linux-kernel - Re: [PATCH 3/7] media: qcom: camss: Add SM8750 compatible camss driver

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Message-ID: <e0ad09b4-0bfc-467d-b93e-892ef8a44a94@linaro.org>
Date: Thu, 27 Nov 2025 09:46:59 +0000
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Hangxiang Ma <hangxiang.ma@....qualcomm.com>,
 Loic Poulain <loic.poulain@....qualcomm.com>, Robert Foss
 <rfoss@...nel.org>, Andi Shyti <andi.shyti@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Todor Tomov <todor.too@...il.com>,
 Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>,
 Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-i2c@...r.kernel.org, linux-arm-msm@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-media@...r.kernel.org, jeyaprakash.soundrapandian@....qualcomm.com,
 Vijay Kumar Tumati <vijay.tumati@....qualcomm.com>
Subject: Re: [PATCH 3/7] media: qcom: camss: Add SM8750 compatible camss
 driver

On 26/11/2025 09:38, Hangxiang Ma wrote:
> Add support for SM8750 in the camss driver. Add high level resource
> information along with the bus bandwidth votes. Module level detailed
> resource information will be enumerated in the following patches of the
> series.
> 
> Signed-off-by: Hangxiang Ma <hangxiang.ma@....qualcomm.com>
> ---
>   drivers/media/platform/qcom/camss/camss.c | 22 ++++++++++++++++++++++
>   drivers/media/platform/qcom/camss/camss.h |  1 +
>   2 files changed, 23 insertions(+)
> 
> diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
> index 5ee43c8a9ae4..805e2fbd97dd 100644
> --- a/drivers/media/platform/qcom/camss/camss.c
> +++ b/drivers/media/platform/qcom/camss/camss.c
> @@ -3870,6 +3870,20 @@ static const struct resources_icc icc_res_sa8775p[] = {
>   	},
>   };
>   
> +static const struct resources_icc icc_res_sm8750[] = {
> +	{
> +		.name = "ahb",
> +		.icc_bw_tbl.avg = 150000,
> +		.icc_bw_tbl.peak = 300000,
> +	},
> +	/* Based on 4096 x 3072 30 FPS 2496 Mbps mode */
> +	{
> +		.name = "hf_mnoc",
> +		.icc_bw_tbl.avg = 471860,
> +		.icc_bw_tbl.peak = 925857,
> +	},
> +};
> +
>   static const struct camss_subdev_resources csiphy_res_x1e80100[] = {
>   	/* CSIPHY0 */
>   	{
> @@ -5283,6 +5297,13 @@ static const struct camss_resources sm8650_resources = {
>   	.vfe_num = ARRAY_SIZE(vfe_res_sm8650),
>   };
>   
> +static const struct camss_resources sm8750_resources = {
> +	.version = CAMSS_8750,
> +	.pd_name = "top",
> +	.icc_res = icc_res_sm8750,
> +	.icc_path_num = ARRAY_SIZE(icc_res_sm8750),
> +};
> +
>   static const struct camss_resources x1e80100_resources = {
>   	.version = CAMSS_X1E80100,
>   	.pd_name = "top",
> @@ -5314,6 +5335,7 @@ static const struct of_device_id camss_dt_match[] = {
>   	{ .compatible = "qcom,sm8250-camss", .data = &sm8250_resources },
>   	{ .compatible = "qcom,sm8550-camss", .data = &sm8550_resources },
>   	{ .compatible = "qcom,sm8650-camss", .data = &sm8650_resources },
> +	{ .compatible = "qcom,sm8750-camss", .data = &sm8750_resources },
>   	{ .compatible = "qcom,x1e80100-camss", .data = &x1e80100_resources },
>   	{ }
>   };
> diff --git a/drivers/media/platform/qcom/camss/camss.h b/drivers/media/platform/qcom/camss/camss.h
> index b1cc4825f027..f87b615ad1a9 100644
> --- a/drivers/media/platform/qcom/camss/camss.h
> +++ b/drivers/media/platform/qcom/camss/camss.h
> @@ -91,6 +91,7 @@ enum camss_version {
>   	CAMSS_845,
>   	CAMSS_8550,
>   	CAMSS_8650,
> +	CAMSS_8750,
>   	CAMSS_8775P,
>   	CAMSS_KAANAPALI,
>   	CAMSS_X1E80100,
> 
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>