[PATCH v2 05/13] arm64: dts: ti: k3-am68-phyboard-izar: fix USB clocking for compliance

Siddharth Vadapalli
2026-05-06T14:09:11Z

Fixes: 8bc3b1c86452 ("arm64: dts: ti: Add basic support for phyBOARD-Izar-AM68x")
Cc: <stable@vger.kernel.org>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
---

v1:
https://lore.kernel.org/r/20260505110631.1144200-6-s-vadapalli@ti.com/
No changes since v1.

arch/arm64/boot/dts/ti/k3-am68-phyboard-izar.dts | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am68-phyboard-izar.dts b/arch/arm64/boot/dts/ti/k3-am68-phyboard-izar.dts
index 225fe7a7803b..d9b61e426ff8 100644
--- a/arch/arm64/boot/dts/ti/k3-am68-phyboard-izar.dts
+++ b/arch/arm64/boot/dts/ti/k3-am68-phyboard-izar.dts
@@ -505,6 +505,14 @@ &serdes_refclk {
clock-frequency = <100000000>;
};

+&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 */
+};
+
&serdes0 {
status = "okay";

@@ -522,6 +530,7 @@ serdes0_usb_link: phy@1 {
#phy-cells = <0>;
resets = <&serdes_wiz0 2>;