ARM: shmobile: r8a73a4: add a DT node for the DMAC

Add a DT node for the only system DMAC instance on r8a73a4. The RT DMAC
can be added later under the same multiplexer, because they can serve the
same slaves and use the same MID-RID values. Configuration data is
supplied to the driver, using a compatibility match string.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm/boot/dts/r8a73a4.dtsi b/arch/arm/boot/dts/r8a73a4.dtsi
index a2c94567046039b336c09bbf1159f54136fe19d4..8c81a0c211783c052b87334568a0b2ccacdd86e9 100644 (file)
--- a/arch/arm/boot/dts/r8a73a4.dtsi
+++ b/arch/arm/boot/dts/r8a73a4.dtsi
@@ -78,6 +78,49 @@ irqc1: interrupt-controller@e61c0200 {
                                <0 56 4>, <0 57 4>;
        };
 
+       dmac: dma-multiplexer@0 {
+               compatible = "renesas,shdma-mux";
+               #dma-cells = <1>;
+               dma-channels = <20>;
+               dma-requests = <256>;
+               #address-cells = <2>;
+               #size-cells = <2>;
+               ranges;
+
+               dma0: dma-controller@e6700020 {
+                       compatible = "renesas,shdma-r8a73a4";
+                       reg = <0 0xe6700020 0 0x89e0>;
+                       interrupt-parent = <&gic>;
+                       interrupts = <0 220 4
+                                       0 200 4
+                                       0 201 4
+                                       0 202 4
+                                       0 203 4
+                                       0 204 4
+                                       0 205 4
+                                       0 206 4
+                                       0 207 4
+                                       0 208 4
+                                       0 209 4
+                                       0 210 4
+                                       0 211 4
+                                       0 212 4
+                                       0 213 4
+                                       0 214 4
+                                       0 215 4
+                                       0 216 4
+                                       0 217 4
+                                       0 218 4
+                                       0 219 4>;
+                       interrupt-names = "error",
+                                       "ch0", "ch1", "ch2", "ch3",
+                                       "ch4", "ch5", "ch6", "ch7",
+                                       "ch8", "ch9", "ch10", "ch11",
+                                       "ch12", "ch13", "ch14", "ch15",
+                                       "ch16", "ch17", "ch18", "ch19";
+               };
+       };
+
        thermal@e61f0000 {
                compatible = "renesas,rcar-thermal";
                reg = <0 0xe61f0000 0 0x14>, <0 0xe61f0100 0 0x38>,