MIPS: dts: jz4780: Add DMA controller node to the devicetree

Add the devicetree node to support the DMA controller found
in JZ480 SoCs.

Tested-by: Mathieu Malaterre <malat@debian.org>
Acked-by: James Hogan <jhogan@kernel.org>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.co.uk>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/arch/mips/boot/dts/ingenic/jz4780.dtsi b/arch/mips/boot/dts/ingenic/jz4780.dtsi
index 9b5794667aee2eeb33e76e3829948f16fd81ea99..15a9801430bd6993e5979bbcdc3309990470ed55 100644 (file)
--- a/arch/mips/boot/dts/ingenic/jz4780.dtsi
+++ b/arch/mips/boot/dts/ingenic/jz4780.dtsi
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <dt-bindings/clock/jz4780-cgu.h>
+#include <dt-bindings/dma/jz4780-dma.h>
 
 / {
        #address-cells = <1>;
@@ -241,6 +242,17 @@
                status = "disabled";
        };
 
+       dma: dma@13420000 {
+               compatible = "ingenic,jz4780-dma";
+               reg = <0x13420000 0x10000>;
+               #dma-cells = <2>;
+
+               interrupt-parent = <&intc>;
+               interrupts = <10>;
+
+               clocks = <&cgu JZ4780_CLK_PDMA>;
+       };
+
        bch: bch@134d0000 {
                compatible = "ingenic,jz4780-bch";
                reg = <0x134d0000 0x10000>;

diff --git a/include/dt-bindings/dma/jz4780-dma.h b/include/dt-bindings/dma/jz4780-dma.h
new file mode 100644 (file)
index 0000000..df017fd
--- /dev/null
+++ b/include/dt-bindings/dma/jz4780-dma.h
@@ -0,0 +1,49 @@
+#ifndef __DT_BINDINGS_DMA_JZ4780_DMA_H__
+#define __DT_BINDINGS_DMA_JZ4780_DMA_H__
+
+/*
+ * Request type numbers for the JZ4780 DMA controller (written to the DRTn
+ * register for the channel).
+ */
+#define JZ4780_DMA_I2S1_TX     0x4
+#define JZ4780_DMA_I2S1_RX     0x5
+#define JZ4780_DMA_I2S0_TX     0x6
+#define JZ4780_DMA_I2S0_RX     0x7
+#define JZ4780_DMA_AUTO                0x8
+#define JZ4780_DMA_SADC_RX     0x9
+#define JZ4780_DMA_UART4_TX    0xc
+#define JZ4780_DMA_UART4_RX    0xd
+#define JZ4780_DMA_UART3_TX    0xe
+#define JZ4780_DMA_UART3_RX    0xf
+#define JZ4780_DMA_UART2_TX    0x10
+#define JZ4780_DMA_UART2_RX    0x11
+#define JZ4780_DMA_UART1_TX    0x12
+#define JZ4780_DMA_UART1_RX    0x13
+#define JZ4780_DMA_UART0_TX    0x14
+#define JZ4780_DMA_UART0_RX    0x15
+#define JZ4780_DMA_SSI0_TX     0x16
+#define JZ4780_DMA_SSI0_RX     0x17
+#define JZ4780_DMA_SSI1_TX     0x18
+#define JZ4780_DMA_SSI1_RX     0x19
+#define JZ4780_DMA_MSC0_TX     0x1a
+#define JZ4780_DMA_MSC0_RX     0x1b
+#define JZ4780_DMA_MSC1_TX     0x1c
+#define JZ4780_DMA_MSC1_RX     0x1d
+#define JZ4780_DMA_MSC2_TX     0x1e
+#define JZ4780_DMA_MSC2_RX     0x1f
+#define JZ4780_DMA_PCM0_TX     0x20
+#define JZ4780_DMA_PCM0_RX     0x21
+#define JZ4780_DMA_SMB0_TX     0x24
+#define JZ4780_DMA_SMB0_RX     0x25
+#define JZ4780_DMA_SMB1_TX     0x26
+#define JZ4780_DMA_SMB1_RX     0x27
+#define JZ4780_DMA_SMB2_TX     0x28
+#define JZ4780_DMA_SMB2_RX     0x29
+#define JZ4780_DMA_SMB3_TX     0x2a
+#define JZ4780_DMA_SMB3_RX     0x2b
+#define JZ4780_DMA_SMB4_TX     0x2c
+#define JZ4780_DMA_SMB4_RX     0x2d
+#define JZ4780_DMA_DES_TX      0x2e
+#define JZ4780_DMA_DES_RX      0x2f
+
+#endif /* __DT_BINDINGS_DMA_JZ4780_DMA_H__ */