ARM: dts: exynos4210-universal_c210: disable DMA for UARTs

Message ID 1447684614-25336-1-git-send-email-m.szyprowski@samsung.com
State New
Headers show

Commit Message

Marek Szyprowski Nov. 16, 2015, 2:36 p.m.
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(+)

-- 
1.9.2

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Patch

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;
 };