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@xxxxxxxxxxx>
---
arch/arm/boot/dts/r9a06g032.dtsi | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/arch/arm/boot/dts/r9a06g032.dtsi b/arch/arm/boot/dts/r9a06g032.dtsi
index 804f2d6f416f..aa447e2622e0 100644
--- a/arch/arm/boot/dts/r9a06g032.dtsi
+++ b/arch/arm/boot/dts/r9a06g032.dtsi
@@ -128,6 +128,9 @@ uart3: serial@50000000 {
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";
};
@@ -139,6 +142,9 @@ uart4: serial@50001000 {
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";
};
@@ -150,6 +156,9 @@ uart5: serial@50002000 {
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";
};
@@ -161,6 +170,9 @@ uart6: serial@50003000 {
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";
};
@@ -172,6 +184,9 @@ uart7: serial@50004000 {
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";
};
--
2.27.0
