TWxSoftware/twx-linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

arm64: dts: freescale: ten64: add usb hub definition

Browse Source 
A device tree binding for the Microchip USB5744 hub controller
was added in commit 02be19e914 ("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@traverse.com.au>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Mathew McBride
2025-03-05 11:19:01 +11:00
committed by Shawn Guo
parent 9e87325a9c
commit 556d6be6f2
1 changed files with 44 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/arm64/boot/dts/freescale/fsl-ls1088a-ten64.dts
+44
View File
@@ -87,6 +87,22 @@
los-gpios = <&sfpgpio 7 GPIO_ACTIVE_HIGH>;
maximum-power-milliwatt = <2000>;
};
usb1v2_supply: regulator-usbhub-1v2 {
compatible = "regulator-fixed";
regulator-name = "usbhub_1v2";
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1200000>;
regulator-always-on;
};
system3v3_supply: regulator-system-3v3 {
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 @@
compatible = "atmel,at97sc3204t";
reg = <0x29>;
};
usbhub: usb-hub@2d {
compatible = "microchip,usb5744";
reg = <0x2d>;
};
};
&i2c2 {
@@ -378,10 +400,32 @@
};
};
/* 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>;
};
};