On Mon, 24 Feb 2020 10:06:04 +0100, Maxime Ripard wrote: > The HDMI blocks in the BCM2771 have an i2c controller to retrieve the > EDID. This block is split into two parts, the BSC and the AUTO_I2C, > lying in two separate register areas. > > The AUTO_I2C block has a mailbox-like interface and will take away the > BSC control from the CPU if enabled. However, the BSC is the actually > the same controller than the one supported by the brcmstb driver, and > the AUTO_I2C doesn't really bring any immediate benefit. > > We can model it in the DT as a single device with two register range, > which will allow us to use or or the other in the driver without > changing anything in the DT. > > Cc: Kamal Dasu <kdasu.kdev@xxxxxxxxx> > Cc: Florian Fainelli <f.fainelli@xxxxxxxxx> > Cc: Rob Herring <robh+dt@xxxxxxxxxx> > Cc: Wolfram Sang <wsa@xxxxxxxxxxxxx> > Cc: bcm-kernel-feedback-list@xxxxxxxxxxxx > Cc: linux-i2c@xxxxxxxxxxxxxxx > Cc: devicetree@xxxxxxxxxxxxxxx > Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx> > --- > Documentation/devicetree/bindings/i2c/brcm,brcmstb-i2c.yaml | 40 ++++++- > 1 file changed, 39 insertions(+), 1 deletion(-) > Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
