From mboxrd@z Thu Jan 1 00:00:00 1970 From: qiaozhou Subject: [PATCH 4/7] dt-bindings: serial: add ASR8751C serial bindings Date: Sat, 23 Mar 2019 22:01:25 +0800 Message-ID: <1553349688-1946-5-git-send-email-qiaozhou@asrmicro.com> References: <1553349688-1946-1-git-send-email-qiaozhou@asrmicro.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1553349688-1946-1-git-send-email-qiaozhou@asrmicro.com> Sender: linux-kernel-owner@vger.kernel.org To: Rob Herring , Mark Rutland , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Qiao Zhou List-Id: devicetree@vger.kernel.org From: Qiao Zhou Add binding documentation for ASR8751C serial device. Signed-off-by: qiaozhou --- .../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@d4017000 { + 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