[PATCH v2] ARM: pbab01: allow USB-OTG port runtime configuration

[PATCH v2] ARM: pbab01: allow USB-OTG port runtime configuration

[Andrej Picej]

Since commit a5a4c1d5a3 ("dts: update to v5.13-rc1"), which synced
kernel dts, USB-OTG port on phyFLEX board was set to work only in
peripheral mode. This has to do with phyFLEX baseboard hardware bug,
which prevents correct USB OTG ID pin detection in kernel code.

Unlike linux kernel, barebox doesn't support OTG auto-detection mode via
ID pin. In barebox, user has to select desired USB mode of operation by
setting 'otg.mode' variable. Thus set the 'dr_mode' property to "otg" to
be able to later select USB OTG operating mode at runtime (either host
or peripheral).

Signed-off-by: Andrej Picej <andrej.picej@norik.com>
---
- rather than deleting the dr_mode property, set the property to "otg"
  to explicitly set the mode to OTG
---
 arch/arm/dts/imx6qdl-phytec-pbab01.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/dts/imx6qdl-phytec-pbab01.dtsi b/arch/arm/dts/imx6qdl-phytec-pbab01.dtsi
index 991c7e4fab..88db962535 100644
--- a/arch/arm/dts/imx6qdl-phytec-pbab01.dtsi
+++ b/arch/arm/dts/imx6qdl-phytec-pbab01.dtsi
@@ -15,6 +15,10 @@
 	status = "okay";
 };
 
+&usbotg {
+	dr_mode = "otg";
+};
+
 #ifdef USE_STATE_EXAMPLE
 #include "state-example.dtsi"
 #endif
-- 
2.25.1


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Re: [PATCH v2] ARM: pbab01: allow USB-OTG port runtime configuration

[Sascha Hauer]

On Tue, Apr 19, 2022 at 02:46:59PM +0200, Andrej Picej wrote:
> Since commit a5a4c1d5a3 ("dts: update to v5.13-rc1"), which synced
> kernel dts, USB-OTG port on phyFLEX board was set to work only in
> peripheral mode. This has to do with phyFLEX baseboard hardware bug,
> which prevents correct USB OTG ID pin detection in kernel code.
> 
> Unlike linux kernel, barebox doesn't support OTG auto-detection mode via
> ID pin. In barebox, user has to select desired USB mode of operation by
> setting 'otg.mode' variable. Thus set the 'dr_mode' property to "otg" to
> be able to later select USB OTG operating mode at runtime (either host
> or peripheral).
> 
> Signed-off-by: Andrej Picej <andrej.picej@norik.com>
> ---
> - rather than deleting the dr_mode property, set the property to "otg"
>   to explicitly set the mode to OTG
> ---
>  arch/arm/dts/imx6qdl-phytec-pbab01.dtsi | 4 ++++
>  1 file changed, 4 insertions(+)

Applied, thanks

Sascha

> 
> diff --git a/arch/arm/dts/imx6qdl-phytec-pbab01.dtsi b/arch/arm/dts/imx6qdl-phytec-pbab01.dtsi
> index 991c7e4fab..88db962535 100644
> --- a/arch/arm/dts/imx6qdl-phytec-pbab01.dtsi
> +++ b/arch/arm/dts/imx6qdl-phytec-pbab01.dtsi
> @@ -15,6 +15,10 @@
>  	status = "okay";
>  };
>  
> +&usbotg {
> +	dr_mode = "otg";
> +};
> +
>  #ifdef USE_STATE_EXAMPLE
>  #include "state-example.dtsi"
>  #endif
> -- 
> 2.25.1
> 
> 
> _______________________________________________
> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox
> 

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