Hi, On Tue, Mar 18, 2025 at 8:56 AM Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> wrote: > > Read out and check the ID registers, so we can bail out if I2C > communication does not work or if the device is unknown. Tested on a > Renesas GrayHawk board (R-Car V4M) by using a wrong I2C address and by > not enabling RuntimePM for the device. > > Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> > --- > > Changes since v2: > * switched to a new approach suggested by Doug (Thanks!). We add a > dedicated read instead of using the first read. This prevents creating > the aux devices. As a side-gain, we check now if the chip at the address > is really the one we want to support. > > drivers/gpu/drm/bridge/ti-sn65dsi86.c | 12 ++++++++++++ > 1 file changed, 12 insertions(+) Looks good to me. Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
