[PATCH v2 08/13] arm64: dts: ti: k3-am69-sk: fix USB clocking for compliance

Siddharth Vadapalli
2026-05-06T14:09:32Z

Fixes: ff7b5e93f16a ("arm64: dts: ti: k3-am69-sk: Add USB SuperSpeed support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
---

v1:
https://lore.kernel.org/r/20260505110631.1144200-9-s-vadapalli@ti.com/
Changes since v1:
- Reordered properties in serdes_wiz0 node to place status at the end.

arch/arm64/boot/dts/ti/k3-am69-sk.dts | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am69-sk.dts b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
index e56772a334c5..afd809104d1b 100644
--- a/arch/arm64/boot/dts/ti/k3-am69-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
@@ -970,6 +970,11 @@ &serdes_ln_ctrl {
};

&serdes_wiz0 {
+ ti,core-clk-sel = <1>; /* Select internal reference clock */
+ ti,ssc-enable; /* Enable SSC */
+ ti,ssc-type = <1>; /* 1 for Downspread */
+ ti,ssc-frequency-hz = <33000>; /* 33 KHz */
+ ti,ssc-depth-per-mil = <5>; /* 0.5% depth */
status = "okay";
};

@@ -997,6 +1002,7 @@ serdes0_usb_link: phy@3 {
cdns,num-lanes = <1>;
#phy-cells = <0>;
cdns,phy-type = <PHY_TYPE_USB3>;
+ cdns,ssc-mode = <2>; /* 2 for internal SSC */
resets = <&serdes_wiz0 4>;
};
};
--
2.51.1