| Message ID | 20230313225103.30512-6-Sergey.Semin@baikalelectronics.ru |
|---|---|
| State | New |
| Headers | show |
| Series | dt-bindings: net: dwmac: Extend clocks, props desc and constraints | expand |
On 13/03/2023 23:50, Serge Semin wrote: > The property is utilized to set the CSR-MDC clock selector in the STMMAC > driver. The specified value is used instead of auto-detecting the > CSR/application clocks divider based on the reference clock rate. Let's > add a more detailed description to clarify the property purpose and > permitted values. In the later case the constraints are specified based on > the DW *MAC CR registers permitted values. > > Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> > --- > Documentation/devicetree/bindings/net/snps,dwmac.yaml | 10 +++++ Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml index 224f8f70db85..edef405766e4 100644 --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml @@ -427,7 +427,15 @@ properties: snps,clk-csr: $ref: /schemas/types.yaml#/definitions/uint32 description: - Frequency division factor for MDC clock. + CSR-MDC clock selector. It sets up a divider of the CSR/application + clock to create an MDC signal with desired frequency. Note the + property value doesn't specify the divider itself by encodes the + corresponding divider value specific to the IP-core. + DW GMAC 0 - 42, 1 - 62, 2 - 16, 3 - 26, 4 - 102, 5 - 124, 8 - 4, + 9 - 6, 10 - 8, 11 - 10, 12 - 12, 13 - 14, 14 - 16, 15 - 18. + DW xGMAC 0 - 62, 1 - 102, 2 - 122, 3 - 142, 4 - 162, 5 - 202. + minimum: 0 + maximum: 15 mdio: $ref: mdio.yaml#
The property is utilized to set the CSR-MDC clock selector in the STMMAC driver. The specified value is used instead of auto-detecting the CSR/application clocks divider based on the reference clock rate. Let's add a more detailed description to clarify the property purpose and permitted values. In the later case the constraints are specified based on the DW *MAC CR registers permitted values. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> --- Documentation/devicetree/bindings/net/snps,dwmac.yaml | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)