linux-kernel - Re: [PATCH net-next v2] net: phy: micrel: Make the GPIO to be non-exclusive

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Message-ID: <YwfYnwzQsDruVi5y@lunn.ch>
Date:   Thu, 25 Aug 2022 22:16:31 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Horatiu Vultur <horatiu.vultur@...rochip.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        hkallweit1@...il.com, linux@...linux.org.uk, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        michael@...le.cc, UNGLinuxDriver@...rochip.com,
        maxime.chevallier@...tlin.com
Subject: Re: [PATCH net-next v2] net: phy: micrel: Make the GPIO to be
 non-exclusive

On Thu, Aug 25, 2022 at 10:14:47PM +0200, Horatiu Vultur wrote:
> The same GPIO line can be shared by multiple phys for the coma mode pin.
> If that is the case then, all the other phys that share the same line
> will failed to be probed because the access to the gpio line is not
> non-exclusive.
> Fix this by making access to the gpio line to be nonexclusive using flag
> GPIOD_FLAGS_BIT_NONEXCLUSIVE. This allows all the other PHYs to be
> probed.
> 
> Fixes: 738871b09250ee ("net: phy: micrel: add coma mode GPIO")
> Signed-off-by: Horatiu Vultur <horatiu.vultur@...rochip.com>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew