linux-kernel - Re: [RFC PATCH v2 0/3] ARM: dts: Support official Raspberry Pi 7inch touchscreen

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Date:   Tue, 29 Mar 2022 10:15:40 -0400
From:   Detlev Casanova <detlev.casanova@...labora.com>
To:     linux-kernel@...r.kernel.org
Cc:     Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        soc@...nel.org
Subject: Re: [RFC PATCH v2 0/3] ARM: dts: Support official Raspberry Pi 7inch touchscreen

On Monday, February 21, 2022 9:01:14 A.M. EDT Detlev Casanova wrote:
> Add a devicetree overlay to support the official Raspberry Pi 7inch
> touchscreen.
> 
> This also demuxes the i2c0 controller to support both pinctrls.
> 
> Changes in v2:
>  * The device tree in now an overlay
>  * The i2c demux patch is kept for now to have a working patch set. It has
>    not been merged yet in [1].
>  * The device tree overlay doesn't use fragments. It is working as is
>    but not enough literature was found to go one way or the other.
> 
> [1] https://www.spinics.net/lists/arm-kernel/msg944330.html
> 
> Detlev Casanova (3):
>   ARM: dts: bcm2*: Demux i2c0 with a pinctrl
>   of: Add support for -@ when compiling overlays
>   ARM: dto: Add bcm2711-rpi-7-inches-ts.dts overlay
> 
>  arch/arm/boot/dts/Makefile                    |   4 +
>  arch/arm/boot/dts/bcm2711-rpi-4-b.dts         |   1 +
>  arch/arm/boot/dts/bcm2711.dtsi                |   2 +-
>  arch/arm/boot/dts/bcm2835-rpi.dtsi            |   9 +-
>  .../boot/dts/bcm283x-rpi-i2c0mux_0_44.dtsi    |   4 +
>  arch/arm/boot/dts/bcm283x.dtsi                |  26 +++-
>  arch/arm/boot/dts/overlays/Makefile           |   3 +
>  .../dts/overlays/bcm2711-rpi-7-inches-ts.dts  | 125 ++++++++++++++++++
>  arch/arm64/boot/dts/broadcom/Makefile         |   4 +
>  .../arm64/boot/dts/broadcom/overlays/Makefile |   3 +
>  .../overlays/bcm2711-rpi-7-inches-ts.dts      |   2 +
>  drivers/of/Kconfig                            |   8 ++
>  scripts/Makefile.lib                          |   9 +-
>  13 files changed, 193 insertions(+), 7 deletions(-)
>  create mode 100644 arch/arm/boot/dts/bcm283x-rpi-i2c0mux_0_44.dtsi
>  create mode 100644 arch/arm/boot/dts/overlays/Makefile
>  create mode 100644 arch/arm/boot/dts/overlays/bcm2711-rpi-7-inches-ts.dts
>  create mode 100644 arch/arm64/boot/dts/broadcom/overlays/Makefile
>  create mode 100644
> arch/arm64/boot/dts/broadcom/overlays/bcm2711-rpi-7-inches-ts.dts

Hello,

Any comments on this ?

Regards,

Detlev.