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On 03/11/2026 05:48, Frank Li wrote: > [ EXTERNAL EMAIL ] > > On Mon, Nov 02, 2026 at 07:05:40PM +0800, Junyi Zhao wrote: >> Amlogic A9 SoCs integrate the Silvaco I3C IP with two controller >> instances: >> >> - amlogic,a9-i3c for the EE domain, which takes two clocks, >> "pclk" and "fast_clk" like the NXP variants; >> >> - amlogic,a9-ao-i3c for the Always-On (AO) domain, which exposes >> only "pclk": its bus clock is generated by an internal divider >> located in the controller's own register space. >> >> Allow both compatibles with the "silvaco,i3c-master-v1" fallback and >> enforce the per-variant clock counts. >> >> Signed-off-by: Junyi Zhao >> --- >> .../bindings/i3c/silvaco,i3c-master.yaml | 24 ++++++++++++++++++++-- >> 1 file changed, 22 insertions(+), 2 deletions(-) >> >> diff --git a/Documentation/devicetree/bindings/i3c/silvaco,i3c-master.yaml b/Documentation/devicetree/bindings/i3c/silvaco,i3c-master.yaml >> index 853092f75..de1fdec65 100644 >> --- a/Documentation/devicetree/bindings/i3c/silvaco,i3c-master.yaml >> +++ b/Documentation/devicetree/bindings/i3c/silvaco,i3c-master.yaml >> @@ -19,6 +19,8 @@ properties: >> - enum: >> - nxp,imx94-i3c >> - nxp,imx95-i3c >> + - amlogic,a9-i3c >> + - amlogic,a9-ao-i3c >> - const: silvaco,i3c-master-v1 > > You have drvdata for it. Needn't fallback to silvaco,i3c-master-v1 will move it. follows nuvoton,npcm845-i3c. > Frank >> >> reg: >> @@ -28,14 +30,14 @@ properties: >> maxItems: 1 >> >> clocks: >> - minItems: 2 >> + minItems: 1 >> items: >> - description: system clock >> - description: bus clock >> - description: other (slower) events clock >> >> clock-names: >> - minItems: 2 >> + minItems: 1 >> items: >> - const: pclk >> - const: fast_clk >> @@ -72,12 +74,30 @@ allOf: >> enum: >> - nxp,imx94-i3c >> - nxp,imx95-i3c >> + - amlogic,a9-i3c >> then: >> properties: >> clocks: >> + minItems: 2 >> maxItems: 2 >> clock-names: >> + minItems: 2 >> maxItems: 2 >> + - if: >> + properties: >> + compatible: >> + contains: >> + const: amlogic,a9-ao-i3c >> + then: >> + properties: >> + clocks: >> + maxItems: 1 >> + description: >> + The "ao" variant is the controller instance in the Always-On (AO) >> + domain, which has no separate bus clock and derives the >> + bus clock from an internal divider. >> + clock-names: >> + maxItems: 1 >> >> unevaluatedProperties: false >> >> >> -- >> 2.42.0 >>