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Message-ID: <8d4e2110-4e43-06c4-126d-22c29050f13e@linaro.org>
Date: Thu, 24 Aug 2023 18:16:44 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Emmanuel Gil Peyrot <linkmauve@...kmauve.fr>
Cc: azkali <a.ffcc7@...il.com>, Adam Jiang <chaoj@...dia.com>,
CTCaer <ctcaer@...il.com>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Derek Kiernan <derek.kiernan@....com>,
Dragan Cvetic <dragan.cvetic@....com>,
Arnd Bergmann <arnd@...db.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: misc: rohm,bm92txx: Add BM92Txx support
On 24/08/2023 17:30, Emmanuel Gil Peyrot wrote:
> The BM92T36 is used in the Nintendo Switch as its USB-C Power Delivery
> controller.
>
> Signed-off-by: Emmanuel Gil Peyrot <linkmauve@...kmauve.fr>
> ---
> .../bindings/misc/rohm,bm92txx.yaml | 67 +++++++++++++++++++
> MAINTAINERS | 5 ++
> 2 files changed, 72 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/misc/rohm,bm92txx.yaml
That's not misc device but usb, so please put it in usb.
>
> diff --git a/Documentation/devicetree/bindings/misc/rohm,bm92txx.yaml b/Documentation/devicetree/bindings/misc/rohm,bm92txx.yaml
> new file mode 100644
> index 000000000000..0322a7f096f0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/misc/rohm,bm92txx.yaml
> @@ -0,0 +1,67 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +# Copyright (C) 2023 Emmanuel Gil Peyrot
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/misc/rohm,bm92txx.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: BM92Txx USB-C Power Delivery Controller
> +
> +maintainers:
> + - Emmanuel Gil Peyrot <linkmauve@...kmauve.fr>
> +
> +properties:
> + compatible:
> + enum:
> + - rohm,bm92t10
> + - rohm,bm92t20
> + - rohm,bm92t30
> + - rohm,bm92t36
> + - rohm,bm92t50
Your driver suggests they are fully compatible.
> +
> + reg:
> + maxItems: 1
> +
> + rohm,dp-signal-toggle-on-resume:
> + type: boolean
> + description: |
> + Do a toggle on resume instead of disable in suspend and enable in resume,
> + because this also disables the LED effects.
That's OS policy, not suitable for DT. Drop the property.
> +
> + rohm,led-static-on-suspend:
> + type: boolean
> + description: Dim or breathing dock LED.
Ditto
> +
> + rohm,dock-power-limit-disable:
> + type: boolean
> + description: Disable the power limit in dock mode.
Your description copies property name, so it is not much useful. Why
this is board-configurable?
> +
> + rohm,dp-alerts-enable:
> + type: boolean
> + description: Enable DisplayPort alerts.
Same questions.
> +
> + rohm,pd-5v-current-limit-ma:
> + $ref: /schemas/types.yaml#/definitions/uint32
Use common property units.
> + default: 2000
> + description: Current limit in mA when voltage is 5V.
> +
You miss connector, so binding is incomplete. All these properties look
duplicating connector properties.
> + rohm,pd-9v-current-limit-ma:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + default: 2000
> + description: Current limit in mA when voltage is 9V.
> +
> + rohm,pd-12v-current-limit-ma:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + default: 1500
> + description: Current limit in mA when voltage is 12V.
> +
> + rohm,pd-15v-current-limit-ma:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + default: 1200
> + description: Current limit in mA when voltage is 15V.
> +
> +required:
> + - compatible
> + - reg
> +
> +additionalProperties: false
Missing example. You must have and it must be complete.
Best regards,
Krzysztof
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