From mboxrd@z Thu Jan 1 00:00:00 1970 From: hgkr.klein@gmail.com (Helmut Klein) Date: Fri, 31 Mar 2017 18:54:35 +0200 Subject: [PATCH v3 2/4] dt-binding: meson_uart: add documentation for the UARTs of amlogic In-Reply-To: <20170331165437.26227-1-hgkr.klein@gmail.com> References: <20170331165437.26227-1-hgkr.klein@gmail.com> Message-ID: <20170331165437.26227-3-hgkr.klein@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Add the documentation for the device tree binding of meson_uart Signed-off-by: Helmut Klein --- .../bindings/serial/amlogic,meson_uart.txt | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 Documentation/devicetree/bindings/serial/amlogic,meson_uart.txt diff --git a/Documentation/devicetree/bindings/serial/amlogic,meson_uart.txt b/Documentation/devicetree/bindings/serial/amlogic,meson_uart.txt new file mode 100644 index 000000000000..8250a191c2fc --- /dev/null +++ b/Documentation/devicetree/bindings/serial/amlogic,meson_uart.txt @@ -0,0 +1,30 @@ +* Amlogic Meson UART, used in multiple SoCs (e.g. S905, s905X, ...) + +Required properties: +- compatible : "amlogic,meson-uart" +- reg : offset and length of the register set for the device. +- interrupts : device interrupt +- clocks : a list of phandle + clock-specifier pairs, one for each + entry in clock names. +- clocks-names : contains: + * "xtal" for the baud rate clock + * "core" for the core clock of none AO UARTs (optional) + +e.g. +uart_A: serial at 84c0 { + compatible = "amlogic,meson-uart"; + reg = <0x0 0x84c0 0x0 0x14>; + pinctrl-0 = <&uart_a_pins &uart_a_cts_rts_pins>; + interrupts = ; + clocks = <&xtal>, <&clkc CLKID_UART0>; + clock-names = "xtal", "core"; + status = "ok"; +}; + +Note: Each port should have an alias correctly numbered in "aliases" node. + +e.g. +aliases { + serial0 = &uart_AO; + serial1 = &uart_A; +}; -- 2.11.0