From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Cercueil Date: Sun, 22 Jan 2017 14:49:35 +0000 Subject: [PATCH v2 02/14] Documentation: dt/bindings: Document pinctrl-gpio Message-Id: <20170122144947.16158-3-paul@crapouillou.net> List-Id: References: <27071da2f01d48141e8ac3dfaa13255d@mail.crapouillou.net> <20170122144947.16158-1-paul@crapouillou.net> In-Reply-To: <20170122144947.16158-1-paul@crapouillou.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Linus Walleij , Rob Herring , Mark Rutland , Ralf Baechle , Ulf Hansson Cc: Boris Brezillon , Thierry Reding , Bartlomiej Zolnierkiewicz , Maarten ter Huurne , Lars-Peter Clausen , Paul Burton , linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@linux-mips.org, linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org, linux-pwm@vger.kernel.org, linux-fbdev@vger.kernel.org, james.hogan@imgtec.com, Paul Cercueil This commit adds documentation for the devicetree bidings of the pinctrl-gpio driver, which handles GPIOs of the Ingenic SoCs currently supported by the Linux kernel. Signed-off-by: Paul Cercueil --- .../devicetree/bindings/gpio/ingenic,gpio.txt | 45 ++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/ingenic,gpio.txt v2: New patch diff --git a/Documentation/devicetree/bindings/gpio/ingenic,gpio.txt b/Documentation/devicetree/bindings/gpio/ingenic,gpio.txt new file mode 100644 index 000000000000..b2eb20494365 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/ingenic,gpio.txt @@ -0,0 +1,45 @@ +Ingenic jz47xx GPIO controller + +Required properties: + - compatible: + - "ingenic,jz4740-gpio" for the JZ4740 SoC + - "ingenic,jz4780-gpio" for the JZ4780 SoC + + - reg: Base address and length of each memory resource used by the GPIO + controller hardware module. + + - gpio-controller: Marks the device node as a GPIO controller. + - #gpio-cells: Should be 2. The first cell is the GPIO number and the second + cell specifies GPIO flags, as defined in . Only the + GPIO_ACTIVE_HIGH and GPIO_ACTIVE_LOW flags are supported. + - gpio-ranges: Range of pins managed by the GPIO controller. + +Optional properties: + - base: The GPIO number to use as the base for this driver. + - interrupt-controller: Marks the device node as an interrupt controller. + - interrupts: Interrupt specifier for the controllers interrupt. + Required if 'interrupt-controller' is specified. + +Please refer to gpio.txt in this directory for details of gpio-ranges property +and the common GPIO bindings used by client devices. + +The GPIO controller also acts as an interrupt controller. It uses the default +two cells specifier as described in Documentation/devicetree/bindings/ +interrupt-controller/interrupts.txt. + +Example: + +gpa: gpio-controller@10010000 { + compatible = "ingenic,jz4740-gpio"; + reg = <0x10010000 0x100>; + + gpio-controller; + gpio-ranges = <&pinctrl 0 0 32>; + #gpio-cells = <2>; + + interrupt-controller; + #interrupt-cells = <2>; + + interrupt-parent = <&intc>; + interrupts = <28>; +}; -- 2.11.0