On Wed, Jun 13, 2018 at 5:08 AM, Sandeep Panda spanda@codeaurora.org wrote:
Document the bindings used for the sn65dsi86 DSI to eDP bridge.
Changes in v1:
- Rephrase the dt-binding descriptions to be more inline with existing bindings (Andrzej Hajda).
- Add missing dt-binding that are parsed by corresponding driver (Andrzej Hajda).
Changes in v2:
- Remove edp panel specific dt-binding entries. Only keep bridge specific entries (Sean Paul).
- Remove custom-modes dt entry since its usage is removed from driver also (Sean Paul).
- Remove is-pluggable dt entry since this will not be needed anymore (Sean Paul).
Changes in v3:
- Remove irq-gpio dt entry and instead populate is an interrupt property (Rob Herring).
Changes in v4:
- Add link to bridge chip datasheet (Stephen Boyd)
- Add vpll and vcc regulator supply bindings (Stephen Boyd)
- Add ref clk optional dt binding (Stephen Boyd)
- Add gpio-controller optional dt binding (Stephen Boyd)
Changes in v5:
- Use clock property to specify the input refclk (Stephen Boyd).
- Update gpio cell and pwm cell numbers (Stephen Boyd).
Changes in v6:
- Add property to mention the lane mapping scheme and polarity inversion (Stephen Boyd).
Changes in v7:
- Detail description of lane mapping scheme dt property (Andrzej Hajda/ Rob Herring).
- Removed HDP gpio binding, since the bridge uses IRQ signal to determine HPD, and IRQ property is already documented in binding.
Changes in v8:
- Removed unnecessary explanation of lane mapping and polarity dt property, since these are already explained in media/video-interface dt binidng (Rob Herring).
Signed-off-by: Sandeep Panda spanda@codeaurora.org
.../bindings/display/bridge/ti,sn65dsi86.txt | 90 ++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.txt
diff --git a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.txt b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.txt new file mode 100644 index 0000000..601454c --- /dev/null +++ b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.txt @@ -0,0 +1,90 @@ +SN65DSI86 DSI to eDP bridge chip +--------------------------------
+This is the binding for Texas Instruments SN65DSI86 bridge. +http://www.ti.com/general/docs/lit/getliterature.tsp?genericPartNumber=sn65d...
+Required properties: +- compatible: Must be "ti,sn65dsi86" +- reg: i2c address of the chip, 0x2d as per datasheet +- enable-gpios: OF device-tree gpio specification for bridge_en pin (active high)
+- vccio-supply: A 1.8V supply that powers up the digital IOs. +- vpll-supply: A 1.8V supply that powers up the displayport PLL. +- vcca-supply: A 1.2V supply that powers up the analog circuits. +- vcc-supply: A 1.2V supply that powers up the digital core.
+Optional properties: +- interrupts: Specifier for the SN65DSI86 interrupt line.
+- ddc-i2c-bus: phandle of the I2C controller used for DDC EDID probing
+- gpio-controller: Marks the device has a GPIO controller. +- #gpio-cells : Should be two. The first cell is the pin number and
the second cell is used to specify flags.See ../../gpio/gpio.txt for more information.+- #pwm-cells : Should be one. See ../../pwm/pwm.txt for description of
the cell formats.+- clock-names: should be "refclk" +- clocks: Specification for input reference clock. The reference
clock rate must be 12 MHz, 19.2 MHz, 26 MHz, 27 MHz or 38.4 MHz.+- data-lanes: Specification to describe the logical to physical lane
mapping scheme. See ../../media/video-interface.txt for moreinformation.+- lane-polarities: Specification to describe the polarity of physical lanes.
See ../../media/video-interface.txt for more information.
You are still defining the properties here. All you need is:
data-lanes: See ../../media/video-interface.txt
Perhaps you need to say should be 4 lanes, but OTOH everything tends to be 4 lanes.
Rob