[PATCH 4/4] arm: dts: mt2701: add uart APDMA to device tree

[Long Cheng]

1. add uart APDMA controller device node
2. add uart 0/1/2/3 DMA function
3. uart0 is console, So disable DMA
4. enable uart2 port to test DMA function.

Signed-off-by: Long Cheng <long.ch...@mediatek.com>
---
 arch/arm/boot/dts/mt2701-evb.dts |   22 ++++++++++++++++++++++
 arch/arm/boot/dts/mt2701.dtsi    |   29 +++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)

diff --git a/arch/arm/boot/dts/mt2701-evb.dts b/arch/arm/boot/dts/mt2701-evb.dts
index 082ca88..2f92bf9 100644
--- a/arch/arm/boot/dts/mt2701-evb.dts
+++ b/arch/arm/boot/dts/mt2701-evb.dts
@@ -24,6 +24,28 @@
        };
 };
 
+&pio {
+       uart2_default_cfg: uart2default {
+               pins_cmd_dat {
+                       pinmux = <MT2701_PIN_14_URXD2__FUNC_URXD2>,
+                                <MT2701_PIN_15_UTXD2__FUNC_UTXD2>,
+                                <MT2701_PIN_242_URTS2__FUNC_URTS2>,
+                                <MT2701_PIN_243_UCTS2__FUNC_UCTS2>;
+                       bias-pull-up;
+               };
+       };
+};
+
 &uart0 {
+       dmas = "";
+       dma-names = "";
+
+       status = "okay";
+};
+
+&uart2 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart2_default_cfg>;
+
        status = "okay";
 };
diff --git a/arch/arm/boot/dts/mt2701.dtsi b/arch/arm/boot/dts/mt2701.dtsi
index 7eab6f4..62b3ec9 100644
--- a/arch/arm/boot/dts/mt2701.dtsi
+++ b/arch/arm/boot/dts/mt2701.dtsi
@@ -175,6 +175,23 @@
                      <0 0x10216000 0 0x2000>;
        };
 
+       apdma: dma-controller@11000380 {
+               compatible = "mediatek,mt2701-uart-dma",
+                            "mediatek,mt6577-uart-dma";
+               reg = <0 0x11000380 0 0x400>;
+               interrupts = <GIC_SPI 63 IRQ_TYPE_LEVEL_LOW>,
+                            <GIC_SPI 64 IRQ_TYPE_LEVEL_LOW>,
+                            <GIC_SPI 65 IRQ_TYPE_LEVEL_LOW>,
+                            <GIC_SPI 66 IRQ_TYPE_LEVEL_LOW>,
+                            <GIC_SPI 67 IRQ_TYPE_LEVEL_LOW>,
+                            <GIC_SPI 68 IRQ_TYPE_LEVEL_LOW>,
+                            <GIC_SPI 69 IRQ_TYPE_LEVEL_LOW>,
+                            <GIC_SPI 70 IRQ_TYPE_LEVEL_LOW>;
+               clocks = <&pericfg CLK_PERI_AP_DMA>;
+               clock-names = "apdma";
+               #dma-cells = <1>;
+       };
+
        uart0: serial@11002000 {
                compatible = "mediatek,mt2701-uart",
                             "mediatek,mt6577-uart";
@@ -182,6 +199,9 @@
                interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_LOW>;
                clocks = <&pericfg CLK_PERI_UART0_SEL>, <&pericfg 
CLK_PERI_UART0>;
                clock-names = "baud", "bus";
+               dmas = <&apdma 0
+                       &apdma 1>;
+               dma-names = "tx", "rx";
                status = "disabled";
        };
 
@@ -192,6 +212,9 @@
                interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_LOW>;
                clocks = <&pericfg CLK_PERI_UART1_SEL>, <&pericfg 
CLK_PERI_UART1>;
                clock-names = "baud", "bus";
+               dmas = <&apdma 2
+                       &apdma 3>;
+               dma-names = "tx", "rx";
                status = "disabled";
        };
 
@@ -202,6 +225,9 @@
                interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_LOW>;
                clocks = <&pericfg CLK_PERI_UART2_SEL>, <&pericfg 
CLK_PERI_UART2>;
                clock-names = "baud", "bus";
+               dmas = <&apdma 4
+                       &apdma 5>;
+               dma-names = "tx", "rx";
                status = "disabled";
        };
 
@@ -212,6 +238,9 @@
                interrupts = <GIC_SPI 54 IRQ_TYPE_LEVEL_LOW>;
                clocks = <&pericfg CLK_PERI_UART3_SEL>, <&pericfg 
CLK_PERI_UART3>;
                clock-names = "baud", "bus";
+               dmas = <&apdma 6
+                       &apdma 7>;
+               dma-names = "tx", "rx";
                status = "disabled";
        };
 };
-- 
1.7.9.5