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Date:   Mon, 23 Mar 2020 09:40:44 +0100
From:   Maxime Ripard <maxime@cerno.tech>
To:     Florian Fainelli <f.fainelli@gmail.com>
Cc:     Rob Herring <robh@kernel.org>,
        linux-arm-kernel@lists.infradead.org,
        Mark Rutland <mark.rutland@arm.com>,
        Ray Jui <rjui@broadcom.com>,
        Scott Branden <sbranden@broadcom.com>,
        "maintainer:BROADCOM IPROC ARM ARCHITECTURE" 
        <bcm-kernel-feedback-list@broadcom.com>,
        Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
        Sugaya Taichi <sugaya.taichi@socionext.com>,
        Andrew Jeffery <andrew@aj.id.au>,
        Arnd Bergmann <arnd@arndb.de>, Joel Stanley <joel@jms.id.au>,
        Vinod Koul <vkoul@kernel.org>,
        "james.tai" <james.tai@realtek.com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@vger.kernel.org>,
        open list <linux-kernel@vger.kernel.org>,
        "moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" 
        <linux-rpi-kernel@lists.infradead.org>
Subject: Re: [PATCH v2 12/12] dt-bindings: arm: bcm: Convert BCM2835 firmware
 binding to YAML
Message-ID: <20200323084044.dziwbk7pugoy73yh@gilmour.lan>
References: <20200204235552.7466-1-f.fainelli@gmail.com>
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Hi Florian,

On Sun, Mar 22, 2020 at 02:35:17PM -0700, Florian Fainelli wrote:
>
>
> On 2/6/2020 11:23 AM, Rob Herring wrote:
> > On Tue, Feb 04, 2020 at 03:55:52PM -0800, Florian Fainelli wrote:
> >> Convert the Raspberry Pi BCM2835 firmware binding document to YAML.
> >> Verified with dt_binding_check and dtbs_check.
> >>
> >> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
> >> ---
> >>  .../arm/bcm/raspberrypi,bcm2835-firmware.txt  | 14 --------
> >>  .../arm/bcm/raspberrypi,bcm2835-firmware.yaml | 33 +++++++++++++++++++
> >>  2 files changed, 33 insertions(+), 14 deletions(-)
> >>  delete mode 100644 Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.txt
> >>  create mode 100644 Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
> >>
> >> diff --git a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.txt b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.txt
> >> deleted file mode 100644
> >> index 6824b3180ffb..000000000000
> >> --- a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.txt
> >> +++ /dev/null
> >> @@ -1,14 +0,0 @@
> >> -Raspberry Pi VideoCore firmware driver
> >> -
> >> -Required properties:
> >> -
> >> -- compatible:		Should be "raspberrypi,bcm2835-firmware"
> >> -- mboxes:		Phandle to the firmware device's Mailbox.
> >> -			  (See: ../mailbox/mailbox.txt for more information)
> >> -
> >> -Example:
> >> -
> >> -firmware {
> >> -	compatible = "raspberrypi,bcm2835-firmware";
> >> -	mboxes = <&mailbox>;
> >> -};
> >> diff --git a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
> >> new file mode 100644
> >> index 000000000000..db355d970f2b
> >> --- /dev/null
> >> +++ b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
> >> @@ -0,0 +1,33 @@
> >> +# SPDX-License-Identifier: GPL-2.0
> >> +%YAML 1.2
> >> +---
> >> +$id: http://devicetree.org/schemas/arm/bcm/raspberrypi,bcm2835-firmware.yaml#
> >> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> >> +
> >> +title: Raspberry Pi VideoCore firmware driver
> >> +
> >> +maintainers:
> >> +  - Eric Anholt <eric@anholt.net>
> >> +  - Stefan Wahren <wahrenst@gmx.net>
> >> +
> >> +properties:
> >> +  compatible:
> >> +    const: raspberrypi,bcm2835-firmware simple-bus
> >                                           ^
> >
> > I need to check for spaces with the meta-schema...
>
> I believe I had tried to use:
>
> const: raspberrypi,bcm2835-firmware
> const: simple-bus
>
> but this did not work, and I had to resort to doing this.

That would be:

compatible:
  items:
    - const: raspberrypi,bcm2835-firmware
    - const: simple-bus

It changes slightly from what the initial binding was saying though,
since it wasn't mentionning simple-bus at all? Is that on purpose?

Maxime

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