[PATCH 1/7] dt-bindings: pinctrl: Add support for Broadcom STB pin controller

[Stefan Wahren]

Hi,

[add official Raspberry Pi kernel developer list]

Am 31.07.24 um 08:28 schrieb Ivan T. Ivanov:
> It looks like they are few revisions of this chip which varies
> by number of pins. Perhaps not all of them are available on the
> market. Perhaps some of them where early engineering samples,
> I don't know. I decided to keep all of them just in case.
The BCM2711 had also some revisions and we avoided successfully multiple
versions of the RPi 4B DTS. So it would be nice if someone can explain
if C0 & D0 are available in the market? Otherwise we may end up with
multiple versions of the RPi 5 DTS.

I'm missing an explanation in the commit message, what's the difference
between brcm,bcm2712-pinctrl and brcm,bcm2712-aon-pinctrl?

According to the driver brcm,bcm2712-pinctrl is the same as
brcm,bcm2712c0-pinctrl. So the former is more a fallback?

Thanks
>
> Cc: Andrea della Porta <andrea.porta at suse.com>
> Signed-off-by: Ivan T. Ivanov <iivanov at suse.de>
> ---
>   .../pinctrl/brcm,brcmstb-pinctrl.yaml         | 73 +++++++++++++++++++
>   1 file changed, 73 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/pinctrl/brcm,brcmstb-pinctrl.yaml
>
> diff --git a/Documentation/devicetree/bindings/pinctrl/brcm,brcmstb-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/brcm,brcmstb-pinctrl.yaml
> new file mode 100644
> index 000000000000..c5afdb49d784
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/brcm,brcmstb-pinctrl.yaml
> @@ -0,0 +1,73 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pinctrl/brcm,brcmstb-pinctrl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Broadcom STB family pin controller
> +
> +maintainers:
> +  - Ivan T. Ivanov <iivanov at suse.de>
> +
> +description:
> +  Broadcom's STB family memory-mapped pin controller.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - brcm,bcm2712-pinctrl
> +      - brcm,bcm2712-aon-pinctrl
> +      - brcm,bcm2712c0-pinctrl
> +      - brcm,bcm2712c0-aon-pinctrl
> +      - brcm,bcm2712d0-pinctrl
> +      - brcm,bcm2712d0-aon-pinctrl
> +
>