| Message ID | 20221216004500.4263-1-laurent.pinchart+renesas@ideasonboard.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | None | expand |
Hi Laurent On Fri, Dec 16, 2022 at 02:45:00AM +0200, Laurent Pinchart wrote: > The I2C speed on the remote side (the I2C master bus of the connected > serializers) is configurable, and doesn't need to match the speed of the > local bus (the slave bus of the MAX9286). All remote buses must use the > same speed, and the MAX9286 needs to be programmed accordingly. Add a > new DT property to select the speed to make it configurable. > > Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> > Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Thanks j > --- > Changes since v3: > > - Drop the property type > - Add maxim,i2c-remote-bus-hz property to example > > Changes since v2: > > - Rename property to maxim,i2c-remote-bus-hz > - Specify the property type > --- > .../devicetree/bindings/media/i2c/maxim,max9286.yaml | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml > index 4f28690eabcd..75c2d8b8c809 100644 > --- a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml > +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml > @@ -50,6 +50,13 @@ properties: > '#gpio-cells': > const: 2 > > + maxim,i2c-remote-bus-hz: > + enum: [ 8470, 28300, 84700, 105000, 173000, 339000, 533000, 837000 ] > + default: 105000 > + description: | > + The I2C clock frequency for the remote I2C buses. The value must match > + the configuration of the remote serializers. > + > maxim,reverse-channel-microvolt: > minimum: 30000 > maximum: 200000 > @@ -234,6 +241,7 @@ examples: > gpio-controller; > #gpio-cells = <2>; > > + maxim,i2c-remote-bus-hz = <339000>; > maxim,reverse-channel-microvolt = <170000>; > > ports { > -- > Regards, > > Laurent Pinchart >
diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml index 4f28690eabcd..75c2d8b8c809 100644 --- a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml @@ -50,6 +50,13 @@ properties: '#gpio-cells': const: 2 + maxim,i2c-remote-bus-hz: + enum: [ 8470, 28300, 84700, 105000, 173000, 339000, 533000, 837000 ] + default: 105000 + description: | + The I2C clock frequency for the remote I2C buses. The value must match + the configuration of the remote serializers. + maxim,reverse-channel-microvolt: minimum: 30000 maximum: 200000 @@ -234,6 +241,7 @@ examples: gpio-controller; #gpio-cells = <2>; + maxim,i2c-remote-bus-hz = <339000>; maxim,reverse-channel-microvolt = <170000>; ports {