Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> writes: > Hi Eric, > > Thank you for the patch. > > On Thursday 11 May 2017 16:56:23 Eric Anholt wrote: >> The Raspberry Pi 7" Touchscreen is a DPI touchscreen panel with >> DSI->DPI bridge and touchscreen controller integrated, that connects >> to the Raspberry Pi through its 15-pin "DSI" connector (some lines are >> DSI, some lines are I2C). >> >> This device is represented in the DT as three nodes (DSI device, I2C >> device, panel). Input will be left to a separate binding later, as it >> will be a basic I2C client device. >> >> Signed-off-by: Eric Anholt <eric@xxxxxxxxxx> >> --- >> .../raspberrypi,7inch-touchscreen-bridge.txt | 68 +++++++++++++++++++ >> .../panel/raspberrypi,7inch-touchscreen-panel.txt | 7 +++ >> 2 files changed, 75 insertions(+) >> create mode 100644 >> Documentation/devicetree/bindings/display/bridge/raspberrypi,7inch-touchscr >> een-bridge.txt create mode 100644 >> Documentation/devicetree/bindings/display/panel/raspberrypi,7inch-touchscre >> en-panel.txt >> >> diff --git >> a/Documentation/devicetree/bindings/display/bridge/raspberrypi,7inch-touchs >> creen-bridge.txt >> b/Documentation/devicetree/bindings/display/bridge/raspberrypi,7inch-touchs >> creen-bridge.txt new file mode 100644 >> index 000000000000..a5669beaf68f >> --- /dev/null >> +++ >> b/Documentation/devicetree/bindings/display/bridge/raspberrypi,7inch-touchs >> creen-bridge.txt @@ -0,0 +1,68 @@ >> +Official 7" (800x480) Raspberry Pi touchscreen panel's bridge. >> + >> +This DSI panel contains: >> + >> +- TC358762 DSI->DPI bridge >> +- Atmel microcontroller on I2C for power sequencing the DSI bridge and >> + controlling backlight >> +- Touchscreen controller on I2C for touch input >> + >> +and this covers the TC358762 bridge and Atmel microcontroller, while >> +../panel/raspberrypi,7inch-touchscreen-panel.txt covers the panel. > > The TC358762 is a standalone bridge that doesn't depend on the ATTiny > microcontroller used by the RPI. As it's usable standalone, I believe this > binding should be split in two. Do you have a plan for how I would implement a driver on top of that binding change, though? Note that we don't program the Toshiba directly, we only send commands to the Atmel.
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