Hi Jacopo,
On Monday, 21 May 2018 12:57:05 EEST jacopo mondi wrote:
> On Fri, May 18, 2018 at 06:12:15PM +0300, Laurent Pinchart wrote:
> > On Friday, 18 May 2018 17:47:57 EEST Jacopo Mondi wrote:
> >> Describe CVBS video input through analog video decoder ADV7180
> >> connected to video input interface VIN4.
> >>
> >> The video input signal path is shared with HDMI video input, and
> >> selected by on-board switches SW-53 and SW-54 with CVBS input selected
> >> by the default switches configuration.
> >>
> >> Signed-off-by: Jacopo Mondi <jacopo+rene...@jmondi.org>
> >> Reviewed-by: Niklas Söderlund <niklas.soderlund+rene...@ragnatech.se>
> >>
> >> ---
> >> v2 -> v3:
> >> - Add comment to describe the shared input video path
> >> - Add my SoB and Niklas' R-b tags
> >> ---
> >>
> >> arch/arm64/boot/dts/renesas/r8a77995-draak.dts | 42 +++++++++++++++++++
> >> 1 file changed, 42 insertions(+)
> >>
> >> diff --git a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
> >> b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts index 9d73de8..95745fc
> >> 100644
> >> --- a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
> >> +++ b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
> >> @@ -142,6 +142,11 @@
> >> groups = "usb0";
> >> function = "usb0";
> >> };
> >> +
> >> + vin4_pins_cvbs: vin4 {
> >> + groups = "vin4_data8", "vin4_sync", "vin4_clk";
> >> + function = "vin4";
> >> + };
> >> };
> >>
> >> &i2c0 {
> >> @@ -154,6 +159,23 @@
> >> reg = <0x50>;
> >> pagesize = <8>;
> >> };
> >> +
> >> + analog-video@20 {
> >> + compatible = "adi,adv7180";
> >> + reg = <0x20>;
> >> +
> >> + port {
> >
> > The adv7180 DT bindings document the output port as 3 or 6 (respectively
> > for the CP and ST versions of the chip). You should thus number the port.
> > Apart from that the patch looks good.
>
> I admit I have barely copied this from Gen-2 boards DTS, but reading
> the driver code and binding description again, I think this is
> correct, as the output port numbering and mandatory input port (which
> is missing here) only apply to adv7180cp/st chip versions.
>
> Here we describe plain adv7180, no need to number output ports afaict.
Indeed, my bad.
Shouldn't you however use "adi,adv7180cp" as that's the chip we are using ?
The "adi,adv7180" has no port documented in its DT bindings, so it shouldn't
have any port node at all.
> >> + /*
> >> + * The VIN4 video input path is shared between
> >> + * CVBS and HDMI inputs through SW[49-54] switches.
> >> + *
> >> + * CVBS is the default selection, link it to VIN4 here.
> >> + */
> >> + adv7180_out: endpoint {
> >> + remote-endpoint = <&vin4_in>;
> >> + };
> >> + };
> >> + };
> >> };
> >>
> >> &i2c1 {
> >> @@ -246,3 +268,23 @@
> >> timeout-sec = <60>;
> >> status = "okay";
> >> };
> >> +
> >> +&vin4 {
> >> + pinctrl-0 = <&vin4_pins_cvbs>;
> >> + pinctrl-names = "default";
> >> +
> >> + status = "okay";
> >> +
> >> + ports {
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> +
> >> + port@0 {
> >> + reg = <0>;
> >> +
> >> + vin4_in: endpoint {
> >> + remote-endpoint = <&adv7180_out>;
> >> + };
> >> + };
> >> + };
> >> +};
--
Regards,
Laurent Pinchart
