From: Rob Herring <robh@kernel.org>
To: Russell King <rmk+kernel@armlinux.org.uk>
Cc: devicetree@vger.kernel.org, Jason Cooper <jason@lakedaemon.net>,
Andrew Lunn <andrew@lunn.ch>,
Gregory Clement <gregory.clement@bootlin.com>,
Kishon Vijay Abraham I <kishon@ti.com>,
Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>,
linux-arm-kernel@lists.infradead.org,
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Subject: Re: [PATCH 1/2] dt: update Marvell Armada 38x COMPHY binding
Date: Wed, 15 Jul 2020 14:33:17 -0600 [thread overview]
Message-ID: <20200715203317.GA771166@bogus> (raw)
In-Reply-To: <E1jqIlJ-0007rM-Oe@rmk-PC.armlinux.org.uk>
On Tue, 30 Jun 2020 17:05:33 +0100, Russell King wrote:
> Update the Marvell Armada 38x COMPHY binding with an additional
> optional register pair describing the location of an undocumented
> system register controlling something to do with the Gigabit Ethernet
> and COMPHY. There is one bit for each COMPHY lane that may be using
> the serdes, but exactly what this register does is completely unknown.
>
> This register only appears to exist on Armada 38x devices, and not
> other SoCs using the NETA ethernet block, so it seems logical that it
> should be part of the COMPHY.
>
> This is also how u-boot groups this register; it is dealt with as part
> of the COMPHY initialisation there.
>
> However, at the end of the day, due to the undocumented nature of this
> register, we can only guess.
>
> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
> ---
> .../devicetree/bindings/phy/phy-armada38x-comphy.txt | 10 +++++++++-
> 1 file changed, 9 insertions(+), 1 deletion(-)
>
Acked-by: Rob Herring <robh@kernel.org>
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next prev parent reply other threads:[~2020-07-15 20:34 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-30 16:04 [PATCH 0/2] Fix Armada 38x mvneta lockups when switching speeds Russell King - ARM Linux admin
2020-06-30 16:05 ` [PATCH 1/2] dt: update Marvell Armada 38x COMPHY binding Russell King
2020-07-09 10:28 ` Russell King - ARM Linux admin
2020-07-15 20:33 ` Rob Herring [this message]
2020-06-30 16:05 ` [PATCH 2/2] phy: armada-38x: fix NETA lockup when repeatedly switching speeds Russell King
2020-06-30 16:06 ` Russell King - ARM Linux admin
2020-07-01 6:57 ` Vinod Koul
2020-07-10 15:19 ` Russell King - ARM Linux admin
2020-07-13 6:18 ` Vinod Koul
2020-07-13 15:36 ` Gregory CLEMENT
2020-07-13 17:21 ` Russell King - ARM Linux admin
2020-07-13 18:07 ` Russell King - ARM Linux admin
2020-07-16 5:46 ` Vinod Koul
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