* [PATCH] ARM: dts: rockchip: use DMA channels for UARTs for RK3288
@ 2020-03-15 9:51 Katsuhiro Suzuki
2020-03-17 0:26 ` Heiko Stuebner
0 siblings, 1 reply; 2+ messages in thread
From: Katsuhiro Suzuki @ 2020-03-15 9:51 UTC (permalink / raw)
To: Heiko Stuebner, linux-rockchip
Cc: linux-arm-kernel, linux-kernel, Katsuhiro Suzuki
This patch enables to use DMAC for all UARTs that are connected to
dmac_peri core for Rochchip RK3288.
Only uart2 is connected different DMAC (dmac_bus_s) so keep current
settings on this patch.
Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
---
arch/arm/boot/dts/rk3288.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 8bcb4a51682e..e9f8a44f5f2a 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -420,6 +420,8 @@ uart0: serial@ff180000 {
reg-io-width = <4>;
clocks = <&cru SCLK_UART0>, <&cru PCLK_UART0>;
clock-names = "baudclk", "apb_pclk";
+ dmas = <&dmac_peri 1>, <&dmac_peri 2>;
+ dma-names = "tx", "rx";
pinctrl-names = "default";
pinctrl-0 = <&uart0_xfer>;
status = "disabled";
@@ -433,6 +435,8 @@ uart1: serial@ff190000 {
reg-io-width = <4>;
clocks = <&cru SCLK_UART1>, <&cru PCLK_UART1>;
clock-names = "baudclk", "apb_pclk";
+ dmas = <&dmac_peri 3>, <&dmac_peri 4>;
+ dma-names = "tx", "rx";
pinctrl-names = "default";
pinctrl-0 = <&uart1_xfer>;
status = "disabled";
@@ -459,6 +463,8 @@ uart3: serial@ff1b0000 {
reg-io-width = <4>;
clocks = <&cru SCLK_UART3>, <&cru PCLK_UART3>;
clock-names = "baudclk", "apb_pclk";
+ dmas = <&dmac_peri 7>, <&dmac_peri 8>;
+ dma-names = "tx", "rx";
pinctrl-names = "default";
pinctrl-0 = <&uart3_xfer>;
status = "disabled";
@@ -472,6 +478,8 @@ uart4: serial@ff1c0000 {
reg-io-width = <4>;
clocks = <&cru SCLK_UART4>, <&cru PCLK_UART4>;
clock-names = "baudclk", "apb_pclk";
+ dmas = <&dmac_peri 9>, <&dmac_peri 10>;
+ dma-names = "tx", "rx";
pinctrl-names = "default";
pinctrl-0 = <&uart4_xfer>;
status = "disabled";
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] ARM: dts: rockchip: use DMA channels for UARTs for RK3288
2020-03-15 9:51 [PATCH] ARM: dts: rockchip: use DMA channels for UARTs for RK3288 Katsuhiro Suzuki
@ 2020-03-17 0:26 ` Heiko Stuebner
0 siblings, 0 replies; 2+ messages in thread
From: Heiko Stuebner @ 2020-03-17 0:26 UTC (permalink / raw)
To: Katsuhiro Suzuki; +Cc: linux-rockchip, linux-arm-kernel, linux-kernel
Am Sonntag, 15. März 2020, 10:51:15 CET schrieb Katsuhiro Suzuki:
> This patch enables to use DMAC for all UARTs that are connected to
> dmac_peri core for Rochchip RK3288.
>
> Only uart2 is connected different DMAC (dmac_bus_s) so keep current
> settings on this patch.
>
> Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
applied for 5.7
Thanks
Heiko
^ permalink raw reply [flat|nested] 2+ messages in thread
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