Re: [PATCH 7/7] ARM: dts: at91: sama5d4: add vdec0 component

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Hi Emil,

So nice to see this support! Thank you so much for handling that.

Little comments below...

On 08/03/2021 at 14:07, Emil Velikov wrote:
  Hi Ezequiel,

Thanks for the prompt reply

On Sat, 6 Mar 2021 at 11:25, Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx> wrote:

(adding another Nicolas)

Hi Emil,

Thanks a lot for the patch.

On Fri, 2021-03-05 at 18:39 +0000, Emil Velikov wrote:
From: Emil Velikov <emil.velikov@xxxxxxxxxxxxx>

The SoC features a Hantro G1 compatible video decoder.

Cc: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>
Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
Cc: linux-media@xxxxxxxxxxxxxxx
Cc: linux-rockchip@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Emil Velikov <emil.velikov@xxxxxxxxxxxxx>
---
  arch/arm/boot/dts/sama5d4.dtsi                |   9 ++

Usually device-tree changes go to their own patch.

The new compatible string "atmel,sama5d4-vdec" needs

Nitpicking: I would use "microchip,sama5d4-vdec". We tend to use the microchip name for new DT bidings and compatibility strings.

an update to the DT bindings, see Documentation/devicetree/bindings/media/nxp,imx8mq-vpu.yaml
for an example.

DT bindings change should also go to a separate
patch, see Documentation/devicetree/bindings/submitting-patches.rst.

Will do. Thanks

  arch/arm/configs/sama5_defconfig              |   3 +

Better if config changes are a separate patch.

But also, the driver is in staging and we haven't enabled
in ARM64 defconfig. Let's leave that decision to the machine
maintainer to decide.

Makes sense. Will keep it separate patch for completeness sake, with
explicit note.
ARM/Microchip (AT91) SoC maintainers will be in CC list and will defer
the decision to them.

I'm fine with having a "staging" component. Maybe add the hantro vdec as a module instead.

Best regards,
--
Nicolas Ferre



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