From f691d4b64c19176099c58811b0e1240259a1d258 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 21 Apr 2022 11:53:21 +0200 Subject: [PATCH] ARM: dts: r9a06g032: Fill the UART DMA properties UART 0 to 2 do not have DMA support, while UART 3 to 7 do. Fill the "dmas" and "dma-names" properties for each of these nodes. Please mind that these nodes go through the dmamux node which will redirect the requests to the right DMA controller. The first 4 cells of the "dmas" properties will be transferred as-is to the DMA controllers. The last 2 cells are consumed by the dmamux. Which means cell 0 and 4 are almost redundant, one giving the controller request ID and the other the dmamux channel which is a 1:1 translation of the request IDs, shifted by 16 when pointing to the second DMA controller. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/r/20220421095323.101811-11-miquel.raynal@bootlin.com Signed-off-by: Geert Uytterhoeven --- arch/arm/boot/dts/r9a06g032.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm/boot/dts/r9a06g032.dtsi b/arch/arm/boot/dts/r9a06g032.dtsi index a84efde..6b6944b 100644 --- a/arch/arm/boot/dts/r9a06g032.dtsi +++ b/arch/arm/boot/dts/r9a06g032.dtsi @@ -145,6 +145,8 @@ reg-io-width = <4>; clocks = <&sysctrl R9A06G032_CLK_UART3>, <&sysctrl R9A06G032_HCLK_UART3>; clock-names = "baudclk", "apb_pclk"; + dmas = <&dmamux 0 0 0 0 0 1>, <&dmamux 1 0 0 0 1 1>; + dma-names = "rx", "tx"; status = "disabled"; }; @@ -156,6 +158,8 @@ reg-io-width = <4>; clocks = <&sysctrl R9A06G032_CLK_UART4>, <&sysctrl R9A06G032_HCLK_UART4>; clock-names = "baudclk", "apb_pclk"; + dmas = <&dmamux 2 0 0 0 2 1>, <&dmamux 3 0 0 0 3 1>; + dma-names = "rx", "tx"; status = "disabled"; }; @@ -167,6 +171,8 @@ reg-io-width = <4>; clocks = <&sysctrl R9A06G032_CLK_UART5>, <&sysctrl R9A06G032_HCLK_UART5>; clock-names = "baudclk", "apb_pclk"; + dmas = <&dmamux 4 0 0 0 4 1>, <&dmamux 5 0 0 0 5 1>; + dma-names = "rx", "tx"; status = "disabled"; }; @@ -178,6 +184,8 @@ reg-io-width = <4>; clocks = <&sysctrl R9A06G032_CLK_UART6>, <&sysctrl R9A06G032_HCLK_UART6>; clock-names = "baudclk", "apb_pclk"; + dmas = <&dmamux 6 0 0 0 6 1>, <&dmamux 7 0 0 0 7 1>; + dma-names = "rx", "tx"; status = "disabled"; }; @@ -189,6 +197,8 @@ reg-io-width = <4>; clocks = <&sysctrl R9A06G032_CLK_UART7>, <&sysctrl R9A06G032_HCLK_UART7>; clock-names = "baudclk", "apb_pclk"; + dmas = <&dmamux 4 0 0 0 20 1>, <&dmamux 5 0 0 0 21 1>; + dma-names = "rx", "tx"; status = "disabled"; }; -- 2.7.4