Re: [PATCH v2 1/4] dt-bindings: drm/bridge: adv7511: Add regulator bindings

[Laurent Pinchart <laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org>]

Hi Archit,

Thank you for the patch.

On Friday 23 Sep 2016 14:50:27 Archit Taneja wrote:
> Add the regulator supply properties needed by ADV7511 and ADV7533. The
> regulator names are named after the pin names, except for DVDD_3V on
> ADV7511, which is left v3p3 to have the same name as it's on ADV7533.
> 
> ADV7511 has a BGVDD pin for which the voltage to be configured isn't
> clear. This needs to be updated in the document later.
> 
> The regulators are specified as optional properties since there can
> be boards which have a fixed supply directly routed to the pins, and
> these may not be modelled as regulator supplies.
> 
> Cc: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Signed-off-by: Archit Taneja <architt-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
> ---
> v2:
> - Specify regulator supplies for ADV7511 too.
> - Have separate supply entries for AVDD, DVDD, PVDD, A2VDD pins.
> - Add additional BGVDD supply for ADV7511.
> 
>  .../devicetree/bindings/display/bridge/adi,adv7511.txt     | 14 +++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git
> a/Documentation/devicetree/bindings/display/bridge/adi,adv7511.txt
> b/Documentation/devicetree/bindings/display/bridge/adi,adv7511.txt index
> 6532a59..66e6bae 100644
> --- a/Documentation/devicetree/bindings/display/bridge/adi,adv7511.txt
> +++ b/Documentation/devicetree/bindings/display/bridge/adi,adv7511.txt
> @@ -56,6 +56,20 @@ Optional properties:
>  - adi,disable-timing-generator: Only for ADV7533. Disables the internal
> timing generator. The chip will rely on the sync signals in the DSI data
> lanes, rather than generate its own timings for HDMI output.
> +- avdd-supply: A 1.8V supply that powers up the AVDD pin on the chip.
> +- dvdd-supply: A 1.8V supply that powers up the DVDD pin on the chip.
> +- pvdd-supply: A 1.8V supply that powers up the PVDD pin on the chip.
> +- v3p3-supply: A 3.3V supply that powers up the pin called DVDD_3V on
> +  ADV7511 and V3P3 on ADV7533.
> +
> +ADV7511 specific supplies:
> +- bgvdd-supply: Powers the BGVDD pin. The voltage isn't clear from
> +  available datasheets.

It's a 1.8V supply. The ADV7511 hardware user's guide recommends tying it to 
the PVDD supply, so I'm not sure we need a separate supply in DT.

Similarly, the user's guide recommends supplying the AVDD, DVDD and PVDD pins 
with a single 1.8V LDO and three independent filters. We could thus possibly 
combine them into a single 1.8V supply.

> +ADV7533 specific supplies:
> +- a2vdd-supply: 1.8V supply that powers up the A2VDD pin on the chip.
> +- v1p2-supply: A supply that powers up the V1P2 pin on the chip. It can be
> +  either 1.2V or 1.8V.
> 
>  Required nodes:

-- 
Regards,

Laurent Pinchart

--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html