linux-kernel - Re: [PATCH v3] arm64: dts: qcom: sm8550: add iris DT node

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Message-ID: <b05fd08d-b08b-4398-8d0d-acbb11d66300@oss.qualcomm.com>
Date: Fri, 25 Apr 2025 23:56:11 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: neil.armstrong@...aro.org, Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...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, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Dikshita Agarwal <quic_dikshita@...cinc.com>
Subject: Re: [PATCH v3] arm64: dts: qcom: sm8550: add iris DT node

On 4/24/25 6:34 PM, neil.armstrong@...aro.org wrote:
> From: Dikshita Agarwal <quic_dikshita@...cinc.com>
> 
> Add DT entries for the sm8550 iris decoder.
> 
> Since the firmware is required to be signed, only enable
> on Qualcomm development boards where the firmware is
> publicly distributed.
> 
> Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---

[...]

> +		iris: video-codec@...0000 {
> +			compatible = "qcom,sm8550-iris";
> +
> +			reg = <0 0x0aa00000 0 0xf0000>;
> +			interrupts = <GIC_SPI 174 IRQ_TYPE_LEVEL_HIGH>;
> +
> +			power-domains = <&videocc VIDEO_CC_MVS0C_GDSC>,
> +					<&videocc VIDEO_CC_MVS0_GDSC>,
> +					<&rpmhpd RPMHPD_MXC>,
> +					<&rpmhpd RPMHPD_MMCX>;
> +			power-domain-names = "venus", "vcodec0", "mxc", "mmcx";
 
Please turn this and clock-names intro vertical lists


> +			operating-points-v2 = <&iris_opp_table>;
> +
> +			clocks = <&gcc GCC_VIDEO_AXI0_CLK>,
> +				 <&videocc VIDEO_CC_MVS0C_CLK>,
> +				 <&videocc VIDEO_CC_MVS0_CLK>;
> +			clock-names = "iface", "core", "vcodec0_core";
> +
> +			interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
> +					 &config_noc SLAVE_VENUS_CFG QCOM_ICC_TAG_ACTIVE_ONLY>,
> +					<&mmss_noc MASTER_VIDEO QCOM_ICC_TAG_ALWAYS
> +					 &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>;
> +			interconnect-names = "cpu-cfg", "video-mem";
> +
> +			/* FW load region */

Not very useful

> +			memory-region = <&video_mem>;
> +
> +			resets = <&gcc GCC_VIDEO_AXI0_CLK_ARES>;
> +			reset-names = "bus";
> +
> +			iommus = <&apps_smmu 0x1940 0x0000>,

One zero does the job

> +				 <&apps_smmu 0x1947 0x0000>;

similarly, 0x1942 0x0 may come in useful too

> +			dma-coherent;
> +
> +			/*
> +			 * IRIS firmware is signed by vendors, only
> +			 * enable in boards where the proper signed firmware
> +			 * is available.
> +			 */

See 8650 patch  comment

> +			status = "disabled";
> +
> +			iris_opp_table: opp-table {
> +				compatible = "operating-points-v2";
> +
> +				opp-240000000 {
> +					opp-hz = /bits/ 64 <240000000>;
> +					required-opps = <&rpmhpd_opp_svs>,
> +							<&rpmhpd_opp_low_svs>;
> +				};
> +
> +				opp-338000000 {
> +					opp-hz = /bits/ 64 <338000000>;
> +					required-opps = <&rpmhpd_opp_svs>,
> +							<&rpmhpd_opp_svs>;
> +				};
> +
> +				opp-366000000 {
> +					opp-hz = /bits/ 64 <366000000>;
> +					required-opps = <&rpmhpd_opp_svs_l1>,
> +							<&rpmhpd_opp_svs_l1>;
> +				};
> +
> +				opp-444000000 {
> +					opp-hz = /bits/ 64 <444000000>;
> +					required-opps = <&rpmhpd_opp_turbo>,
> +							<&rpmhpd_opp_turbo>;

nom (nom nom nom)

> +				};
> +
> +				opp-533333334 {
> +					opp-hz = /bits/ 64 <533333334>;
> +					required-opps = <&rpmhpd_opp_turbo_l1>,
> +							<&rpmhpd_opp_turbo_l1>;

turbo

Konrad