[PATCH] ARM: dts: rockchip: Add DMA tx and rx channels in UART interfaces for RK3288 SoCs
From: romain.perier@gmail.com (Romain Perier)
Date: 2015-06-16 17:19:26
Also in:
linux-devicetree, linux-rockchip
Subsystem:
the rest · Maintainer:
Linus Torvalds
This enable DMA capability for the corresponding UART interfaces, also it removes
warning "ttyS%d - Failed to request dma" from kernel logs.
Signed-off-by: Romain Perier <romain.perier@gmail.com>
---
Changes since v1 ("[PATCH] ARM: dts: rockchip: Add dmac_bus rx and tx for uart2"):
- Add DMA tx and rx channels for all UART interfaces
- Rename commit summary
arch/arm/boot/dts/rk3288.dtsi | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 22316d0..1996452 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi@@ -359,6 +359,8 @@ clock-names = "baudclk", "apb_pclk"; pinctrl-names = "default"; pinctrl-0 = <&uart0_xfer>; + dmas = <&dmac_peri 1>, <&dmac_peri 2>; + dma-names = "tx", "rx"; status = "disabled"; };
@@ -372,6 +374,8 @@ clock-names = "baudclk", "apb_pclk"; pinctrl-names = "default"; pinctrl-0 = <&uart1_xfer>; + dmas = <&dmac_peri 3>, <&dmac_peri 4>; + dma-names = "tx", "rx"; status = "disabled"; };
@@ -385,6 +389,8 @@ clock-names = "baudclk", "apb_pclk"; pinctrl-names = "default"; pinctrl-0 = <&uart2_xfer>; + dmas = <&dmac_bus_s 4>, <&dmac_bus_s 5>; + dma-names = "tx", "rx"; status = "disabled"; };
@@ -398,6 +404,8 @@ clock-names = "baudclk", "apb_pclk"; pinctrl-names = "default"; pinctrl-0 = <&uart3_xfer>; + dmas = <&dmac_peri 7>, <&dmac_peri 8>; + dma-names = "tx", "rx"; status = "disabled"; };
@@ -411,6 +419,8 @@ clock-names = "baudclk", "apb_pclk"; pinctrl-names = "default"; pinctrl-0 = <&uart4_xfer>; + dmas = <&dmac_peri 9>, <&dmac_peri 10>; + dma-names = "tx", "rx"; status = "disabled"; };
--
1.9.1