[PATCH v3 2/4] arm64: dts: ti: k3-j722s-main: Disable "serdes_wiz0" and "serdes_wiz1"

From: Siddharth Vadapalli
Date: Thu Apr 17 2025 - 08:33:35 EST


Since "serdes0" and "serdes1" which are the sub-nodes of "serdes_wiz0"
and "serdes_wiz1" respectively, have been disabled in the SoC file already,
and, given that these sub-nodes will only be enabled in a board file if the
board utilizes any of the SERDES instances and the peripherals bound to
them, we end up in a situation where the board file doesn't explicitly
disable "serdes_wiz0" and "serdes_wiz1". As a consequence of this, the
following errors show up when booting Linux:

wiz bus@f0000:phy@f000000: probe with driver wiz failed with error -12
...
wiz bus@f0000:phy@f010000: probe with driver wiz failed with error -12

To not only fix the above, but also, in order to follow the convention of
disabling device-tree nodes in the SoC file and enabling them in the board
files for those boards which require them, disable "serdes_wiz0" and
"serdes_wiz1" device-tree nodes.

Fixes: 628e0a0118e6 ("arm64: dts: ti: k3-j722s-main: Add SERDES and PCIe support")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Siddharth Vadapalli <s-vadapalli@xxxxxx>
Reviewed-by: Udit Kumar <u-kumar1@xxxxxx>
---

v2 of this patch is at:
https://lore.kernel.org/r/20250408103606.3679505-3-s-vadapalli@xxxxxx/
Changes since v2:
- Collected Reviewed-by tags from Udit Kumar <u-kumar1@xxxxxx>.

Regards,
Siddharth.

arch/arm64/boot/dts/ti/k3-j722s-main.dtsi | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j722s-main.dtsi b/arch/arm64/boot/dts/ti/k3-j722s-main.dtsi
index 6850f50530f1..beda9e40e931 100644
--- a/arch/arm64/boot/dts/ti/k3-j722s-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j722s-main.dtsi
@@ -32,6 +32,8 @@ serdes_wiz0: phy@f000000 {
assigned-clocks = <&k3_clks 279 1>;
assigned-clock-parents = <&k3_clks 279 5>;

+ status = "disabled";
+
serdes0: serdes@f000000 {
compatible = "ti,j721e-serdes-10g";
reg = <0x0f000000 0x00010000>;
@@ -70,6 +72,8 @@ serdes_wiz1: phy@f010000 {
assigned-clocks = <&k3_clks 280 1>;
assigned-clock-parents = <&k3_clks 280 5>;

+ status = "disabled";
+
serdes1: serdes@f010000 {
compatible = "ti,j721e-serdes-10g";
reg = <0x0f010000 0x00010000>;
--
2.34.1