linux-kernel - Re: [PATCH v12 4/9] dt-bindings: clock: Add bindings for SP7021 clock driver

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Date:   Thu, 31 Mar 2022 22:21:24 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Qin Jian <qinjian@...lus1.com>, krzysztof.kozlowski@...onical.com
Cc:     robh+dt@...nel.org, mturquette@...libre.com, sboyd@...nel.org,
        tglx@...utronix.de, maz@...nel.org, p.zabel@...gutronix.de,
        linux@...linux.org.uk, arnd@...db.de,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH v12 4/9] dt-bindings: clock: Add bindings for SP7021 clock
 driver

On 31/03/2022 10:29, Qin Jian wrote:
> Add documentation to describe Sunplus SP7021 clock driver bindings.
> 
> Signed-off-by: Qin Jian <qinjian@...lus1.com>
> ---
> Move 'reg' after 'compatible'
> ---
>  .../bindings/clock/sunplus,sp7021-clkc.yaml   |  39 ++++++
>  MAINTAINERS                                   |   2 +
>  include/dt-bindings/clock/sp-sp7021.h         | 112 ++++++++++++++++++
>  3 files changed, 153 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/sunplus,sp7021-clkc.yaml
>  create mode 100644 include/dt-bindings/clock/sp-sp7021.h
> 
> diff --git a/Documentation/devicetree/bindings/clock/sunplus,sp7021-clkc.yaml b/Documentation/devicetree/bindings/clock/sunplus,sp7021-clkc.yaml
> new file mode 100644
> index 000000000..41e73a088
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/sunplus,sp7021-clkc.yaml
> @@ -0,0 +1,39 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (C) Sunplus Co., Ltd. 2021
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/sunplus,sp7021-clkc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Sunplus SP7021 SoC Clock Controller Binding
> +
> +maintainers:
> +  - Qin Jian <qinjian@...lus1.com>
> +
> +properties:
> +  compatible:
> +    const: sunplus,sp7021-clkc
> +
> +  reg:
> +    maxItems: 1
> +
> +  "#clock-cells":
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - "#clock-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +
> +    clkc: clock-controller@...00000 {
> +      compatible = "sunplus,sp7021-clkc";
> +      reg = <0x9c000000 0x280>;
> +      #clock-cells = <1>;
> +    };
> +
> +...
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 26066f199..5d8b420d0 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -2744,8 +2744,10 @@ L:	linux-arm-kernel@...ts.infradead.org (moderated for mon-subscribers)
>  S:	Maintained
>  W:	https://sunplus-tibbo.atlassian.net/wiki/spaces/doc/overview
>  F:	Documentation/devicetree/bindings/arm/sunplus,sp7021.yaml
> +F:	Documentation/devicetree/bindings/clock/sunplus,sp7021-clkc.yaml
>  F:	Documentation/devicetree/bindings/reset/sunplus,reset.yaml
>  F:	drivers/reset/reset-sunplus.c
> +F:	include/dt-bindings/clock/sp-sp7021.h
>  F:	include/dt-bindings/reset/sp-sp7021.h
>  
>  ARM/Synaptics SoC support
> diff --git a/include/dt-bindings/clock/sp-sp7021.h b/include/dt-bindings/clock/sp-sp7021.h
> new file mode 100644
> index 000000000..45dac6de8
> --- /dev/null
> +++ b/include/dt-bindings/clock/sp-sp7021.h
> @@ -0,0 +1,112 @@
> +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
> +/*
> + * Copyright (C) Sunplus Technology Co., Ltd.
> + *       All rights reserved.
> + */
> +#ifndef _DT_BINDINGS_CLOCK_SUNPLUS_SP7021_H
> +#define _DT_BINDINGS_CLOCK_SUNPLUS_SP7021_H
> +
> +#define XTAL			27000000
> +
> +/* plls */
> +#define PLL_A			0
> +#define PLL_E			1
> +#define PLL_E_2P5		2
> +#define PLL_E_25		3
> +#define PLL_E_112P5		4
> +#define PLL_F			5
> +#define PLL_TV			6
> +#define PLL_TV_A		7
> +#define PLL_SYS			8
> +
> +/* gates: mo_clken0 ~ mo_clken9 */
> +#define CLK_SYSTEM		0x10
> +#define CLK_RTC			0x12

YAML looks ok, but here comment from Arnd also applies. These should be
regular decimal numbers incremented by one.

Best regards,
Krzysztof