Hi Nishanth,

On 13/05/21 1:10 am, Nishanth Menon wrote:

On 20:31-20210512, Kishon Vijay Abraham I wrote:

quoted

Enable USB Super-Speed HOST port.

Signed-off-by: Kishon Vijay Abraham I <redacted>
Signed-off-by: Aswath Govindraju <redacted>
---
 arch/arm64/boot/dts/ti/k3-am642-sk.dts | 39 ++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 8424cd071955..056c1b2df559 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts

@@ -5,6 +5,8 @@
 
 /dts-v1/;
 
+#include <dt-bindings/mux/ti-serdes.h>
+#include <dt-bindings/phy/phy.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/net/ti-dp83867.h>
 #include "k3-am642.dtsi"

@@ -85,6 +87,12 @@
 		>;
 	};
 
+	main_usb0_pins_default: main-usb0-pins-default {
+		pinctrl-single,pins = <
+			AM64X_IOPAD(0x02a8, PIN_OUTPUT, 0) /* (E19) USB0_DRVVBUS */
+		>;
+	};
+
 	main_i2c1_pins_default: main-i2c1-pins-default {
 		pinctrl-single,pins = <
 			AM64X_IOPAD(0x0268, PIN_INPUT_PULLUP, 0) /* (C18) I2C1_SCL */

@@ -235,6 +243,37 @@
 	disable-wp;
 };
 
+&serdes_ln_ctrl {
+	idle-states = <AM64_SERDES0_LANE0_USB>;
+};
+
+&serdes_wiz0 {
+	status = "okay";

not sure I understand why default of okay needs to be explicitly stated
as okay in board dts.

hmm, not required. Will remove it.

Thanks
Kishon