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Diffstat (limited to 'arch/arm/boot/dts/tegra114.dtsi')
-rw-r--r--arch/arm/boot/dts/tegra114.dtsi27
1 files changed, 23 insertions, 4 deletions
diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi
index 552e63972f14..352c2f32925e 100644
--- a/arch/arm/boot/dts/tegra114.dtsi
+++ b/arch/arm/boot/dts/tegra114.dtsi
@@ -4,6 +4,13 @@
compatible = "nvidia,tegra114";
interrupt-parent = <&gic>;
+ aliases {
+ serial0 = &uarta;
+ serial1 = &uartb;
+ serial2 = &uartc;
+ serial3 = &uartd;
+ };
+
gic: interrupt-controller {
compatible = "arm,cortex-a15-gic";
#interrupt-cells = <3>;
@@ -99,38 +106,50 @@
0x70003000 0x40c>; /* Mux registers */
};
- serial@70006000 {
+ /*
+ * There are two serial driver i.e. 8250 based simple serial
+ * driver and APB DMA based serial driver for higher baudrate
+ * and performace. To enable the 8250 based driver, the compatible
+ * is "nvidia,tegra114-uart", "nvidia,tegra20-uart" and to enable
+ * the APB DMA based serial driver, the comptible is
+ * "nvidia,tegra114-hsuart", "nvidia,tegra30-hsuart".
+ */
+ uarta: serial@70006000 {
compatible = "nvidia,tegra114-uart", "nvidia,tegra20-uart";
reg = <0x70006000 0x40>;
reg-shift = <2>;
interrupts = <0 36 0x04>;
+ nvidia,dma-request-selector = <&apbdma 8>;
status = "disabled";
clocks = <&tegra_car 6>;
};
- serial@70006040 {
+ uartb: serial@70006040 {
compatible = "nvidia,tegra114-uart", "nvidia,tegra20-uart";
reg = <0x70006040 0x40>;
reg-shift = <2>;
interrupts = <0 37 0x04>;
+ nvidia,dma-request-selector = <&apbdma 9>;
status = "disabled";
clocks = <&tegra_car 192>;
};
- serial@70006200 {
+ uartc: serial@70006200 {
compatible = "nvidia,tegra114-uart", "nvidia,tegra20-uart";
reg = <0x70006200 0x100>;
reg-shift = <2>;
interrupts = <0 46 0x04>;
+ nvidia,dma-request-selector = <&apbdma 10>;
status = "disabled";
clocks = <&tegra_car 55>;
};
- serial@70006300 {
+ uartd: serial@70006300 {
compatible = "nvidia,tegra114-uart", "nvidia,tegra20-uart";
reg = <0x70006300 0x100>;
reg-shift = <2>;
interrupts = <0 90 0x04>;
+ nvidia,dma-request-selector = <&apbdma 19>;
status = "disabled";
clocks = <&tegra_car 65>;
};