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I don't understand the "maintain > compatibility" in this context. Either you have or you have not clocks, > which should be expressed in schema (: false, see example schema). > Hello Krzysztof, Thanks for pointing this out! I will update both the schema and the commit description. S32V234 does not expose these clocks in its device tree—on this platform the LINFlexD clocks are set up and enabled by U‑Boot, so they are not available to the kernel. The changes in this patch are intended specifically for S32G2/G3, where the clocks are provided in the DT and required by the driver. >> >> Signed-off-by: Radu Pirea >> Co-developed-by: Larisa Grigore >> Signed-off-by: Larisa Grigore >> --- >> .../bindings/serial/fsl,s32-linflexuart.yaml | 18 ++++++++++++++++++ >> 1 file changed, 18 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml b/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml >> index 4171f524a928..885f0b1b3492 100644 >> --- a/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml >> +++ b/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml >> @@ -34,6 +34,14 @@ properties: >> interrupts: >> maxItems: 1 >> >> + clocks: >> + maxItems: 2 >> + >> + clock-names: >> + items: >> + - const: lin >> + - const: ipg >> + >> required: >> - compatible >> - reg >> @@ -48,3 +56,13 @@ examples: >> reg = <0x40053000 0x1000>; >> interrupts = <0 59 4>; >> }; >> + >> + - | >> + serial@401c8000 { >> + compatible = "nxp,s32g2-linflexuart", >> + "fsl,s32v234-linflexuart"; >> + reg = <0x401C8000 0x3000>; >> + interrupts = <0 82 1>; >> + clocks = <&clks 14>, <&clks 13>; >> + clock-names = "lin", "ipg"; > > Just add the clocks to existing example. No need for new example for > each new property. > >> + }; The existing node refers to S32V234 which does not expose any clock properties in its device tree. Because of this, I couldn’t extend that example with clocks and clock-names. The additional example is there only to illustrate the S32G2 case, where the clocks are required and actually present in the device tree. Should I remove it? Best regards, Larisa > > Best regards, > Krzysztof