linux-kernel - Re: [PATCH 4/8] dt-bindings: arm: mediatek: Add new document bindings for APU

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Date:   Mon, 12 Apr 2021 14:44:55 +0800
From:   Flora Fu <flora.fu@...iatek.com>
To:     Rob Herring <robh@...nel.org>
CC:     Matthias Brugger <matthias.bgg@...il.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Pi-Cheng Chen <pi-cheng.chen@...iatek.com>,
        Chiawen Lee <chiawen.lee@...iatek.com>,
        Chun-Jie Chen <chun-jie.chen@...iatek.com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, <linux-clk@...r.kernel.org>,
        Flora Fu <flora.fu@...iatek.com>
Subject: Re: [PATCH 4/8] dt-bindings: arm: mediatek: Add new document
 bindings for APU

On Fri, 2021-04-09 at 13:25 -0500, Rob Herring wrote:
> On Wed, Apr 07, 2021 at 11:28:02AM +0800, Flora Fu wrote:
> > Document the apusys bindings.
> > 
> > Signed-off-by: Flora Fu <flora.fu@...iatek.com>
> > ---
> >  .../arm/mediatek/mediatek,apusys.yaml         | 56 +++++++++++++++++++
> >  1 file changed, 56 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/arm/mediatek/mediatek,apusys.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,apusys.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,apusys.yaml
> > new file mode 100644
> > index 000000000000..dc04a46f1bad
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,apusys.yaml
> > @@ -0,0 +1,56 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: https://urldefense.com/v3/__http://devicetree.org/schemas/arm/mediatek/mediatek,apusys.yaml*__;Iw!!CTRNKA9wMg0ARbw!3ryKFTA2CvsVss4Pt2ZOG7wv4jgR-2LPxuGn30IxFmpxoxSRdzNdf8FrAYYvZWcw$ 
> > +$schema: https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.yaml*__;Iw!!CTRNKA9wMg0ARbw!3ryKFTA2CvsVss4Pt2ZOG7wv4jgR-2LPxuGn30IxFmpxoxSRdzNdf8FrARlhCQ0w$ 
> > +
> > +title: MediaTek APUSYS Controller
> > +
> > +maintainers:
> > +  - Flora Fu <flora.fu@...iatek.com>
> > +
> > +description:
> > +  The Mediatek apusys controller provides functional configurations and clocks
> > +  to the system.
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - enum:
> > +          - mediatek,mt8192-apu_mbox
> > +          - mediatek,mt8192-apu_conn
> > +          - mediatek,mt8192-apu_vcore
> 
> s/_/-/
> 

OK. I will update expression strings in the next version.

> > +      - const: syscon
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  '#clock-cells':
> > +    const: 1
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    apu_mbox: apu_mbox@...00000 {
> 
> mailbox@...? Is this a mailbox provider?
> 

Yes, the apu_mbox is the for setup mailbox in the APU hardware.

> > +        compatible = "mediatek,mt8192-apu_mbox", "syscon";
> > +        reg = <0x19000000 0x1000>;
> > +    };
> > +
> > +  - |
> > +    apu_conn: apu_conn@...20000 {
> > +        compatible = "mediatek,mt8192-apu_conn", "syscon";
> > +        reg = <0x19020000 0x1000>;
> > +        #clock-cells = <1>;
> > +    };
> > +
> > +  - |
> > +    apu_vcore: apu_vcore@...29000 {
> > +        compatible = "mediatek,mt8192-apu_vcore", "syscon";
> > +        reg = <0x19029000 0x1000>;
> > +        #clock-cells = <1>;
> > +    };
> > -- 
> > 2.18.0
> >