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The GPUCC block on SM6375 is powered by VDD_CX and VDD_GX. If the latter rail is not online, GX_GDSC will never turn on. Describe the missing handles. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Bjorn Andersson <andersson@kernel.org> Link: https://lore.kernel.org/r/20230529-topic-sm6375gpuccpd-v1-1-8d57c41a6066@linaro.org
76 lines
1.9 KiB
YAML
76 lines
1.9 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/clock/qcom,sm6375-gpucc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Qualcomm Graphics Clock & Reset Controller on SM6375
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maintainers:
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- Konrad Dybcio <konrad.dybcio@linaro.org>
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description: |
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Qualcomm graphics clock control module provides clocks, resets and power
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domains on Qualcomm SoCs.
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See also:: include/dt-bindings/clock/qcom,sm6375-gpucc.h
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properties:
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compatible:
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enum:
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- qcom,sm6375-gpucc
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clocks:
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items:
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- description: Board XO source
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- description: GPLL0 main branch source
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- description: GPLL0 div branch source
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- description: SNoC DVM GFX source
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power-domains:
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description:
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A phandle and PM domain specifier for the VDD_GX power rail
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maxItems: 1
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required-opps:
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description:
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A phandle to an OPP node describing required VDD_GX performance point.
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maxItems: 1
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required:
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- compatible
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- clocks
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- power-domains
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- required-opps
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allOf:
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- $ref: qcom,gcc.yaml#
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/clock/qcom,sm6375-gcc.h>
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#include <dt-bindings/clock/qcom,rpmcc.h>
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#include <dt-bindings/power/qcom-rpmpd.h>
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soc {
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#address-cells = <2>;
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#size-cells = <2>;
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clock-controller@5990000 {
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compatible = "qcom,sm6375-gpucc";
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reg = <0 0x05990000 0 0x9000>;
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clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>,
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<&gcc GCC_GPU_GPLL0_CLK_SRC>,
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<&gcc GCC_GPU_GPLL0_DIV_CLK_SRC>,
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<&gcc GCC_GPU_SNOC_DVM_GFX_CLK>;
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power-domains = <&rpmpd SM6375_VDDGX>;
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required-opps = <&rpmpd_opp_low_svs>;
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#clock-cells = <1>;
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#reset-cells = <1>;
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#power-domain-cells = <1>;
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};
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};
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...
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