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Message-ID: <1604372472.31607.18.camel@mhfsdcap03>
Date: Tue, 3 Nov 2020 11:01:12 +0800
From: Chunfeng Yun <chunfeng.yun@...iatek.com>
To: Macpaul Lin <macpaul.lin@...iatek.com>
CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Rob Herring <robh+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
"Mathias Nyman" <mathias.nyman@...el.com>,
<linux-usb@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>,
"Ainge Hsu" <ainge.hsu@...iatek.com>,
Eddie Hung <eddie.hung@...iatek.com>,
"Mediatek WSD Upstream" <wsd_upstream@...iatek.com>,
Macpaul Lin <macpaul@...il.com>
Subject: Re: [PATCH 1/2] dt-bindings: usb: mediatek,mtk-xhci: add
keep-clock-on
Hi Macpaul,
On Mon, 2020-11-02 at 15:18 +0800, Macpaul Lin wrote:
> Option "mediatek,keep-clock-on" means to keep clock on during system
> suspend and resume. Some platform will flush register settings if clock has
> been disabled when system is suspended. Set this option to avoid clock off.
>
> Signed-off-by: Macpaul Lin <macpaul.lin@...iatek.com>
> ---
> .../devicetree/bindings/usb/mediatek,mtk-xhci.yaml | 7 +++++++
This depends on reviewing patch:
https://patchwork.kernel.org/project/linux-mediatek/patch/20201014014434.62239-6-chunfeng.yun@mediatek.com/
[v2,6/8] dt-bindings: usb: convert mediatek, mtk-xhci.txt to YAML schema
Please add it after "---", thanks
> 1 file changed, 7 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
> index ea696c8..a956dde 100644
> --- a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
> +++ b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
> @@ -104,6 +104,12 @@ properties:
> description: enable USB remote wakeup, see power/wakeup-source.txt
> type: boolean
>
> + mediatek,keep-clock-on:
> + description: |
> + Keep clock on during system suspend and resume. Some platform will flush
> + register settings if clock has been disabled when system is suspended.
> + type: boolean
> +
> mediatek,syscon-wakeup:
> $ref: /schemas/types.yaml#/definitions/phandle-array
> maxItems: 1
> @@ -175,6 +181,7 @@ examples:
> imod-interval-ns = <10000>;
> mediatek,syscon-wakeup = <&pericfg 0x400 1>;
> wakeup-source;
> + mediatek,keep-clock-on;
> usb3-lpm-capable;
> };
> ...
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