Konrad Dybcio wrote:
>> Apart from the already handled data bus (MAS_MDP_Pn<->DDR), there's
>> another path that needs to be handled to ensure MDSS functions properly,
>> namely the "reg bus", a.k.a the CPU-MDSS interconnect.
>>
>> Gating that path may have a variety of effects.. from none to otherwise
>> inexplicable DSI timeouts..
>>
>> Describe it in bindings to allow for use in device trees.
>>
>> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
>> ---
>>   Documentation/devicetree/bindings/display/msm/mdss-common.yaml | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git 
>> a/Documentation/devicetree/bindings/display/msm/mdss-common.yaml 
>> b/Documentation/devicetree/bindings/display/msm/mdss-common.yaml
>> index ccd7d6417523..9eb5b6d3e0b9 100644
>> --- a/Documentation/devicetree/bindings/display/msm/mdss-common.yaml
>> +++ b/Documentation/devicetree/bindings/display/msm/mdss-common.yaml
>> @@ -72,6 +72,7 @@ properties:
>>       items:
>>         - const: mdp0-mem
>>         - const: mdp1-mem
>> +      - const: cpu-cfg
> If posted already, please point to the DTSI patch for this ICC path.

Probably it's worth updating the example in one of mdss schemas.

>>     resets:
>>       items:
>>

-- 
With best wishes
Dmitry


  reply	other threads:[~2023-04-20  0:26 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-17 15:30 [PATCH 0/5] MDSS reg bus interconnect Konrad Dybcio
2023-04-17 15:30 ` [PATCH 1/5] dt-bindings: display/msm: Add " Konrad Dybcio
2023-04-18  7:24   ` Krzysztof Kozlowski
2023-04-19 20:05   ` [Freedreno] " Jeykumar Sankaran
2023-04-20  0:26     ` Dmitry Baryshkov [this message]
2023-04-17 15:30 ` [PATCH 2/5] drm/msm/dpu1: Rename path references to mdp_path Konrad Dybcio
2023-04-20  0:27   ` Dmitry Baryshkov
2023-04-17 15:30 ` [PATCH 3/5] drm/msm/mdss: " Konrad Dybcio
2023-04-20  0:27   ` Dmitry Baryshkov
2023-04-17 15:30 ` [PATCH 4/5] drm/msm/mdss: Handle the reg bus ICC path Konrad Dybcio
2023-04-17 15:30 ` [PATCH 5/5] drm/msm/dpu1: " Konrad Dybcio
2023-04-17 15:55   ` Konrad Dybcio
2023-04-19 19:06   ` [Freedreno] " Jeykumar Sankaran
2023-04-19 19:48     ` Konrad Dybcio
2023-04-19 20:11       ` Jeykumar Sankaran
2023-04-19 21:26         ` Konrad Dybcio
2023-04-20  0:34           ` Dmitry Baryshkov
2023-04-19 20:07 ` [Freedreno] [PATCH 0/5] MDSS reg bus interconnect Jeykumar Sankaran
2023-05-29  2:42 ` Dmitry Baryshkov
2023-05-29  7:42   ` Konrad Dybcio
2023-05-29  8:47     ` Dmitry Baryshkov
2023-05-29  9:08       ` Konrad Dybcio
2023-05-29 10:01         ` Dmitry Baryshkov

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