[linux-sunxi] [PATCH v3 5/5] ARM: dts: sun8i: h2+: enable USB OTG for Orange Pi Zero board

On Wed, Mar 15, 2017 at 5:09 PM, Icenowy Zheng [off-list ref] wrote:

2017?3?15? 15:16? Chen-Yu Tsai [off-list ref]???

quoted

Hi,

On Tue, Mar 7, 2017 at 6:34 AM, Icenowy Zheng [off-list ref] wrote:

quoted

Orange Pi Zero board features a USB OTG port, which has a ID pin, and
can be used to power up the board. However, even if the board is powered
via +5V pin in GPIO/expansion headers, the VBUS in the OTG port cannot
be powered up, thus it's impossible to use it in host mode with simple
OTG cables.

Add support for it in peripheral mode.

If someone really want to use it in host mode, the mode of PHY can be
switch via sysfs, then use a powered USB OTG cable or powered USB HUB to
power up external USB devices.

Signed-off-by: Icenowy Zheng <redacted>
---
New patch in v3.

 arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
index b7ca916d871d..63f819394b98 100644
--- a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
+++ b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts

@@ -96,6 +96,10 @@
        };
 };

+&ehci0 {
+       status = "okay";
+};
+
 &ehci1 {
        status = "okay";
 };

@@ -132,6 +136,10 @@
        bias-pull-up;
 };

+&ohci0 {
+       status = "okay";
+};
+
 &ohci1 {
        status = "okay";
 };

@@ -154,7 +162,13 @@
        status = "disabled";
 };

+&usb_otg {
+       dr_mode = "peripheral";
+       status = "okay";
+};
+
 &usbphy {
        /* USB VBUS is always on */

This comment does not match your commit message, which says it's always off.

Oh I should say "USB Type-A port VBUS".

Yes you should probably update that comment, and also mention the OTG port's
VBUS is always off.

ChenYu

quoted

ChenYu

quoted

        status = "okay";
+       usb0_id_det-gpios = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
 };
--
2.11.1

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