mirror of https://gitee.com/openkylin/linux.git
dt-bindings: clock: Add YAML schemas for the QCOM GCC clock bindings
The GCC clock provider have a bunch of generic properties that are needed in a device tree. Add a YAML schemas for those. Signed-off-by: Taniya Das <tdas@codeaurora.org> Link: https://lkml.kernel.org/r/20191014102308.27441-4-tdas@codeaurora.org Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Taniya Das
Stephen Boyd
parent
ffe37ede0a
commit
9de7269e97
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Qualcomm Global Clock & Reset Controller Binding
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------------------------------------------------
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Required properties :
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- compatible : shall contain only one of the following:
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"qcom,gcc-apq8064"
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"qcom,gcc-apq8084"
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"qcom,gcc-ipq8064"
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"qcom,gcc-ipq4019"
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"qcom,gcc-ipq8074"
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"qcom,gcc-msm8660"
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"qcom,gcc-msm8916"
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"qcom,gcc-msm8960"
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"qcom,gcc-msm8974"
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"qcom,gcc-msm8974pro"
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"qcom,gcc-msm8974pro-ac"
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"qcom,gcc-msm8994"
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"qcom,gcc-msm8996"
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"qcom,gcc-msm8998"
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"qcom,gcc-mdm9615"
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"qcom,gcc-qcs404"
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"qcom,gcc-sdm630"
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"qcom,gcc-sdm660"
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"qcom,gcc-sdm845"
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"qcom,gcc-sm8150"
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- reg : shall contain base register location and length
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- #clock-cells : shall contain 1
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- #reset-cells : shall contain 1
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Optional properties :
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- #power-domain-cells : shall contain 1
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- Qualcomm TSENS (thermal sensor device) on some devices can
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be part of GCC and hence the TSENS properties can also be
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part of the GCC/clock-controller node.
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For more details on the TSENS properties please refer
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Documentation/devicetree/bindings/thermal/qcom-tsens.txt
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- protected-clocks : Protected clock specifier list as per common clock
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binding.
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For SM8150 only:
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- clocks: a list of phandles and clock-specifier pairs,
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one for each entry in clock-names.
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- clock-names: "bi_tcxo" (required)
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"sleep_clk" (optional)
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"aud_ref_clock" (optional)
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Example:
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clock-controller@900000 {
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compatible = "qcom,gcc-msm8960";
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reg = <0x900000 0x4000>;
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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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Example of GCC with TSENS properties:
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clock-controller@900000 {
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compatible = "qcom,gcc-apq8064";
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reg = <0x00900000 0x4000>;
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nvmem-cells = <&tsens_calib>, <&tsens_backup>;
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nvmem-cell-names = "calib", "calib_backup";
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#clock-cells = <1>;
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#reset-cells = <1>;
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#thermal-sensor-cells = <1>;
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};
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Example of GCC with protected-clocks properties:
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clock-controller@100000 {
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compatible = "qcom,gcc-sdm845";
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reg = <0x100000 0x1f0000>;
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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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protected-clocks = <GCC_QSPI_CORE_CLK>,
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<GCC_QSPI_CORE_CLK_SRC>,
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<GCC_QSPI_CNOC_PERIPH_AHB_CLK>,
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<GCC_LPASS_Q6_AXI_CLK>,
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<GCC_LPASS_SWAY_CLK>;
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};
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Example of GCC with clocks
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gcc: clock-controller@100000 {
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compatible = "qcom,gcc-sm8150";
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reg = <0x00100000 0x1f0000>;
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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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clock-names = "bi_tcxo",
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"sleep_clk";
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clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>,
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<&sleep_clk>;
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};
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@ -0,0 +1,174 @@
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# SPDX-License-Identifier: GPL-2.0-only
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/bindings/clock/qcom,gcc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Qualcomm Global Clock & Reset Controller Binding
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maintainers:
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- Stephen Boyd <sboyd@kernel.org>
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- Taniya Das <tdas@codeaurora.org>
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description: |
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Qualcomm global clock control module which supports the clocks, resets and
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power domains.
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properties:
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compatible :
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enum:
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- qcom,gcc-apq8064
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- qcom,gcc-apq8084
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- qcom,gcc-ipq8064
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- qcom,gcc-ipq4019
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- qcom,gcc-ipq8074
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- qcom,gcc-msm8660
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- qcom,gcc-msm8916
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- qcom,gcc-msm8960
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- qcom,gcc-msm8974
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- qcom,gcc-msm8974pro
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- qcom,gcc-msm8974pro-ac
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- qcom,gcc-msm8994
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- qcom,gcc-msm8996
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- qcom,gcc-msm8998
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- qcom,gcc-mdm9615
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- qcom,gcc-qcs404
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- qcom,gcc-sdm630
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- qcom,gcc-sdm660
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- qcom,gcc-sdm845
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- qcom,gcc-sm8150
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clocks:
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minItems: 1
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maxItems: 3
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items:
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- description: Board XO source
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- description: Board active XO source
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- description: Sleep clock source
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clock-names:
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minItems: 1
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maxItems: 3
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items:
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- const: bi_tcxo
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- const: bi_tcxo_ao
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- const: sleep_clk
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'#clock-cells':
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const: 1
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'#reset-cells':
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const: 1
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'#power-domain-cells':
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const: 1
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reg:
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maxItems: 1
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nvmem-cells:
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minItems: 1
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maxItems: 2
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description:
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Qualcomm TSENS (thermal sensor device) on some devices can
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be part of GCC and hence the TSENS properties can also be part
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of the GCC/clock-controller node.
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For more details on the TSENS properties please refer
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Documentation/devicetree/bindings/thermal/qcom-tsens.txt
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nvmem-cell-names:
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minItems: 1
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maxItems: 2
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description:
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Names for each nvmem-cells specified.
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items:
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- const: calib
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- const: calib_backup
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'thermal-sensor-cells':
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const: 1
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protected-clocks:
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description:
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Protected clock specifier list as per common clock binding
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required:
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- compatible
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- reg
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- '#clock-cells'
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- '#reset-cells'
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- '#power-domain-cells'
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if:
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properties:
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compatible:
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contains:
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const: qcom,gcc-apq8064
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then:
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required:
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- nvmem-cells
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- nvmem-cell-names
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- '#thermal-sensor-cells'
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else:
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if:
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properties:
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compatible:
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contains:
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enum:
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- qcom,gcc-sm8150
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then:
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required:
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- clocks
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- clock-names
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examples:
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# Example for GCC for MSM8960:
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- |
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clock-controller@900000 {
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compatible = "qcom,gcc-msm8960";
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reg = <0x900000 0x4000>;
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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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# Example of GCC with TSENS properties:
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- |
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clock-controller@900000 {
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compatible = "qcom,gcc-apq8064";
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reg = <0x00900000 0x4000>;
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nvmem-cells = <&tsens_calib>, <&tsens_backup>;
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nvmem-cell-names = "calib", "calib_backup";
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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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#thermal-sensor-cells = <1>;
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};
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# Example of GCC with protected-clocks properties:
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- |
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clock-controller@100000 {
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compatible = "qcom,gcc-sdm845";
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reg = <0x100000 0x1f0000>;
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protected-clocks = <187>, <188>, <189>, <190>, <191>;
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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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# Example of GCC with clock node properties for SM8150:
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- |
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clock-controller@100000 {
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compatible = "qcom,gcc-sm8150";
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reg = <0x00100000 0x1f0000>;
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clocks = <&rpmhcc 0>, <&rpmhcc 1>, <&sleep_clk>;
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clock-names = "bi_tcxo", "bi_tcxo_ao", "sleep_clk";
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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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