| Message ID | 1447933882-3030-1-git-send-email-m.szyprowski@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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"; };
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(-)