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Date: Sat, 23 Mar 2019 22:01:25 +0800 From: qiaozhou <qiaozhou@...micro.com> To: Rob Herring <robh+dt@...nel.org>, Mark Rutland <mark.rutland@....com>, <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org> CC: Qiao Zhou <qiaozhou@...micro.com> Subject: [PATCH 4/7] dt-bindings: serial: add ASR8751C serial bindings From: Qiao Zhou <qiaozhou@...micro.com> Add binding documentation for ASR8751C serial device. Signed-off-by: qiaozhou <qiaozhou@...micro.com> --- .../devicetree/bindings/serial/asr-serial.txt | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 Documentation/devicetree/bindings/serial/asr-serial.txt diff --git a/Documentation/devicetree/bindings/serial/asr-serial.txt b/Documentation/devicetree/bindings/serial/asr-serial.txt new file mode 100644 index 0000000..9e0e191 --- /dev/null +++ b/Documentation/devicetree/bindings/serial/asr-serial.txt @@ -0,0 +1,23 @@ +* UART Controller of ASR8751C SoCs + +Required properties: +- compatible : should be "asr,uart" +- reg: iomem address and length of uart registers +- interrupts : Should be the interrupt number +- clocks: clock required by uart +- clock-frequency: frequency of clock source +- dmas: dma channel used by uart tx or rx +- dma-names: dma name of uart tx or rx + +Example: + + uart0: uart@...17000 { + compatible = "asr,uart"; + reg = <0xd4017000 0x1000>; + interrupts = <0 32 0x4>; + clock-frequency = <13000000>; + dmas = <&pdma0 AP_UART0_RX 1 + &pdma0 AP_UART0_TX 1>; + dma-names = "rx", "tx"; + clocks = <&soc_clocks ASR_CLK_UART0>; + }; -- 2.7.4
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