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c0374eb804
SiI9234 transmitter converts eTMDS/HDMI signal to MHL 1.0. It is controlled via I2C bus. Its interaction with other devices in video pipeline is performed mainly on HW level. The only interaction it does on device driver level is filtering-out unsupported video modes, it exposes drm_bridge interface to perform this operation. This patch is based on the code refactored by Tomasz Stanislawski <t.stanislaws@samsung.com>, which was initially developed by: Adam Hampson <ahampson@sta.samsung.com> Erik Gilling <konkers@android.com> Shankar Bandal <shankar.b@samsung.com> Dharam Kumar <dharam.kr@samsung.com> Signed-off-by: Maciej Purski <m.purski@samsung.com> Acked-by: Rob Herring <robh@kernel.org> [for dt bindings] Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/1507212431-5801-2-git-send-email-m.purski@samsung.com
50 lines
1.3 KiB
Plaintext
50 lines
1.3 KiB
Plaintext
Silicon Image SiI9234 HDMI/MHL bridge bindings
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Required properties:
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- compatible : "sil,sii9234".
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- reg : I2C address for TPI interface, use 0x39
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- avcc33-supply : MHL/USB Switch Supply Voltage (3.3V)
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- iovcc18-supply : I/O Supply Voltage (1.8V)
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- avcc12-supply : TMDS Analog Supply Voltage (1.2V)
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- cvcc12-supply : Digital Core Supply Voltage (1.2V)
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- interrupts, interrupt-parent: interrupt specifier of INT pin
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- reset-gpios: gpio specifier of RESET pin (active low)
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- video interfaces: Device node can contain two video interface port
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nodes for HDMI encoder and connector according to [1].
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- port@0 - MHL to HDMI
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- port@1 - MHL to connector
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[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
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Example:
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sii9234@39 {
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compatible = "sil,sii9234";
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reg = <0x39>;
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avcc33-supply = <&vcc33mhl>;
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iovcc18-supply = <&vcc18mhl>;
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avcc12-supply = <&vsil12>;
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cvcc12-supply = <&vsil12>;
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reset-gpios = <&gpf3 4 GPIO_ACTIVE_LOW>;
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interrupt-parent = <&gpf3>;
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interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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mhl_to_hdmi: endpoint {
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remote-endpoint = <&hdmi_to_mhl>;
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};
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};
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port@1 {
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reg = <1>;
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mhl_to_connector: endpoint {
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remote-endpoint = <&connector_to_mhl>;
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};
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};
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};
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};
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