From: Andrew Lunn <andrew@lunn.ch>
To: Horatiu Vultur <horatiu.vultur@microchip.com>
Cc: nicolas.ferre@microchip.com, alexandre.belloni@bootlin.com,
claudiu.beznea@tuxon.dev, robh@kernel.org, krzk+dt@kernel.org,
conor+dt@kernel.org, linux-arm-kernel@lists.infradead.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ARM: dts: lan966x: Fix the access to the PHYs for pcb8290
Date: Wed, 19 Nov 2025 20:38:26 +0100 [thread overview]
Message-ID: <5ca786cf-e919-4e7c-9134-23083cc93da5@lunn.ch> (raw)
In-Reply-To: <20251119134750.394655-1-horatiu.vultur@microchip.com>
On Wed, Nov 19, 2025 at 02:47:50PM +0100, Horatiu Vultur wrote:
> The problem is that the MDIO controller can't detect any of the PHYs.
> The reason is that the lan966x is not pulling high the GPIO 53 that is
> connected to the PHYs reset GPIO. Without doing this the PHYs are kept
> in reset. The mdio controller framework has the possiblity to control a
> GPIO to release the reset of the PHYs. So take advantage of this and set
> line to be high before accessing the PHYs.
>
> Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Andrew
next prev parent reply other threads:[~2025-11-19 19:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-19 13:47 Horatiu Vultur
2025-11-19 19:38 ` Andrew Lunn [this message]
2025-12-06 11:03 ` Claudiu Beznea
2026-01-08 7:15 ` claudiu beznea
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