On Tue, Mar 13, 2018 at 09:46:51AM +0100, Harald Geyer wrote: > André Przywara writes: > > On 12/03/18 16:10, Harald Geyer wrote: > > > Add the proper pin group node to reference in board files. > > > > > > Signed-off-by: Harald Geyer <harald@xxxxxxxxx> > > > > That looks correct to me, so: > > > > Reviewed-by: Andre Przywara <andre.przywara@xxxxxxx> > > > > But out of curiosity, what is this used for? In patch 5/5 I see it being > > used, but without a clue for what? Shouldn't enabling an I2C node be > > accompanied by some child node, presenting the device on the bus? > > I guess this I2C is not on some kind of "header" on that laptop? > > I enabled it because the ANX6345 eDP-bridge is on that bus. There is > no linux (mainline) driver for this chip at the moment, the bootloader > initializes it. However I'm using the i2c-dev driver to read (and maybe) > change some register values from user space. > > i2cdetect sees devices at 0x38, 0x39 and 0x3d - all of which might > be the ANX6345. I haven't looked into this in detail. That's alright then, just put a comment in the DT on what this bus is used for. Thanks! Maxime -- Maxime Ripard, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering https://bootlin.com
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