[PATCH v6 0/1] riscv: dts: starfive: jh7110-milkv-mars: enable usb0 host function

[PATCH v6 0/1] riscv: dts: starfive: jh7110-milkv-mars: enable usb0 host function

[E Shattow]

Enable host mode JH7110 on-chip USB for Milk-V Mars by setting host mode
and connect vbus pinctrl.

This functionality depends on setting the USB over-current register to 
disable at bootloader phase, for example U-Boot:
https://patchwork.ozlabs.org/project/uboot/patch/20241012031328.4268-6-minda.chen@starfivetech.com/

If the over-current register is not prepared for us then the result is no 
change in functional outcome with this patch applied; there is an error 
visible to the user and this additional usb configuration fails (same as
it is now). On Milk-V Mars with four USB-A ports this applies to one of the 
USB-A ports and the remaining three VL805-connected USB-A ports via PCIe are 
not changed.

Changes since v5:
 - Rebase on latest master
 - Addtional detail to commit description

Changes since v4:
 - Rebase on latest master

Changes since v3:
 - Rebase on linux-next/master
 - use tabs for code indent

Changes since v2:
 - Rebase on 6.12

E Shattow (1):
  riscv: dts: starfive: jh7110-milkv-mars: enable usb0 host function

 .../boot/dts/starfive/jh7110-milkv-mars.dts    | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

-- 
2.45.2

[PATCH v6 1/1] riscv: dts: starfive: jh7110-milkv-mars: enable usb0 host function

[E Shattow]

Milk-V Mars board routes one of four USB-A ports to USB0 on the SoC
rather than to the VL805 USB 3.0 <-> PCIe chip.
Set JH7110 on-chip USB host mode and vbus pin assignment accordingly.

Reviewed-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Signed-off-by: E Shattow <e@freeshell.de>
---
 .../boot/dts/starfive/jh7110-milkv-mars.dts    | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dts b/arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dts
index 0d248b671d4b..3bd62ab78523 100644
--- a/arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dts
+++ b/arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dts
@@ -53,7 +53,23 @@ &spi0 {
 	status = "okay";
 };
 
+&sysgpio {
+	usb0_pins: usb0-0 {
+		vbus-pins {
+			pinmux = <GPIOMUX(25, GPOUT_SYS_USB_DRIVE_VBUS,
+					      GPOEN_ENABLE,
+					      GPI_NONE)>;
+			bias-disable;
+			input-disable;
+			input-schmitt-disable;
+			slew-rate = <0>;
+		};
+	};
+};
+
 &usb0 {
-	dr_mode = "peripheral";
+	dr_mode = "host";
+	pinctrl-names = "default";
+	pinctrl-0 = <&usb0_pins>;
 	status = "okay";
 };
-- 
2.45.2

Re: [PATCH v6 0/1] riscv: dts: starfive: jh7110-milkv-mars: enable usb0 host function

[Conor Dooley]

From: Conor Dooley <conor.dooley@microchip.com>

On Wed, 27 Nov 2024 07:49:22 -0800, E Shattow wrote:
> Enable host mode JH7110 on-chip USB for Milk-V Mars by setting host mode
> and connect vbus pinctrl.
> 
> This functionality depends on setting the USB over-current register to
> disable at bootloader phase, for example U-Boot:
> https://patchwork.ozlabs.org/project/uboot/patch/20241012031328.4268-6-minda.chen@starfivetech.com/
> 
> [...]

Applied to riscv-dt-for-next, thanks!

[1/1] riscv: dts: starfive: jh7110-milkv-mars: enable usb0 host function
      https://git.kernel.org/conor/c/708d55db3edb

Thanks,
Conor.