From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vladimir Zapolskiy Subject: [PATCH 1/7] dt-bindings: mfd: ds90ux9xx: add description of TI DS90Ux9xx ICs Date: Tue, 9 Oct 2018 00:11:59 +0300 Message-ID: <20181008211205.2900-2-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, Sandeep Jain , Vladimir Zapolskiy List-Id: linux-gpio@vger.kernel.org From: Sandeep Jain The change adds device tree binding description of TI DS90Ux9xx series of serializer and deserializer controllers which support video, audio and control data transmission over FPD-III Link connection. Signed-off-by: Sandeep Jain [vzapolskiy: various updates and corrections of secondary importance] Signed-off-by: Vladimir Zapolskiy --- .../devicetree/bindings/mfd/ti,ds90ux9xx.txt | 66 +++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/ti,ds90ux9xx.txt diff --git a/Documentation/devicetree/bindings/mfd/ti,ds90ux9xx.txt b/Documentation/devicetree/bindings/mfd/ti,ds90ux9xx.txt new file mode 100644 index 000000000000..0733da88f7ef --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/ti,ds90ux9xx.txt @@ -0,0 +1,66 @@ +Texas Instruments DS90Ux9xx de-/serializer controllers + +Required properties: +- compatible: Must contain a generic "ti,ds90ux9xx" value and + may contain one more specific value from the list: + "ti,ds90ub925q", + "ti,ds90uh925q", + "ti,ds90ub927q", + "ti,ds90uh927q", + "ti,ds90ub926q", + "ti,ds90uh926q", + "ti,ds90ub928q", + "ti,ds90uh928q", + "ti,ds90ub940q", + "ti,ds90uh940q". + +Optional properties: +- reg : Specifies the I2C slave address of a local de-/serializer. +- power-gpios : GPIO line to control supplied power to the device. +- ti,backward-compatible-mode : Overrides backward compatibility mode. + Possible values are "<1>" or "<0>". + If "ti,backward-compatible-mode" is not mentioned, the backward + compatibility mode is not touched and given by hardware pin strapping. +- ti,low-frequency-mode : Overrides low frequency mode. + Possible values are "<1>" or "<0>". + If "ti,low-frequency-mode" is not mentioned, the low frequency mode + is not touched and given by hardware pin strapping. +- ti,video-map-select-msb: Sets video bridge pins to MSB mode, if it is set + MAPSEL pin value is ignored. +- ti,video-map-select-lsb: Sets video bridge pins to LSB mode, if it is set + MAPSEL pin value is ignored. +- ti,pixel-clock-edge : Selects Pixel Clock Edge. + Possible values are "<1>" or "<0>". + If "ti,pixel-clock-edge" is High <1>, output data is strobed on the + Rising edge of the PCLK. If ti,pixel-clock-edge is Low <0>, data is + strobed on the Falling edge of the PCLK. + If "ti,pixel-clock-edge" is not mentioned, the pixel clock edge + value is not touched and given by hardware pin strapping. +- ti,spread-spectrum-clock-generation : Spread Sprectrum Clock Generation. + Possible values are from "<0>" to "<7>". The same value will be + written to SSC register. If "ti,spread-spectrum-clock-gen" is not + found, then SSCG will be disabled. + +TI DS90Ux9xx serializers and deserializer device nodes may contain a number +of children device nodes to describe and enable particular subcomponents +found on ICs. + +Example: + +serializer: serializer@c { + compatible = "ti,ds90ub927q", "ti,ds90ux9xx"; + reg = <0xc>; + power-gpios = <&gpio5 12 GPIO_ACTIVE_HIGH>; + ti,backward-compatible-mode = <0>; + ti,low-frequency-mode = <0>; + ti,pixel-clock-edge = <0>; + ... +} + +deserializer: deserializer@3c { + compatible = "ti,ds90ub940q", "ti,ds90ux9xx"; + reg = <0x3c>; + power-gpios = <&gpio6 31 GPIO_ACTIVE_HIGH>; + ... +} + -- 2.17.1