From mboxrd@z Thu Jan 1 00:00:00 1970 From: alexandre.torgue@st.com (Alexandre TORGUE) Date: Thu, 15 Sep 2016 18:42:39 +0200 Subject: [PATCH 07/11] dt-bindings: Add DMA bindings for STM32 USART In-Reply-To: <1473957763-30629-1-git-send-email-alexandre.torgue@st.com> References: <1473957763-30629-1-git-send-email-alexandre.torgue@st.com> Message-ID: <1473957763-30629-8-git-send-email-alexandre.torgue@st.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Signed-off-by: Gerald Baeza Signed-off-by: Alexandre TORGUE diff --git a/Documentation/devicetree/bindings/serial/st,stm32-usart.txt b/Documentation/devicetree/bindings/serial/st,stm32-usart.txt index 75b1400..85ec5f2 100644 --- a/Documentation/devicetree/bindings/serial/st,stm32-usart.txt +++ b/Documentation/devicetree/bindings/serial/st,stm32-usart.txt @@ -12,6 +12,8 @@ stm32(f4) or stm32f7. Optional properties: - pinctrl: The reference on the pins configuration - st,hw-flow-ctrl: bool flag to enable hardware flow control. +- dmas: phandle(s) to DMA controller node(s). Refer to stm32-dma.txt +- dma-names: "rx" and/or "tx" Examples: usart4: serial at 40004c00 { @@ -32,3 +34,13 @@ usart2: serial at 40004400 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_usart2 &pinctrl_usart2_rtscts>; }; + +usart1: serial at 40011000 { + compatible = "st,stm32-usart", "st,stm32-uart"; + reg = <0x40011000 0x400>; + interrupts = <37>; + clocks = <&rcc 0 164>; + dmas = <&dma2 2 4 0x414 0x0>, + <&dma2 7 4 0x414 0x0>; + dma-names = "rx", "tx"; +}; -- 1.9.1