Subject: [linux-sunxi] Re: [PATCH] ARM: dts: sun8i-h3-orangepi-plus: Enable USB host controllers

From: [email-masked] (Hans de Goede)
Date: Tue, 24 Nov 2015 09:50:01 +0100

Hi,

On 23-11-15 23:20, Troy Dack wrote:
>
>
> On Wednesday, 18 November 2015 03:12:11 UTC+11, Jens Kuske wrote:
>>
>> Enable the 2 USB host controllers used on the Orange Pi Plus
>> and add the necessary regulators.
>>
>> Signed-off-by: Reinder de Haan <[email-masked] <javascript:>>
>> Signed-off-by: Hans de Goede <[email-masked] <javascript:>>
>> Signed-off-by: Jens Kuske <[email-masked] <javascript:>>
>> ---
>>
>> Hi Hans,
>>
>> with these regulators USB works on the Orange Pi Plus too.
>> I don't know if adding the regulators in the dts is okay, since most
>> regulators are defined in the sunxi-common-regulators.dtsi, but
>> we use different pins.
>>
>> Jens
>>
>>
>>   arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts | 44
>> ++++++++++++++++++++++++++++
>>   1 file changed, 44 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts
>> b/arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts
>> index e67df59..1cb6c66 100644
>> --- a/arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts
>> +++ b/arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts
>> @@ -58,6 +58,35 @@
>>           chosen {
>>                   stdout-path = "serial0:115200n8";
>>           };
>> +
>> +        reg_usb3_vbus: usb3-vbus {
>> +                compatible = "regulator-fixed";
>> +                pinctrl-names = "default";
>> +                pinctrl-0 = <&usb3_vbus_pin_a>;
>> +                regulator-name = "usb3-vbus";
>> +                regulator-min-microvolt = <5000000>;
>> +                regulator-max-microvolt = <5000000>;
>> +                regulator-boot-on;
>> +                enable-active-high;
>> +                gpio = <&pio 6 11 GPIO_ACTIVE_HIGH>;
>> +        };
>> +};
>> +
>> +&ehci1 {
>> +        status = "okay";
>> +};
>> +
>> +&ehci3 {
>> +        status = "okay";
>> +};
>> +
>> +&pio {
>> +        usb3_vbus_pin_a: usb3_vbus_pin at 0 {
>> +                allwinner,pins = "PG11";
>> +                allwinner,function = "gpio_out";
>> +                allwinner,drive = <SUN4I_PINCTRL_10_MA>;
>> +                allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
>> +        };
>>   };
>>
>>   &mmc0 {
>> @@ -70,8 +99,23 @@
>>           status = "okay";
>>   };
>>
>> +&reg_usb1_vbus {
>> +        gpio = <&pio 6 13 GPIO_ACTIVE_HIGH>;
>> +        status = "okay";
>> +};
>> +
>>   &uart0 {
>>           pinctrl-names = "default";
>>           pinctrl-0 = <&uart0_pins_a>;
>>           status = "okay";
>>   };
>> +
>> +&usb1_vbus_pin_a {
>> +        allwinner,pins = "PG13";
>> +};
>> +
>> +&usbphy {
>> +        usb1_vbus-supply = <&reg_usb1_vbus>;
>> +        usb3_vbus-supply = <&reg_usb3_vbus>;
>> +        status = "okay";
>> +};
>>
>
> I've been trying to test these patches by using Hans' github sunxi-wip
> branches of the kernel and U-Boot.
>
> U-Boot at commit 7e17fd2 "suxni: Add support for Orangepi Plus and Orangepi
> PC boards"
> Kernel at commit cb45b8  "ARM: dts: sun8i-h3-orangepi-plus: Enable USB host
> controllers"
>
> Both have been built using the default defconfig for an OrangePi Plus
>
> U-Boot starts and successfully boots the kernel, but the kernel does not
> appear to boot fully and hangs at:
>
> [    0.861175] cpu cpu0: failed to get cpu0 clock: -2
> [    0.865973] cpufreq-dt: probe of cpufreq-dt failed with error -2
> [    0.872017] Registering SWP/SWPB emulation handler
>
> Full boot log: http://pastebin.com/VGkEix9p
>
> Building the kernel (or just using a dab) with the dts from commit 0a8c01
> "ARM: dts: sun8i: Add Orange Pi Plus support" results in the kernel booting
> fully to a login prompt.  Of course without enabled/working USB.
>
> There is a fair chance I've done something wrong that is causing this.  Any
> advice on how to get a bootable kernel?

Weird, are you sure you updated both the dtb and [u|z]image at the same time ?

I'm using this kernel config:
https://fedorapeople.org/~jwrdegoede/kernel-driver-programming/kernel-config

With that everything you need is builtin, no need to build modules.

Regards,

Hans