From: Shawn Guo <shawnguo@kernel.org>
To: Chris Healy <cphealy@gmail.com>
Cc: devicetree@vger.kernel.org, s.hauer@pengutronix.de,
linux-kernel@vger.kernel.org, stefan@agner.ch,
robh+dt@kernel.org, festevam@gmail.com,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2] ARM: dts: ZII: Disable HW Ethernet switch reset GPIOs
Date: Mon, 17 Aug 2020 21:29:04 +0800 [thread overview]
Message-ID: <20200817132903.GG16951@dragon> (raw)
In-Reply-To: <20200722203341.578651-1-cphealy@gmail.com>
On Wed, Jul 22, 2020 at 01:33:41PM -0700, Chris Healy wrote:
> From: Chris Healy <cphealy@gmail.com>
>
> Disable Ethernet switch reset GPIO with ZII platforms that have it
> enabled. HW switch reset results in a reset of the copper PHYs
> inside of the switch. We want to avoid this reset of the copper PHYs
> in the switch as this results in unnecessary broader network disruption on
> a soft reboot of the application processor.
>
> With the HW GPIO removed, the switch driver still performs a soft reset of
> the switch core which has been shown to sufficiently meet our needs with
> other ZII platforms that do not have the HW switch reset GPIO defined.
>
> Signed-off-by: Chris Healy <cphealy@gmail.com>
Applied, thanks.
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prev parent reply other threads:[~2020-08-17 13:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-22 20:33 [PATCH v2] ARM: dts: ZII: Disable HW Ethernet switch reset GPIOs Chris Healy
2020-07-22 21:49 ` Fabio Estevam
2020-08-17 13:29 ` Shawn Guo [this message]
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