Re: [PATCH v2 2/3] arm64: dts: qcom: sc8280xp: Add GPU related nodes

From: Konrad Dybcio
Date: Tue May 23 2023 - 04:10:38 EST



On 23.05.2023 03:15, Bjorn Andersson wrote:
> From: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
>
> Add Adreno SMMU, GPU clock controller, GMU and GPU nodes for the
> SC8280XP.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> Signed-off-by: Bjorn Andersson <quic_bjorande@xxxxxxxxxxx>
> ---
It does not look like you tested the DTS against bindings. Please run
`make dtbs_check` (see
Documentation/devicetree/bindings/writing-schema.rst for instructions).

>
> Changes since v1:
> - Dropped gmu_pdc_seq region from &gmu, as it shouldn't have been used.
> - Added missing compatible to &adreno_smmu.
> - Dropped aoss_qmp clock in &gmu and &adreno_smmu.
>
> arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 169 +++++++++++++++++++++++++
> 1 file changed, 169 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> index d2a2224d138a..329ec2119ecf 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> @@ -6,6 +6,7 @@
>
> #include <dt-bindings/clock/qcom,dispcc-sc8280xp.h>
> #include <dt-bindings/clock/qcom,gcc-sc8280xp.h>
> +#include <dt-bindings/clock/qcom,gpucc-sc8280xp.h>
> #include <dt-bindings/clock/qcom,rpmh.h>
> #include <dt-bindings/interconnect/qcom,osm-l3.h>
> #include <dt-bindings/interconnect/qcom,sc8280xp.h>
> @@ -2331,6 +2332,174 @@ tcsr: syscon@1fc0000 {
> reg = <0x0 0x01fc0000 0x0 0x30000>;
> };
>
> + gpu: gpu@3d00000 {
> + compatible = "qcom,adreno-690.0", "qcom,adreno";
> +
> + reg = <0 0x03d00000 0 0x40000>,
> + <0 0x03d9e000 0 0x1000>,
> + <0 0x03d61000 0 0x800>;
> + reg-names = "kgsl_3d0_reg_memory",
> + "cx_mem",
> + "cx_dbgc";
> + interrupts = <GIC_SPI 300 IRQ_TYPE_LEVEL_HIGH>;
> + iommus = <&adreno_smmu 0 0xc00>, <&adreno_smmu 1 0xc00>;
> + operating-points-v2 = <&gpu_opp_table>;
> +
> + qcom,gmu = <&gmu>;
> + interconnects = <&gem_noc MASTER_GFX3D 0 &mc_virt SLAVE_EBI1 0>;
> + interconnect-names = "gfx-mem";
> + #cooling-cells = <2>;
> +
> + status = "disabled";
> +
> + gpu_opp_table: opp-table {
> + compatible = "operating-points-v2";
> +
> + opp-270000000 {
> + opp-hz = /bits/ 64 <270000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
> + opp-peak-kBps = <451000>;
> + };
> +
> + opp-410000000 {
> + opp-hz = /bits/ 64 <410000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
> + opp-peak-kBps = <1555000>;
> + };
> +
> + opp-500000000 {
> + opp-hz = /bits/ 64 <500000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
> + opp-peak-kBps = <1555000>;
> + };
> +
> + opp-547000000 {
> + opp-hz = /bits/ 64 <547000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_SVS_L2>;
> + opp-peak-kBps = <1555000>;
> + };
> +
> + opp-606000000 {
> + opp-hz = /bits/ 64 <606000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
> + opp-peak-kBps = <2736000>;
> + };
> +
> + opp-640000000 {
> + opp-hz = /bits/ 64 <640000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>;
> + opp-peak-kBps = <2736000>;
> + };
> +
> + opp-690000000 {
> + opp-hz = /bits/ 64 <690000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_TURBO>;
> + opp-peak-kBps = <2736000>;
> + };
> + };
> + };
> +
> + gmu: gmu@3d6a000 {
> + compatible = "qcom,adreno-gmu-690.0", "qcom,adreno-gmu";
> + reg = <0 0x03d6a000 0 0x34000>,
> + <0 0x03de0000 0 0x10000>,
> + <0 0x0b290000 0 0x10000>;
> + reg-names = "gmu", "rscc", "gmu_pdc";
> + interrupts = <GIC_SPI 304 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 305 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "hfi", "gmu";
> + clocks = <&gpucc GPU_CC_CX_GMU_CLK>,
> + <&gpucc GPU_CC_CXO_CLK>,
> + <&gcc GCC_DDRSS_GPU_AXI_CLK>,
> + <&gcc GCC_GPU_MEMNOC_GFX_CLK>,
> + <&gpucc GPU_CC_AHB_CLK>,
> + <&gpucc GPU_CC_HUB_CX_INT_CLK>,
> + <&gpucc GPU_CC_HLOS1_VOTE_GPU_SMMU_CLK>;
> + clock-names = "gmu",
> + "cxo",
> + "axi",
> + "memnoc",
> + "ahb",
> + "hub",
> + "smmu_vote";
> + power-domains = <&gpucc GPU_CC_CX_GDSC>,
> + <&gpucc GPU_CC_GX_GDSC>;
> + power-domain-names = "cx",
> + "gx";
> + iommus = <&adreno_smmu 5 0xc00>;
> + operating-points-v2 = <&gmu_opp_table>;
> +
> + status = "disabled";
I've recently discovered that - and I am not 100% sure - all GMUs are
cache-coherent. Could you please ask somebody at qc about this?

> +
> + gmu_opp_table: opp-table {
> + compatible = "operating-points-v2";
> +
> + opp-200000000 {
> + opp-hz = /bits/ 64 <200000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>;
> + };
Missing 500MHz + RPMH_REGULATOR_LEVEL_SVS

(that may be used in the future for hw scheduling)
> + };
> + };
> +
> + gpucc: clock-controller@3d90000 {
> + compatible = "qcom,sc8280xp-gpucc";
> + reg = <0 0x03d90000 0 0x9000>;
> + clocks = <&rpmhcc RPMH_CXO_CLK>,
> + <&gcc GCC_GPU_GPLL0_CLK_SRC>,
> + <&gcc GCC_GPU_GPLL0_DIV_CLK_SRC>;
> + clock-names = "bi_tcxo",
> + "gcc_gpu_gpll0_clk_src",
> + "gcc_gpu_gpll0_div_clk_src";
FWIW the driver doesn't use clock-names, but the binding defines it,
so I suppose it's fine

> +
> + power-domains = <&rpmhpd SC8280XP_GFX>;
> + #clock-cells = <1>;
> + #reset-cells = <1>;
> + #power-domain-cells = <1>;
> +
> + status = "disabled";
> + };
> +
> + adreno_smmu: iommu@3da0000 {
> + compatible = "qcom,sc8280xp-smmu-500", "qcom,adreno-smmu",
> + "qcom,smmu-500", "arm,mmu-500";
> + reg = <0 0x03da0000 0 0x20000>;
> + #iommu-cells = <2>;
> + #global-interrupts = <2>;
> + interrupts = <GIC_SPI 672 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 673 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 678 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 679 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 680 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 681 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 682 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 683 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 684 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 685 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 686 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 687 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 688 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 689 IRQ_TYPE_LEVEL_HIGH>;
> +
> + clocks = <&gcc GCC_GPU_MEMNOC_GFX_CLK>,
> + <&gcc GCC_GPU_SNOC_DVM_GFX_CLK>,
> + <&gpucc GPU_CC_AHB_CLK>,
> + <&gpucc GPU_CC_HLOS1_VOTE_GPU_SMMU_CLK>,
> + <&gpucc GPU_CC_CX_GMU_CLK>,
> + <&gpucc GPU_CC_HUB_CX_INT_CLK>,
> + <&gpucc GPU_CC_HUB_AON_CLK>;
> + clock-names = "gcc_gpu_memnoc_gfx_clk",
> + "gcc_gpu_snoc_dvm_gfx_clk",
> + "gpu_cc_ahb_clk",
> + "gpu_cc_hlos1_vote_gpu_smmu_clk",
> + "gpu_cc_cx_gmu_clk",
> + "gpu_cc_hub_cx_int_clk",
> + "gpu_cc_hub_aon_clk";
> +
> + power-domains = <&gpucc GPU_CC_CX_GDSC>;
> +
> + status = "disabled";
This one should be dma-coherent (per downstream, plus 8350's mmu is for sure)

Konrad
> + };
> +
> usb_0_hsphy: phy@88e5000 {
> compatible = "qcom,sc8280xp-usb-hs-phy",
> "qcom,usb-snps-hs-5nm-phy";