Re: [PATCH 2/2] ARM: dts: kswitch-d10: enable the USB device port

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Am 2022-07-07 11:18, schrieb Claudiu.Beznea@xxxxxxxxxxxxx:
On 06.07.2022 11:57, Michael Walle wrote:
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Hi Claudiu,

Am 2022-07-06 10:41, schrieb Claudiu.Beznea@xxxxxxxxxxxxx:
On 05.07.2022 16:06, Michael Walle wrote:
EXTERNAL EMAIL: Do not click links or open attachments unless you know
the content is safe

Now that there is driver support for the USB device, enable it.

Signed-off-by: Michael Walle <michael@xxxxxxxx>
---
 arch/arm/boot/dts/lan966x-kontron-kswitch-d10-mmt.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/boot/dts/lan966x-kontron-kswitch-d10-mmt.dtsi
b/arch/arm/boot/dts/lan966x-kontron-kswitch-d10-mmt.dtsi
index 5a6c5f7c371a..d0d26e136c38 100644
--- a/arch/arm/boot/dts/lan966x-kontron-kswitch-d10-mmt.dtsi
+++ b/arch/arm/boot/dts/lan966x-kontron-kswitch-d10-mmt.dtsi
@@ -200,6 +200,11 @@ &switch {
        status = "okay";
 };

+&udc {
+       atmel,vbus-gpio = <&gpio 66 GPIO_ACTIVE_HIGH>;

Can you also add pinctrl to avoid issues described in:

Do I need a pinctrl node even if I just use it as a gpio?
Isn't that handled automatically by the
.gpio_request_enable op?

I cannot say for sure.

Looking a bit though it I think the issue described in commit I pointed may
come from the fact that struct gpio_chip::request may be
gpiochip_generic_request() which may return 0 in case
list_empty(&gc->gpiodev->pin_ranges) is true. The commit that I pointed was
introduced after commit 2ab73c6d8323 ("gpio: Support GPIO controllers
without pin-ranges") but I don't have more knowledge on it.


I'll just add it :) Thanks!

-michael



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