Re: [PATCH net-next 1/3] dt-bindings: net: rockchip-dwmac: Add 25M refout clock

On Thu, Jul 30, 2026 at 4:27 PM Krzysztof Kozlowski [off-list ref] wrote:

On Mon, Jul 27, 2026 at 10:10:45AM +0800, Gavin Gao wrote:

quoted

Some Rockchip GMAC instances can provide a 25 MHz reference clock output
for an external RGMII PHY.

Add a clock name for this 25 MHz reference output so SoC dtsi files can
describe it separately from the existing MAC reference clocks.

Signed-off-by: Gavin Gao <redacted>
---
 Documentation/devicetree/bindings/net/rockchip-dwmac.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/net/rockchip-dwmac.yaml b/Documentation/devicetree/bindings/net/rockchip-dwmac.yaml
index 0ac7c4b47d6b..074ac274f2e0 100644
--- a/Documentation/devicetree/bindings/net/rockchip-dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/rockchip-dwmac.yaml

@@ -81,6 +81,7 @@ properties:
         - pclk_mac
         - clk_mac_ref
         - clk_mac_refout
+        - clk_mac_25m_refout

That's the same as clk_mac_ref and clk_mac_refout. clocks are not
outputs but inputs, so explain how does the device take three SAME
clocks: clk_mac_ref, clk_mac_refout and clk_mac_25m_refout?

Best regards,
Krzysztof

This is not the existing clk_mac_refout clock. On RK3576 the
REFCLKO25M_GMAC[01]_OUT clocks are separate 25 MHz reference clock outputs
intended for RGMII PHYs, while clk_mac_refout is the existing refout clock
used by the Rockchip DWMAC binding for the RMII reference output path.

-- 
Best Regards,
Gavin Gao