Re: [PATCH v6 05/10] dt-bindings: soc: mediatek: convert pwrap documentation

[Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>]

On 25/11/2022 16:10, Alexandre Mergnat wrote:
> - Convert soc/mediatek/pwrap.txt to soc/mediatek/mediatek,pwrap.yaml
> - Add syscon compatible const for mt8186 and mt8195 to match the DTS needs.
> 
> Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
> ---
>  .../devicetree/bindings/leds/leds-mt6323.txt       |   2 +-
>  Documentation/devicetree/bindings/mfd/mt6397.txt   |   2 +-
>  .../bindings/soc/mediatek/mediatek,pwrap.yaml      | 147 +++++++++++++++++++++
>  .../devicetree/bindings/soc/mediatek/pwrap.txt     |  75 -----------
>  4 files changed, 149 insertions(+), 77 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/leds/leds-mt6323.txt b/Documentation/devicetree/bindings/leds/leds-mt6323.txt
> index 45bf9f7d85f3..73353692efa1 100644
> --- a/Documentation/devicetree/bindings/leds/leds-mt6323.txt
> +++ b/Documentation/devicetree/bindings/leds/leds-mt6323.txt
> @@ -9,7 +9,7 @@ MT6323 PMIC hardware.
>  For MT6323 MFD bindings see:
>  Documentation/devicetree/bindings/mfd/mt6397.txt
>  For MediaTek PMIC wrapper bindings see:
> -Documentation/devicetree/bindings/soc/mediatek/pwrap.txt
> +Documentation/devicetree/bindings/soc/mediatek/mediatek,pwrap.yaml
>  
>  Required properties:
>  - compatible : Must be "mediatek,mt6323-led"
> diff --git a/Documentation/devicetree/bindings/mfd/mt6397.txt b/Documentation/devicetree/bindings/mfd/mt6397.txt
> index 79aaf21af8e9..3bee4a42555d 100644
> --- a/Documentation/devicetree/bindings/mfd/mt6397.txt
> +++ b/Documentation/devicetree/bindings/mfd/mt6397.txt
> @@ -13,7 +13,7 @@ MT6397/MT6323 is a multifunction device with the following sub modules:
>  It is interfaced to host controller using SPI interface by a proprietary hardware
>  called PMIC wrapper or pwrap. MT6397/MT6323 MFD is a child device of pwrap.
>  See the following for pwarp node definitions:
> -../soc/mediatek/pwrap.txt
> +../soc/mediatek/mediatek,pwrap.yaml
>  
>  This document describes the binding for MFD device and its sub module.
>  
> diff --git a/Documentation/devicetree/bindings/soc/mediatek/mediatek,pwrap.yaml b/Documentation/devicetree/bindings/soc/mediatek/mediatek,pwrap.yaml
> new file mode 100644
> index 000000000000..3969871eaced
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/mediatek/mediatek,pwrap.yaml
> @@ -0,0 +1,147 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/soc/mediatek/mediatek,pwrap.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek PMIC Wrapper
> +
> +maintainers:
> +  - Flora Fu <flora.fu@mediatek.com>
> +  - Alexandre Mergnat <amergnat@baylibre.com>
> +
> +description:
> +  On MediaTek SoCs the PMIC is connected via SPI. The SPI master interface
> +  is not directly visible to the CPU, but only through the PMIC wrapper
> +  inside the SoC. The communication between the SoC and the PMIC can
> +  optionally be encrypted. Also a non standard Dual IO SPI mode can be
> +  used to increase speed.
> +
> +  IP Pairing
> +
> +  On MT8135 the pins of some SoC internal peripherals can be on the PMIC.
> +  The signals of these pins are routed over the SPI bus using the pwrap
> +  bridge. In the binding description below the properties needed for bridging
> +  are marked with "IP Pairing". These are optional on SoCs which do not support
> +  IP Pairing
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - items:
> +          - enum:
> +              - mediatek,mt2701-pwrap
> +              - mediatek,mt6765-pwrap
> +              - mediatek,mt6779-pwrap
> +              - mediatek,mt6797-pwrap
> +              - mediatek,mt6873-pwrap
> +              - mediatek,mt7622-pwrap
> +              - mediatek,mt8135-pwrap
> +              - mediatek,mt8173-pwrap
> +              - mediatek,mt8183-pwrap
> +              - mediatek,mt8186-pwrap
> +              - mediatek,mt8188-pwrap
> +              - mediatek,mt8195-pwrap
> +              - mediatek,mt8365-pwrap
> +              - mediatek,mt8516-pwrap
> +      - items:
> +          - enum:
> +              - mediatek,mt8186-pwrap
> +              - mediatek,mt8195-pwrap
> +          - const: syscon
> +
> +  reg:
> +    minItems: 1
> +    items:
> +      - description: PMIC wrapper registers
> +      - description: IP pairing registers
> +
> +  reg-names:
> +    minItems: 1
> +    items:
> +      - const: pwrap
> +      - const: pwrap-bridge
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    minItems: 2
> +    items:
> +      - description: SPI bus clock
> +      - description: Main module clock
> +      - description: System module clock
> +      - description: Timer module clock
> +
> +  clock-names:
> +    minItems: 2
> +    items:
> +      - const: spi
> +      - const: wrap
> +      - const: sys
> +      - const: tmr
> +
> +  resets:
> +    minItems: 1
> +    items:
> +      - description: PMIC wrapper reset
> +      - description: IP pairing reset
> +
> +  reset-names:
> +    minItems: 1
> +    items:
> +      - const: pwrap
> +      - const: pwrap-bridge
> +
> +  pmic:
> +    type: object

What's here? Other schema? If not then maybe compatible? What about
description?

> +
> +required:
> +  - compatible
> +  - reg
> +  - reg-names
> +  - interrupts
> +  - clocks
> +  - clock-names
> +
> +dependentRequired:
> +  resets: [reset-names]

Drop.

> +
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: mediatek,mt8365-pwrap
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 4
> +
> +        clock-names:
> +          minItems: 4

else:
???

> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/reset/mt8135-resets.h>
> +
> +    soc {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +        pwrap@1000d000 {
> +            compatible = "mediatek,mt8135-pwrap";
> +            reg = <0 0x1000f000 0 0x1000>,

This does not match your unit address. No warnings when compile testing?

> +                  <0 0x11017000 0 0x1000>;
> +            reg-names = "pwrap", "pwrap-bridge";
> +            interrupts = <GIC_SPI 128 IRQ_TYPE_LEVEL_HIGH>;
> +            clocks = <&clk26m>, <&clk26m>;
> +            clock-names = "spi", "wrap";
> +            resets = <&infracfg MT8135_INFRA_PMIC_WRAP_RST>,
> +                     <&pericfg MT8135_PERI_PWRAP_BRIDGE_SW_RST>;
> +            reset-names = "pwrap", "pwrap-bridge";

Missing pmic. Make your example complete.


Best regards,
Krzysztof