linux-kernel - Re: [PATCH v2 1/2] net: dsa: LAN9303: Add early read to sync

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Message-Id: <166254961491.1463.4925500577031178152.git-patchwork-notify@kernel.org>
Date:   Wed, 07 Sep 2022 11:20:14 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Jerry Ray <jerry.ray@...rochip.com>
Cc:     andrew@...n.ch, vivien.didelot@...il.com, f.fainelli@...il.com,
        olteanv@...il.com, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] net: dsa: LAN9303: Add early read to sync

Hello:

This series was applied to netdev/net-next.git (master)
by David S. Miller <davem@...emloft.net>:

On Fri, 2 Sep 2022 16:30:20 -0500 you wrote:
> Add initial BYTE_ORDER read to sync the 32-bit accesses over the 16-bit
> mdio bus to improve driver robustness.
> 
> The lan9303 expects two mdio read transactions back-to-back to read a
> 32-bit register. The first read transaction causes the other half of the
> 32-bit register to get latched.  The subsequent read returns the latched
> second half of the 32-bit read. The BYTE_ORDER register is an exception to
> this rule. As it is a constant value, there is no need to latch the second
> half. We read this register first in case there were reads during the boot
> loader process that might have occurred prior to this driver taking over
> ownership of accessing this device.
> 
> [...]

Here is the summary with links:
  - [v2,1/2] net: dsa: LAN9303: Add early read to sync
    https://git.kernel.org/netdev/net-next/c/732f374e23a9
  - [v2,2/2] net: dsa: LAN9303: Add basic support for LAN9354
    https://git.kernel.org/netdev/net-next/c/13248b975038

You are awesome, thank you!
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