| Message ID | 1447684614-25336-1-git-send-email-m.szyprowski@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
W dniu 16.11.2015 o 23:36, Marek Szyprowski pisze: > PDMA for UART devices seems not to be working properly on Exynos 4210 > revision 0 used in Universal C210 boards, so disable it to let one to > use UART devices (driver defaults to PIO mode if DMA is not present). > > Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> > --- > arch/arm/boot/dts/exynos4210-universal_c210.dts | 8 ++++++++ > 1 file changed, 8 insertions(+) > Oh, DMA on UART strikes back. 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/exynos4210-universal_c210.dts b/arch/arm/boot/dts/exynos4210-universal_c210.dts index 81b7ec7..4f5d379 100644 --- a/arch/arm/boot/dts/exynos4210-universal_c210.dts +++ b/arch/arm/boot/dts/exynos4210-universal_c210.dts @@ -560,16 +560,24 @@ &serial_0 { status = "okay"; + /delete-property/dmas; + /delete-property/dma-names; }; &serial_1 { status = "okay"; + /delete-property/dmas; + /delete-property/dma-names; }; &serial_2 { status = "okay"; + /delete-property/dmas; + /delete-property/dma-names; }; &serial_3 { status = "okay"; + /delete-property/dmas; + /delete-property/dma-names; };
PDMA for UART devices seems not to be working properly on Exynos 4210 revision 0 used in Universal C210 boards, so disable it to let one to use UART devices (driver defaults to PIO mode if DMA is not present). Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> --- arch/arm/boot/dts/exynos4210-universal_c210.dts | 8 ++++++++ 1 file changed, 8 insertions(+)