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| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-04-21 12:53:21 +0300 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2022-05-06 12:09:33 +0300 |
| commit | f691d4b64c19176099c58811b0e1240259a1d258 (patch) | |
| tree | 3821eec38df7a27b65d283a994e00c556ebc2345 /arch/arm/boot/dts/r9a06g032.dtsi | |
| parent | 6002e2f179ec65e97e880b21e919e71852d95204 (diff) | |
| download | linux-f691d4b64c19176099c58811b0e1240259a1d258.tar.xz | |
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 <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20220421095323.101811-11-miquel.raynal@bootlin.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'arch/arm/boot/dts/r9a06g032.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/r9a06g032.dtsi | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/r9a06g032.dtsi b/arch/arm/boot/dts/r9a06g032.dtsi index a84efde210d2..6b6944b943f8 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"; }; |