From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vladimir Zapolskiy Subject: [PATCH 3/7] dt-bindings: pinctrl: ds90ux9xx: add description of TI DS90Ux9xx pinmux Date: Tue, 9 Oct 2018 00:12:01 +0300 Message-ID: <20181008211205.2900-4-vz@mleia.com> References: <20181008211205.2900-1-vz@mleia.com> Return-path: In-Reply-To: <20181008211205.2900-1-vz@mleia.com> Sender: linux-kernel-owner@vger.kernel.org To: Lee Jones , Linus Walleij , Rob Herring Cc: Marek Vasut , Laurent Pinchart , Wolfram Sang , devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Vladimir Zapolskiy List-Id: linux-gpio@vger.kernel.org From: Vladimir Zapolskiy TI DS90Ux9xx de-/serializers have a capability to multiplex pin functions, in particular a pin may have selectable functions of GPIO, GPIO line transmitter, one of I2S lines, one of RGB24 video signal lines and so on. The change adds a description of DS90Ux9xx pin multiplexers and GPIO controllers. Signed-off-by: Vladimir Zapolskiy --- .../bindings/pinctrl/ti,ds90ux9xx-pinctrl.txt | 83 +++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/ti,ds90ux9xx-pinctrl.txt diff --git a/Documentation/devicetree/bindings/pinctrl/ti,ds90ux9xx-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/ti,ds90ux9xx-pinctrl.txt new file mode 100644 index 000000000000..fbfa1a3cdf9f --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/ti,ds90ux9xx-pinctrl.txt @@ -0,0 +1,83 @@ +TI DS90Ux9xx de-/serializer pinmux and GPIO subcontroller + +Required properties: +- compatible: Must contain a generic "ti,ds90ux9xx-pinctrl" value and + may contain one more specific value from the list: + "ti,ds90ux925-pinctrl", + "ti,ds90ux926-pinctrl", + "ti,ds90ux927-pinctrl", + "ti,ds90ux928-pinctrl", + "ti,ds90ux940-pinctrl". + +- gpio-controller: Marks the device node as a GPIO controller. + +- #gpio-cells: Must be set to 2, + - the first cell is the GPIO offset number within the controller, + - the second cell is used to specify the GPIO line polarity. + +- gpio-ranges: Mapping to pin controller pins (as described in + Documentation/devicetree/bindings/gpio/gpio.txt) + +Optional properties: +- ti,video-depth-18bit: Sets video bridge pins to RGB 18-bit mode. + +Available pins, groups and functions (reference to device datasheets): + +function: "gpio" ("gpio4" is on DS90Ux925 and DS90Ux926 only, + "gpio9" is on DS90Ux940 only) + - pins: "gpio0", "gpio1", "gpio2", "gpio3", "gpio4", "gpio5", "gpio6", + "gpio7", "gpio8", "gpio9" + +function: "gpio-remote" + - pins: "gpio0", "gpio1", "gpio2", "gpio3" + +function: "pass" (DS90Ux940 specific only) + - pins: "gpio0", "gpio3" + +function: "i2s-1" + - group: "i2s-1" + +function: "i2s-2" + - group: "i2s-2" + +function: "i2s-3" (DS90Ux927, DS90Ux928 and DS90Ux940 specific only) + - group: "i2s-3" + +function: "i2s-4" (DS90Ux927, DS90Ux928 and DS90Ux940 specific only) + - group: "i2s-4" + +function: "i2s-m" (DS90Ux928 and DS90Ux940 specific only) + - group: "i2s-m" + +function: "parallel" (DS90Ux925 and DS90Ux926 specific only) + - group: "parallel" + +Example (deserializer with pins GPIO[3:0] set to bridged output + function and pin GPIO4 in standard hogged GPIO function): + +deserializer { + compatible = "ti,ds90ub928q", "ti,ds90ux9xx"; + + ds90ux928_pctrl: pin-controller { + compatible = "ti,ds90ux928-pinctrl", "ti,ds90ux9xx-pinctrl"; + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&ds90ux928_pctrl 0 0 8>; + + pinctrl-names = "default"; + pinctrl-0 = <&ds90ux928_pins>; + + ds90ux928_pins: pinmux { + gpio-remote { + pins = "gpio0", "gpio1", "gpio2", "gpio3"; + function = "gpio-remote"; + }; + }; + + rst { + gpio-hog; + gpios = <4 GPIO_ACTIVE_HIGH>; + output-high; + }; + }; +}; -- 2.17.1