linux-kernel - Re: [RESEND, v14 1/3] dt-bindings: spmi: modify the constraint of reg property

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Date:   Fri, 12 Nov 2021 09:19:36 -0600
From:   Rob Herring <robh@...nel.org>
To:     James Lo <james.lo@...iatek.com>
Cc:     Stephen Boyd <sboyd@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Hsin-Hsiung Wang <hsin-hsiung.wang@...iatek.com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, srv_heupstream@...iatek.com,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [RESEND, v14 1/3] dt-bindings: spmi: modify the constraint of
 reg property

On Fri, Nov 12, 2021 at 01:54:08PM +0800, James Lo wrote:
> The constraint of reg may larger than 1, so we modify to
> 'minItem: 1' and 'maxItem: 2'.
> And adds documentation for the SPMI controller found on
> Mediatek SoCs.
> 
> Merge [RESEND,v13,2/4] into [RESEND,v13,1/4] for fix yaml
> error.
> [RESEND,v13,1/4] :
> dt-bindings: spmi: modify the constraint of reg property
> [RESEND,v13,2/4] :
> dt-bindings: spmi: document binding for the Mediatek SPMI
> controller

Combining is not the right thing to do.

> 
> Signed-off-by: James Lo <james.lo@...iatek.com>
> Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@...iatek.com>
> ---
>  .../bindings/spmi/mtk,spmi-mtk-pmif.yaml      | 76 +++++++++++++++++++
>  .../devicetree/bindings/spmi/spmi.yaml        |  3 +-
>  2 files changed, 78 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/devicetree/bindings/spmi/mtk,spmi-mtk-pmif.yaml
> 
> diff --git a/Documentation/devicetree/bindings/spmi/mtk,spmi-mtk-pmif.yaml b/Documentation/devicetree/bindings/spmi/mtk,spmi-mtk-pmif.yaml
> new file mode 100644
> index 000000000000..2445c5e0b0ef
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spmi/mtk,spmi-mtk-pmif.yaml
> @@ -0,0 +1,76 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/spmi/mtk,spmi-mtk-pmif.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek SPMI Controller Device Tree Bindings
> +
> +maintainers:
> +  - Hsin-Hsiung Wang <hsin-hsiung.wang@...iatek.com>
> +
> +description: |+
> +  On MediaTek SoCs the PMIC is connected via SPMI and the controller allows
> +  for multiple SoCs to control a single SPMI master.
> +
> +allOf:
> +  - $ref: "spmi.yaml"
> +
> +properties:
> +  compatible:
> +    enum:
> +      - mediatek,mt6873-spmi
> +      - mediatek,mt8195-spmi
> +
> +  reg:
> +    maxItems: 2
> +
> +  reg-names:
> +    items:
> +      - const: pmif
> +      - const: spmimst
> +
> +  clocks:
> +    minItems: 3
> +    maxItems: 3
> +
> +  clock-names:
> +    items:
> +      - const: pmif_sys_ck
> +      - const: pmif_tmr_ck
> +      - const: spmimst_clk_mux
> +
> +  assigned-clocks:
> +    maxItems: 1
> +
> +  assigned-clock-parents:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - reg-names
> +  - clocks
> +  - clock-names
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/mt8192-clk.h>
> +
> +    spmi: spmi@...27000 {
> +        compatible = "mediatek,mt6873-spmi";
> +        reg = <0x10027000 0xe00>,
> +              <0x10029000 0x100>;
> +        reg-names = "pmif", "spmimst";
> +        clocks = <&infracfg CLK_INFRA_PMIC_AP>,
> +                 <&infracfg CLK_INFRA_PMIC_TMR>,
> +                 <&topckgen CLK_TOP_SPMI_MST_SEL>;
> +        clock-names = "pmif_sys_ck",
> +                      "pmif_tmr_ck",
> +                      "spmimst_clk_mux";
> +        assigned-clocks = <&topckgen CLK_TOP_PWRAP_ULPOSC_SEL>;
> +        assigned-clock-parents = <&topckgen CLK_TOP_OSC_D10>;
> +    };
> +...
> diff --git a/Documentation/devicetree/bindings/spmi/spmi.yaml b/Documentation/devicetree/bindings/spmi/spmi.yaml
> index 1d243faef2f8..f29183a45adc 100644
> --- a/Documentation/devicetree/bindings/spmi/spmi.yaml
> +++ b/Documentation/devicetree/bindings/spmi/spmi.yaml
> @@ -25,7 +25,8 @@ properties:
>      pattern: "^spmi@.*"
>  
>    reg:
> -    maxItems: 1
> +    maxItems: 2
> +    minItems: 1

'reg' is controller specific so we shouldn't even be specifying it here. 
Just remove it.

>  
>    "#address-cells":
>      const: 2
> -- 
> 2.18.0
> 
>