From: Shawn Guo <shawnguo@kernel.org>
To: Fabio Estevam <festevam@denx.de>
Cc: linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] ARM: dts: imx7d-smegw01: Describe USBOTG1 as host
Date: Mon, 13 Mar 2023 22:14:19 +0800 [thread overview]
Message-ID: <20230313141419.GR143566@dragon> (raw)
In-Reply-To: <44962c949658501da108fe92a4186930@denx.de>
On Mon, Mar 13, 2023 at 06:52:32AM -0300, Fabio Estevam wrote:
> Hi Shawn,
>
> On 13/03/2023 05:08, Shawn Guo wrote:
> > On Thu, Feb 09, 2023 at 10:04:29AM -0300, Fabio Estevam wrote:
> > > The USBOTG1 port will always operate in host mode in Linux,
> >
> > in Linux? It could operate in otg mode in bootloader or other OS?
>
> Yes, in U-Boot it can operate in OTG mode where it can be used in serial
> download mode.
>
> In Linux, the USB port only operates in host mode.
What stops the USB port from operating in OTG mode?
That doesn't sound right, as DT is a description of hardware capability
rather than Linux.
Shawn
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prev parent reply other threads:[~2023-03-13 14:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-09 13:04 [PATCH] ARM: dts: imx7d-smegw01: Describe USBOTG1 as host Fabio Estevam
2023-03-13 8:08 ` Shawn Guo
2023-03-13 9:52 ` Fabio Estevam
2023-03-13 14:14 ` Shawn Guo [this message]
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