linux-kernel - Re: [PATCH v3 5/7] dt-bindings: soc: starfive: Add StarFive syscon module

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Message-ID: <014dd7b2-9623-805c-97a6-5b3c5f120b79@starfivetech.com>
Date:   Tue, 9 May 2023 14:23:18 +0800
From:   Xingyu Wu <xingyu.wu@...rfivetech.com>
To:     Conor Dooley <conor@...nel.org>
CC:     <linux-riscv@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        "Michael Turquette" <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Emil Renner Berthing <kernel@...il.dk>,
        Rob Herring <robh+dt@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        "Palmer Dabbelt" <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Hal Feng <hal.feng@...rfivetech.com>,
        William Qiu <william.qiu@...rfivetech.com>,
        <linux-kernel@...r.kernel.org>, <linux-clk@...r.kernel.org>
Subject: Re: [PATCH v3 5/7] dt-bindings: soc: starfive: Add StarFive syscon
 module

On 2023/5/9 3:24, Conor Dooley wrote:
> On Mon, Apr 24, 2023 at 06:15:47PM +0100, Conor Dooley wrote:
>> On Fri, Apr 14, 2023 at 10:41:55AM +0800, Xingyu Wu wrote:
>> > From: William Qiu <william.qiu@...rfivetech.com>
>> > 
>> > Add documentation to describe StarFive System Controller Registers.
>> > 
>> > Signed-off-by: William Qiu <william.qiu@...rfivetech.com>
>> > ---
>> >  .../soc/starfive/starfive,jh7110-syscon.yaml  | 58 +++++++++++++++++++
>> >  MAINTAINERS                                   |  6 ++
>> >  2 files changed, 64 insertions(+)
>> >  create mode 100644 Documentation/devicetree/bindings/soc/starfive/starfive,jh7110-syscon.yaml
>> > 
>> > diff --git a/Documentation/devicetree/bindings/soc/starfive/starfive,jh7110-syscon.yaml b/Documentation/devicetree/bindings/soc/starfive/starfive,jh7110-syscon.yaml
>> > new file mode 100644
>> > index 000000000000..de086e74a229
>> > --- /dev/null
>> > +++ b/Documentation/devicetree/bindings/soc/starfive/starfive,jh7110-syscon.yaml
>> > @@ -0,0 +1,58 @@
>> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> > +%YAML 1.2
>> > +---
>> > +$id: http://devicetree.org/schemas/soc/starfive/starfive,jh7110-syscon.yaml#
>> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> > +
>> > +title: StarFive JH7110 SoC system controller
>> > +
>> > +maintainers:
>> > +  - William Qiu <william.qiu@...rfivetech.com>
>> > +
>> > +description: |
>> > +  The StarFive JH7110 SoC system controller provides register information such
>> > +  as offset, mask and shift to configure related modules such as MMC and PCIe.
>> > +
>> > +properties:
>> > +  compatible:
>> > +    oneOf:
>> > +      - items:
>> > +          - enum:
>> > +              - starfive,jh7110-aon-syscon
>> > +              - starfive,jh7110-sys-syscon
>> > +          - const: syscon
>> > +          - const: simple-mfd
>> > +      - items:
>> > +          - const: starfive,jh7110-stg-syscon
>> > +          - const: syscon
>> > +
>> > +  reg:
>> > +    maxItems: 1
>> > +
>> > +  clock-controller:
>> > +    $ref: /schemas/clock/starfive,jh7110-pll.yaml#
>> > +    type: object
>> > +
>> > +  power-controller:
>> > +    $ref: /schemas/power/starfive,jh7110-pmu.yaml#
>> > +    type: object
>> 
>> My plan was to grab this patch after the merge window, but there's been
>> some back and forth [1] about what exactly should be a power-controller
>> here. Given the merge window is open & I know Emil wants to look at the
>> various clock bits for the JH7110, I don't think there's a pressing need
>> for you to do anything here, but figured I'd at least mention how things
>> are going on this thread too.
> 
> To follow up on this, it transpired in that thread that this node, not a
> child node, should be the power controller.
> 
> Up to you StarFive folk how you wish to resend, but I am fine with it
> being in this series, I shall just not pick up the soc driver patches
> until the resent binding is applied by Stephen.
> 

Thanks. I had discussed with changhuang.liang about this. And I will drop
the 'starfive,jh7110-aon-syscon' and 'power-controller' in next patchset.
Changhuang will take these in his patchset.

Best regards,
Xingyu Wu