linux-kernel - Re: [PATCH v3 2/3] arm64: dts: qcom: sc7280: Move video-firmware to chrome-common

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Date: Sat, 27 Jan 2024 16:29:48 -0600
From: Bjorn Andersson <andersson@...nel.org>
To: Luca Weiss <luca.weiss@...rphone.com>
Cc: Stanimir Varbanov <stanimir.k.varbanov@...il.com>, 
	Vikash Garodia <quic_vgarodia@...cinc.com>, Bryan O'Donoghue <bryan.odonoghue@...aro.org>, 
	Andy Gross <agross@...nel.org>, Konrad Dybcio <konrad.dybcio@...aro.org>, 
	Mauro Carvalho Chehab <mchehab@...nel.org>, cros-qcom-dts-watchers@...omium.org, 
	Rob Herring <robh+dt@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
	Conor Dooley <conor+dt@...nel.org>, ~postmarketos/upstreaming@...ts.sr.ht, 
	phone-devel@...r.kernel.org, linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v3 2/3] arm64: dts: qcom: sc7280: Move video-firmware to
 chrome-common

On Fri, Dec 01, 2023 at 10:33:19AM +0100, Luca Weiss wrote:
> If the video-firmware node is present, the venus driver assumes we're on
> a system that doesn't use TZ for starting venus, like on ChromeOS
> devices.
> 
> Move the video-firmware node to chrome-common.dtsi so we can use venus
> on a non-ChromeOS devices. We also need to move the secure SID 0x2184
> for iommu since (on some boards) we cannot touch that.
> 
> At the same time also disable the venus node by default in the dtsi,
> like it's done on other SoCs.
> 
> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
> Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
> ---
>  arch/arm64/boot/dts/qcom/sc7280-chrome-common.dtsi | 11 +++++++++++
>  arch/arm64/boot/dts/qcom/sc7280.dtsi               |  9 +++------
>  2 files changed, 14 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7280-chrome-common.dtsi b/arch/arm64/boot/dts/qcom/sc7280-chrome-common.dtsi
> index 5d462ae14ba1..459ff877df54 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280-chrome-common.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280-chrome-common.dtsi
> @@ -104,6 +104,17 @@ &scm {
>  	dma-coherent;
>  };
>  
> +&venus {
> +	iommus = <&apps_smmu 0x2180 0x20>,
> +		 <&apps_smmu 0x2184 0x20>;
> +
> +	status = "okay";
> +
> +	video-firmware {
> +		iommus = <&apps_smmu 0x21a2 0x0>;
> +	};
> +};
> +
>  &watchdog {
>  	status = "okay";
>  };
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 326897af117a..0ff9a2484096 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -3836,10 +3836,11 @@ venus: video-codec@...0000 {
>  					<&mmss_noc MASTER_VIDEO_P0 0 &mc_virt SLAVE_EBI1 0>;
>  			interconnect-names = "cpu-cfg", "video-mem";
>  
> -			iommus = <&apps_smmu 0x2180 0x20>,
> -				 <&apps_smmu 0x2184 0x20>;
> +			iommus = <&apps_smmu 0x2180 0x20>;

qcom,sc7280-venus expects 2 items here. Please follow up with a patch to
the binding, if you haven't send one already.

Thanks,
Bjorn

>  			memory-region = <&video_mem>;
>  
> +			status = "disabled";
> +
>  			video-decoder {
>  				compatible = "venus-decoder";
>  			};
> @@ -3848,10 +3849,6 @@ video-encoder {
>  				compatible = "venus-encoder";
>  			};
>  
> -			video-firmware {
> -				iommus = <&apps_smmu 0x21a2 0x0>;
> -			};
> -
>  			venus_opp_table: opp-table {
>  				compatible = "operating-points-v2";
>  
> 
> -- 
> 2.43.0
>