[PATCH] ARM: dts: exynos5422-odroidxu3*: use peripheral mode for dwc3_1

[PATCH] ARM: dts: exynos5422-odroidxu3*: use peripheral mode for dwc3_1

[Marek Szyprowski]

DWC3 device found on Exynos SoCs cannot work in OTG mode alone, because
it lacks some OTG related control part. OTG mode operation is possible
only with external hardware logic (usually GPIO-based) specific to
the board. Right now, however, there is no driver for such logic and no
bindings, so the OTG mode is disfunctional at all (this means that it
doesn't work as a peripheral nor as a host). This patch sets the operation
mode to peripheral to get DWC3_1 device at least somehow working. This can
be later updated, when proper OTG driver and bindings get developed.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 arch/arm/boot/dts/exynos5422-odroidxu3-lite.dts | 2 +-
 arch/arm/boot/dts/exynos5422-odroidxu3.dts      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3-lite.dts b/arch/arm/boot/dts/exynos5422-odroidxu3-lite.dts
index b1b3608..2ae1cf4 100644
--- a/arch/arm/boot/dts/exynos5422-odroidxu3-lite.dts
+++ b/arch/arm/boot/dts/exynos5422-odroidxu3-lite.dts
@@ -67,5 +67,5 @@
 };
 
 &usbdrd_dwc3_1 {
-	dr_mode = "otg";
+	dr_mode = "peripheral";
 };
diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3.dts b/arch/arm/boot/dts/exynos5422-odroidxu3.dts
index 0c0bbdb..432406d 100644
--- a/arch/arm/boot/dts/exynos5422-odroidxu3.dts
+++ b/arch/arm/boot/dts/exynos5422-odroidxu3.dts
@@ -98,5 +98,5 @@
 };
 
 &usbdrd_dwc3_1 {
-	dr_mode = "otg";
+	dr_mode = "peripheral";
 };
-- 
1.9.2

Re: [PATCH] ARM: dts: exynos5422-odroidxu3*: use peripheral mode for dwc3_1

[Krzysztof Kozlowski]

W dniu 19.11.2015 o 20:51, Marek Szyprowski pisze:
> DWC3 device found on Exynos SoCs cannot work in OTG mode alone, because
> it lacks some OTG related control part. OTG mode operation is possible
> only with external hardware logic (usually GPIO-based) specific to
> the board. Right now, however, there is no driver for such logic and no
> bindings, so the OTG mode is disfunctional at all (this means that it

s/disfunctional/dysfunctional/
(no need to resend, this can be fixed when applying)

> doesn't work as a peripheral nor as a host). This patch sets the operation
> mode to peripheral to get DWC3_1 device at least somehow working. This can
> be later updated, when proper OTG driver and bindings get developed.
> 
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
>  arch/arm/boot/dts/exynos5422-odroidxu3-lite.dts | 2 +-
>  arch/arm/boot/dts/exynos5422-odroidxu3.dts      | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 

Explanation makes sense.

Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

Best regards,
Krzysztof