linux-kernel - Re: [PATCH v4 5/7] drm/msm: adreno: enable GMU bandwidth for A740 and A750

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Message-ID: <65d4378a-43f0-49ac-a47d-c700ae5e7de1@quicinc.com>
Date: Mon, 9 Dec 2024 18:29:34 +0530
From: Akhil P Oommen <quic_akhilpo@...cinc.com>
To: Neil Armstrong <neil.armstrong@...aro.org>,
        Rob Clark
	<robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        Konrad Dybcio
	<konradybcio@...nel.org>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        "Dmitry
 Baryshkov" <dmitry.baryshkov@...aro.org>,
        Marijn Suijten
	<marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, "Simona
 Vetter" <simona@...ll.ch>,
        Bjorn Andersson <andersson@...nel.org>, Rob
 Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor
 Dooley <conor+dt@...nel.org>
CC: <linux-arm-msm@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <freedreno@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH v4 5/7] drm/msm: adreno: enable GMU bandwidth for A740 and
 A750

On 12/5/2024 8:31 PM, Neil Armstrong wrote:
> Now all the DDR bandwidth voting via the GPU Management Unit (GMU)
> is in place, declare the Bus Control Modules (BCMs) and the
> corresponding parameters in the GPU info struct.
> 
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>

Reviewed-by: Akhil P Oommen <quic_akhilpo@...cinc.com>

-Akhil
> ---
>  drivers/gpu/drm/msm/adreno/a6xx_catalog.c | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
> 
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_catalog.c b/drivers/gpu/drm/msm/adreno/a6xx_catalog.c
> index 0c560e84ad5a53bb4e8a49ba4e153ce9cf33f7ae..edffb7737a97b268bb2986d557969e651988a344 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_catalog.c
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_catalog.c
> @@ -1388,6 +1388,17 @@ static const struct adreno_info a7xx_gpus[] = {
>  			.pwrup_reglist = &a7xx_pwrup_reglist,
>  			.gmu_chipid = 0x7020100,
>  			.gmu_cgc_mode = 0x00020202,
> +			.bcms = (const struct a6xx_bcm[]) {
> +				{ .name = "SH0", .buswidth = 16 },
> +				{ .name = "MC0", .buswidth = 4 },
> +				{
> +					.name = "ACV",
> +					.fixed = true,
> +					.perfmode = BIT(3),
> +					.perfmode_bw = 16500000,
> +				},
> +				{ /* sentinel */ },
> +			},
>  		},
>  		.address_space_size = SZ_16G,
>  		.preempt_record_size = 4192 * SZ_1K,
> @@ -1432,6 +1443,17 @@ static const struct adreno_info a7xx_gpus[] = {
>  			.pwrup_reglist = &a7xx_pwrup_reglist,
>  			.gmu_chipid = 0x7090100,
>  			.gmu_cgc_mode = 0x00020202,
> +			.bcms = (const struct a6xx_bcm[]) {
> +				{ .name = "SH0", .buswidth = 16 },
> +				{ .name = "MC0", .buswidth = 4 },
> +				{
> +					.name = "ACV",
> +					.fixed = true,
> +					.perfmode = BIT(2),
> +					.perfmode_bw = 10687500,
> +				},
> +				{ /* sentinel */ },
> +			},
>  		},
>  		.address_space_size = SZ_16G,
>  		.preempt_record_size = 3572 * SZ_1K,
>