dt-bindings: net: realtek,rtl82xx: Document realtek,*-ssc-enable property

Document support for spread spectrum clocking (SSC) on RTL8211F(D)(I)-CG,
RTL8211FS(I)(-VS)-CG, RTL8211FG(I)(-VS)-CG PHYs. Introduce DT properties
'realtek,clkout-ssc-enable', 'realtek,rxc-ssc-enable' and
'realtek,sysclk-ssc-enable' which control CLKOUT, RXC and SYSCLK
SSC spread spectrum clocking enablement on these signals. These
clock are not exposed via the clock API, therefore assigned-clock-sscs
property does not apply.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Marek Vasut <marek.vasut@mailbox.org>
Link: https://patch.msgid.link/20260405233008.148974-2-marek.vasut@mailbox.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/Documentation/devicetree/bindings/net/realtek,rtl82xx.yaml b/Documentation/devicetree/bindings/net/realtek,rtl82xx.yaml
index eafcc2f3e3d660b2f2a339eb7dbee97e64e9718c..45033c31a2d51f06ec3b7257259135f63d7e7c3b 100644 (file)
--- a/Documentation/devicetree/bindings/net/realtek,rtl82xx.yaml
+++ b/Documentation/devicetree/bindings/net/realtek,rtl82xx.yaml
@@ -50,6 +50,21 @@ properties:
     description:
       Disable CLKOUT clock, CLKOUT clock default is enabled after hardware reset.
 
+  realtek,clkout-ssc-enable:
+    type: boolean
+    description:
+      Enable CLKOUT SSC mode, CLKOUT SSC mode default is disabled after hardware reset.
+
+  realtek,rxc-ssc-enable:
+    type: boolean
+    description:
+      Enable RXC SSC mode, RXC SSC mode default is disabled after hardware reset.
+
+  realtek,sysclk-ssc-enable:
+    type: boolean
+    description:
+      Enable SYSCLK SSC mode, SYSCLK SSC mode default is disabled after hardware reset.
+
   wakeup-source:
     type: boolean
     description: