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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>

authored by

Marek Vasut and committed by
Jakub Kicinski bfb859a5 4de7a8ac

+15
+15
Documentation/devicetree/bindings/net/realtek,rtl82xx.yaml
··· 50 50 description: 51 51 Disable CLKOUT clock, CLKOUT clock default is enabled after hardware reset. 52 52 53 + realtek,clkout-ssc-enable: 54 + type: boolean 55 + description: 56 + Enable CLKOUT SSC mode, CLKOUT SSC mode default is disabled after hardware reset. 57 + 58 + realtek,rxc-ssc-enable: 59 + type: boolean 60 + description: 61 + Enable RXC SSC mode, RXC SSC mode default is disabled after hardware reset. 62 + 63 + realtek,sysclk-ssc-enable: 64 + type: boolean 65 + description: 66 + Enable SYSCLK SSC mode, SYSCLK SSC mode default is disabled after hardware reset. 67 + 53 68 wakeup-source: 54 69 type: boolean 55 70 description: