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ARM: dts: sun8i: Fix power for USB Ethernet controller

Message ID 20171228125222.12942-1-hauke@hauke-m.de (mailing list archive)
State New, archived
Headers show

Commit Message

Hauke Mehrtens Dec. 28, 2017, 12:52 p.m. UTC 
The RTL8152B USB controller needs a 3.3 volt power supply which is
controlled by PAD20. Without this patch Linux will not see that there is
a device connected to the USB bus and the 2. USB port will not work.

I do not of a better solution to add a regulator to a USB device.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
 arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Comments

Icenowy Zheng Dec. 28, 2017, 1:01 p.m. UTC | #1 
在 2017年12月28日星期四 CST 下午8:52:22，Hauke Mehrtens 写道：
> The RTL8152B USB controller needs a 3.3 volt power supply which is
> controlled by PAD20. Without this patch Linux will not see that there is
> a device connected to the USB bus and the 2. USB port will not work.
> 
> I do not of a better solution to add a regulator to a USB device.

I have one.

Please check the patch I will send you soon.

> 
> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
> ---
>  arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dts | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dts
> b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dts index
> 32a6d312422e..1d5db0e0bd12 100644
> --- a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dts
> +++ b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dts
> @@ -47,13 +47,15 @@
>  	model = "Xunlong Orange Pi R1";
>  	compatible = "xunlong,orangepi-r1", "allwinner,sun8i-h2-plus";
> 
> -	/delete-node/ reg_vcc_wifi;
> -
>  	aliases {
>  		ethernet1 = &rtl8189etv;
>  	};
>  };
> 
> +&reg_vcc_wifi {
> +	regulator-always-on;
> +};
> +
>  &ohci1 {
>  	/*
>  	 * RTL8152B USB-Ethernet adapter is connected to USB1,
diff mbox

Patch

diff --git a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dts b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dts
index 32a6d312422e..1d5db0e0bd12 100644
--- a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dts
+++ b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dts
@@ -47,13 +47,15 @@ 
 	model = "Xunlong Orange Pi R1";
 	compatible = "xunlong,orangepi-r1", "allwinner,sun8i-h2-plus";
 
-	/delete-node/ reg_vcc_wifi;
-
 	aliases {
 		ethernet1 = &rtl8189etv;
 	};
 };
 
+&reg_vcc_wifi {
+	regulator-always-on;
+};
+
 &ohci1 {
 	/*
 	 * RTL8152B USB-Ethernet adapter is connected to USB1,