On Thu, Feb 29, 2024 at 02:47:24PM +0100, Christophe Roullier wrote: > Add property st,ext-phyclk to manage cases when PHY have no cristal/quartz > This property can be used with RMII phy without cristal 50Mhz and when we > want to select RCC clock instead of ETH_REF_CLK > Can be used also with RGMII phy with no cristal and we select RCC clock > instead of ETH_CLK125 > This new property replace st,eth-clk-sel and st,eth-ref-clk-sel That is obvious from the diff. What is not obvious is why we need a new property and what is the problem with the existing ones. > > Signed-off-by: Christophe Roullier <christophe.roullier@xxxxxxxxxxx> > --- > Documentation/devicetree/bindings/net/stm32-dwmac.yaml | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/Documentation/devicetree/bindings/net/stm32-dwmac.yaml b/Documentation/devicetree/bindings/net/stm32-dwmac.yaml > index 80937b28fa046..fda23c07c1cad 100644 > --- a/Documentation/devicetree/bindings/net/stm32-dwmac.yaml > +++ b/Documentation/devicetree/bindings/net/stm32-dwmac.yaml > @@ -85,12 +85,21 @@ properties: > phy-supply: > description: PHY regulator > > + st,ext-phyclk: > + description: > + set this property in RMII mode when you have PHY without crystal 50MHz and want to > + select RCC clock instead of ETH_REF_CLK. OR in RGMII mode when you want to select > + RCC clock instead of ETH_CLK125. > + type: boolean > + > st,eth-clk-sel: > + deprecated: true > description: > set this property in RGMII PHY when you want to select RCC clock instead of ETH_CLK125. > type: boolean > > st,eth-ref-clk-sel: > + deprecated: true > description: > set this property in RMII mode when you have PHY without crystal 50MHz and want to > select RCC clock instead of ETH_REF_CLK. > -- > 2.25.1 >
