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Diffstat (limited to 'Documentation/devicetree')
3 files changed, 56 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/serial/nvidia,tegra20-hsuart.txt b/Documentation/devicetree/bindings/serial/nvidia,tegra20-hsuart.txt new file mode 100644 index 0000000..392a449 --- /dev/null +++ b/Documentation/devicetree/bindings/serial/nvidia,tegra20-hsuart.txt @@ -0,0 +1,24 @@ +NVIDIA Tegra20/Tegra30 high speed (DMA based) UART controller driver. + +Required properties: +- compatible : should be "nvidia,tegra30-hsuart", "nvidia,tegra20-hsuart". +- reg: Should contain UART controller registers location and length. +- interrupts: Should contain UART controller interrupts. +- nvidia,dma-request-selector : The Tegra DMA controller's phandle and + request selector for this UART controller. + +Optional properties: +- nvidia,enable-modem-interrupt: Enable modem interrupts. Should be enable + only if all 8 lines of UART controller are pinmuxed. + +Example: + +serial@70006000 { + compatible = "nvidia,tegra30-hsuart", "nvidia,tegra20-hsuart"; + reg = <0x70006000 0x40>; + reg-shift = <2>; + interrupts = <0 36 0x04>; + nvidia,dma-request-selector = <&apbdma 8>; + nvidia,enable-modem-interrupt; + status = "disabled"; +}; diff --git a/Documentation/devicetree/bindings/tty/serial/arc-uart.txt b/Documentation/devicetree/bindings/tty/serial/arc-uart.txt new file mode 100644 index 0000000..5cae2eb --- /dev/null +++ b/Documentation/devicetree/bindings/tty/serial/arc-uart.txt @@ -0,0 +1,26 @@ +* Synopsys ARC UART : Non standard UART used in some of the ARC FPGA boards + +Required properties: +- compatible : "snps,arc-uart" +- reg : offset and length of the register set for the device. +- interrupts : device interrupt +- clock-frequency : the input clock frequency for the UART +- current-speed : baud rate for UART + +e.g. + +arcuart0: serial@c0fc1000 { + compatible = "snps,arc-uart"; + reg = <0xc0fc1000 0x100>; + interrupts = <5>; + clock-frequency = <80000000>; + current-speed = <115200>; + status = "okay"; +}; + +Note: Each port should have an alias correctly numbered in "aliases" node. + +e.g. +aliases { + serial0 = &arcuart0; +}; diff --git a/Documentation/devicetree/bindings/tty/serial/efm32-uart.txt b/Documentation/devicetree/bindings/tty/serial/efm32-uart.txt index 6588b69..8e080b8 100644 --- a/Documentation/devicetree/bindings/tty/serial/efm32-uart.txt +++ b/Documentation/devicetree/bindings/tty/serial/efm32-uart.txt @@ -5,10 +5,16 @@ Required properties: - reg : Address and length of the register set - interrupts : Should contain uart interrupt +Optional properties: +- location : Decides the location of the USART I/O pins. + Allowed range : [0 .. 5] + Default: 0 + Example: uart@0x4000c400 { compatible = "efm32,uart"; reg = <0x4000c400 0x400>; interrupts = <15>; + location = <0>; }; |
