linux-kernel - Re: [PATCH v2 3/6] drm/msm/a6xx: Add support for Adreno 623

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Message-ID: <4c81f193-a1d0-4abc-8be5-07c862de8937@quicinc.com>
Date: Fri, 28 Feb 2025 13:43:12 +0530
From: Akhil P Oommen <quic_akhilpo@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC: Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        "Konrad
 Dybcio" <konradybcio@...nel.org>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie
	<airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Maarten Lankhorst
	<maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <freedreno@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, Jie Zhang
	<quic_jiezh@...cinc.com>
Subject: Re: [PATCH v2 3/6] drm/msm/a6xx: Add support for Adreno 623

On 2/28/2025 4:56 AM, Dmitry Baryshkov wrote:
> On Fri, Feb 28, 2025 at 01:37:51AM +0530, Akhil P Oommen wrote:
>> From: Jie Zhang <quic_jiezh@...cinc.com>
>>
>> Add support for Adreno 623 GPU found in QCS8300 chipsets.
>>
>> Signed-off-by: Jie Zhang <quic_jiezh@...cinc.com>
>> Signed-off-by: Akhil P Oommen <quic_akhilpo@...cinc.com>
>> ---
>>  drivers/gpu/drm/msm/adreno/a6xx_catalog.c   | 29 +++++++++++++++++++++++++++++
>>  drivers/gpu/drm/msm/adreno/a6xx_gpu.c       |  8 ++++++++
>>  drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c |  2 +-
>>  drivers/gpu/drm/msm/adreno/adreno_gpu.h     |  5 +++++
>>  4 files changed, 43 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
>> index 0ae29a7c8a4d3f74236a35cc919f69d5c0a384a0..1820c167fcee609deee3d49e7b5dd3736da23d99 100644
>> --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
>> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
>> @@ -616,6 +616,14 @@ static void a6xx_calc_ubwc_config(struct adreno_gpu *gpu)
>>  		gpu->ubwc_config.uavflagprd_inv = 2;
>>  	}
>>  
>> +	if (adreno_is_a623(gpu)) {
>> +		gpu->ubwc_config.highest_bank_bit = 16;
> 
> Just to doublecheck, the MDSS patch for QCS8300 used HBB=2, which
> means 15. Is 16 correct here? Or might the be a mistake in the MDSS
> patch?

https://patchwork.freedesktop.org/patch/632957/
I see HBB=3 here.

-Akhil

> 
>> +		gpu->ubwc_config.amsbc = 1;
>> +		gpu->ubwc_config.rgb565_predicator = 1;
>> +		gpu->ubwc_config.uavflagprd_inv = 2;
>> +		gpu->ubwc_config.macrotile_mode = 1;
>> +	}
>> +
>>  	if (adreno_is_a640_family(gpu))
>>  		gpu->ubwc_config.amsbc = 1;
>>