A device tree binding for the Microchip USB5744 hub controller
was added in commit 02be19e914b8 ("dt-bindings: usb: Add support
for Microchip usb5744 hub controller").
U-Boot will consume this binding in order to perform the
necessary actions to enable the USB hub ports over I2C.
(We previously used our own out-of-tree driver for
this task)
The Ten64 board does not have any switchable supplies
for the voltage rails utilized by the USB5744, so a
pair of dummy supplies have been added to facilitate
operation with U-Boot's hub driver.
Signed-off-by: Mathew McBride <matt@xxxxxxxxxxxxxxx>
---
.../boot/dts/freescale/fsl-ls1088a-ten64.dts | 45 +++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1088a-ten64.dts b/arch/arm64/boot/dts/freescale/fsl-ls1088a-ten64.dts
index bc0d89427fbe5..fc15c83d222f6 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1088a-ten64.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1088a-ten64.dts
@@ -87,6 +87,22 @@ sfp_xg1: dpmac1-sfp {
los-gpios = <&sfpgpio 7 GPIO_ACTIVE_HIGH>;
maximum-power-milliwatt = <2000>;
};
+
+ usb1v2_supply: regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "usbhub_1v2";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-always-on;
+ };
+
+ system3v3_supply: regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "system_3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
};
/* XG1 - Upper SFP */
@@ -231,6 +247,12 @@ at97sc: tpm@29 {
compatible = "atmel,at97sc3204t";
reg = <0x29>;
};
+
+ usbhub: usb-hub@2d {
+ compatible = "microchip,usb5744";
+ reg = <0x2d>;
+ };
+
};
&i2c2 {
@@ -378,10 +400,33 @@ partition@9400000 {
};
};
+/* LS1088A USB Port 0 - direct to bottom USB-A port */
&usb0 {
status = "okay";
};
+/* LS1088A USB Port 1 - to Microchip USB5744 USB Hub */
&usb1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
status = "okay";
+
+ hub_2_0: hub@1 {
+ compatible = "usb424,2744";
+ reg = <1>;
+ peer-hub = <&hub_3_0>;
+ i2c-bus = <&usbhub>;
+ vdd-supply = <&system3v3_supply>;
+ vdd2-supply = <&usb1v2_supply>;
+ };
+
+ hub_3_0: hub@2 {
+ compatible = "usb424,5744";
+ reg = <2>;
+ peer-hub = <&hub_2_0>;
+ i2c-bus = <&usbhub>;
+ vdd-supply = <&system3v3_supply>;
+ vdd2-supply = <&usb1v2_supply>;
+ };
};
--
2.45.1
