linux-kernel - Re: [PATCH v2] arm64: dts: verdin-imx8mm: add otg2 pd to usbphy

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Message-ID: <20220822012221.GH149610@dragon>
Date:   Mon, 22 Aug 2022 09:22:21 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Philippe Schenker <dev@...henker.ch>
Cc:     Frieder Schrempf <frieder.schrempf@...tron.de>,
        Peter Chen <peter.chen@...nel.org>,
        Philippe Schenker <philippe.schenker@...adex.com>,
        Fabio Estevam <festevam@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] arm64: dts: verdin-imx8mm: add otg2 pd to usbphy

On Thu, Aug 11, 2022 at 04:07:38PM +0200, Philippe Schenker wrote:
> From: Philippe Schenker <philippe.schenker@...adex.com>
> 
> The Verdin iMX8M Mini System on Module does not have USB-ID signal
> connected on Verdin USB_2 (usbotg2). On Verdin Development board this is
> no problem, as we have connected a USB-Hub that is always connected.
> 
> However, if Verdin USB_2 is desired to be used as a single USB-Host port
> the chipidea driver does not detect if a USB device is plugged into this
> port, due to runtime pm shutting down the PHY.
> 
> Add the power-domain &pgc_otg2 to &usbphynop2 in order to detect
> plugging events and enumerate the usb device.
> 
> Fixes: 6a57f224f734 ("arm64: dts: freescale: add initial support for verdin imx8m mini")
> Signed-off-by: Philippe Schenker <philippe.schenker@...adex.com>

Applied, thanks!