On Fri, Oct 16, 2015 at 3:20 PM, Maxime Ripard <[email protected]> wrote: > Hi, > > On Mon, Oct 12, 2015 at 05:42:10PM +0800, Chen-Yu Tsai wrote: >> On Mon, Oct 12, 2015 at 5:30 PM, Maxime Ripard >> <[email protected]> wrote: >> > Hi, >> > >> > On Sat, Oct 10, 2015 at 10:49:00PM +0800, Chen-Yu Tsai wrote: >> >> +&i2c0 { >> >> + /* Available on camera header */ >> >> + pinctrl-names = "default"; >> >> + pinctrl-0 = <&i2c0_pins_a>; >> >> + status = "okay"; >> >> +}; >> >> + >> >> +&i2c1 { >> >> + /* Available on LCD header */ >> >> + pinctrl-names = "default"; >> >> + pinctrl-0 = <&i2c1_pins_a>; >> >> + status = "okay"; >> >> +}; >> > >> > Are those two actually used anywhere on the board itself, or just >> > exposed on the pin headers? >> >> They are exposed as grouped headers. 1 header has all the camera >> related stuff, like the CSI pins, and various voltage sources >> from the PMIC. The other has the LCD pins, resistive touchpanel, >> I2C for capacitive touchpanel, and of course voltage sources. >> >> The LCD header is an FPC connector, while the camera header is >> the common (common for sunxi devboards) 2.0mm pins. I'm not sure >> if there is some common pinout amongst vendors, but at least >> Sinlinx sells their own 7" LCD display w/ CTP, VGA converter, >> and camera modules. I have both the LCD and VGA converter. >> >> Note that these I2C pins have valid external pull-ups. I doubt >> they can be easily re-purposed. > > Still, the policy we've had so far is that if the user can use it for > something else (like a GPIO, which is the case here), we don't do > enforce any default, and the user will make the right choice.
To clarify, unless an actual device is connected, forcing a choice, we won't make that choice for the user, even if the connector is specifically designed for one type of application. Did I get that right? Thanks ChenYu -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
