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Diffstat (limited to 'Documentation/devicetree/bindings/clock/renesas,rzv2h-cpg.yaml')
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1 files changed, 84 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/clock/renesas,rzv2h-cpg.yaml b/Documentation/devicetree/bindings/clock/renesas,rzv2h-cpg.yaml new file mode 100644 index 000000000000..f261445bf341 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/renesas,rzv2h-cpg.yaml @@ -0,0 +1,84 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/renesas,rzv2h-cpg.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/{G3E,V2H(P),V2N} Clock Pulse Generator (CPG) + +maintainers: + - Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> + +description: + On Renesas RZ/{G3E,V2H(P),V2N} SoCs, the CPG (Clock Pulse Generator) handles + generation and control of clock signals for the IP modules, generation and + control of resets, and control over booting, low power consumption and power + supply domains. + +properties: + compatible: + enum: + - renesas,r9a09g047-cpg # RZ/G3E + - renesas,r9a09g056-cpg # RZ/V2N + - renesas,r9a09g057-cpg # RZ/V2H + + reg: + maxItems: 1 + + clocks: + items: + - description: AUDIO_EXTAL clock input + - description: RTXIN clock input + - description: QEXTAL clock input + + clock-names: + items: + - const: audio_extal + - const: rtxin + - const: qextal + + '#clock-cells': + description: | + - For CPG core clocks, the two clock specifier cells must be "CPG_CORE" + and a core clock reference, as defined in + <dt-bindings/clock/renesas,r9a09g0*-cpg.h>, + - For module clocks, the two clock specifier cells must be "CPG_MOD" and + a module number. The module number is calculated as the CLKON register + offset index multiplied by 16, plus the actual bit in the register + used to turn the CLK ON. For example, for CGC_GIC_0_GICCLK, the + calculation is (1 * 16 + 3) = 0x13. + const: 2 + + '#power-domain-cells': + const: 0 + + '#reset-cells': + description: + The single reset specifier cell must be the reset number. The reset number + is calculated as the reset register offset index multiplied by 16, plus the + actual bit in the register used to reset the specific IP block. For example, + for SYS_0_PRESETN, the calculation is (3 * 16 + 0) = 0x30. + const: 1 + +required: + - compatible + - reg + - clocks + - clock-names + - '#clock-cells' + - '#power-domain-cells' + - '#reset-cells' + +additionalProperties: false + +examples: + - | + clock-controller@10420000 { + compatible = "renesas,r9a09g057-cpg"; + reg = <0x10420000 0x10000>; + clocks = <&audio_extal_clk>, <&rtxin_clk>, <&qextal_clk>; + clock-names = "audio_extal", "rtxin", "qextal"; + #clock-cells = <2>; + #power-domain-cells = <0>; + #reset-cells = <1>; + }; |