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Signed-off-by: Dario Binacchi --- Changes in v3: - Added in v3 - The dt-bindings have been moved from fsl,imx8m-anatop.yaml to imx8m-clock.yaml. The anatop device (fsl,imx8m-anatop.yaml) is indeed more or less a syscon, so it represents a memory area accessible by ccm (imx8m-clock.yaml) to setup the PLLs. .../bindings/clock/imx8m-clock.yaml | 46 +++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/Documentation/devicetree/bindings/clock/imx8m-clock.yaml b/Documentation/devicetree/bindings/clock/imx8m-clock.yaml index c643d4a81478..7920393e518e 100644 --- a/Documentation/devicetree/bindings/clock/imx8m-clock.yaml +++ b/Documentation/devicetree/bindings/clock/imx8m-clock.yaml @@ -43,6 +43,40 @@ properties: ID in its "clocks" phandle cell. See include/dt-bindings/clock/imx8m-clock.h for the full list of i.MX8M clock IDs. + fsl,ssc-clocks: + $ref: /schemas/types.yaml#/definitions/phandle-array + description: + Phandles of the PLL with spread spectrum generation hardware capability. + minItems: 1 + maxItems: 4 + + fsl,ssc-modfreq-hz: + description: + The values of modulation frequency (Hz unit) of spread spectrum + clocking for each PLL. + minItems: 1 + maxItems: 4 + + fsl,ssc-modrate-percent: + description: + The percentage values of modulation rate of spread spectrum + clocking for each PLL. + minItems: 1 + maxItems: 4 + + fsl,ssc-modmethod: + $ref: /schemas/types.yaml#/definitions/string-array + description: + The modulation techniques of spread spectrum clocking for + each PLL. + minItems: 1 + maxItems: 4 + items: + enum: + - down-spread + - up-spread + - center-spread + required: - compatible - reg @@ -76,6 +110,11 @@ allOf: - const: clk_ext2 - const: clk_ext3 - const: clk_ext4 + fsl,ssc-clocks: false + fsl,ssc-modfreq-hz: false + fsl,ssc-modrate-percent: false + fsl,ssc-modmethod: false + else: properties: clocks: @@ -101,6 +140,8 @@ additionalProperties: false examples: # Clock Control Module node: - | + #include + clock-controller@30380000 { compatible = "fsl,imx8mm-ccm"; reg = <0x30380000 0x10000>; @@ -109,6 +150,11 @@ examples: <&clk_ext3>, <&clk_ext4>; clock-names = "osc_32k", "osc_24m", "clk_ext1", "clk_ext2", "clk_ext3", "clk_ext4"; + fsl,ssc-clocks = <&clk IMX8MM_AUDIO_PLL1>, + <&clk IMX8MM_VIDEO_PLL1>; + fsl,ssc-modfreq-hz = <6818>, <2419>; + fsl,ssc-modrate-percent = <3>, <7>; + fsl,ssc-modmethod = "down-spread", "center-spread"; }; - |