From: "Rob Herring (Arm)" <robh@kernel.org>
To: "Bastien Curutchet (Schneider Electric)" <bastien.curutchet@bootlin.com>
Cc: "Paolo Abeni" <pabeni@redhat.com>,
"Woojung Huh" <Woojung.Huh@microchip.com>,
netdev@vger.kernel.org, "Conor Dooley" <conor+dt@kernel.org>,
devicetree@vger.kernel.org,
"David S. Miller" <davem@davemloft.net>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Marek Vasut" <marex@denx.de>,
"Vladimir Oltean" <olteanv@gmail.com>,
UNGLinuxDriver@microchip.com,
"Woojung Huh" <woojung.huh@microchip.com>,
"Eric Dumazet" <edumazet@google.com>,
"Andrew Lunn" <andrew@lunn.ch>,
"Miquèl Raynal" <miquel.raynal@bootlin.com>,
"Pascal Eberhard" <pascal.eberhard@se.com>,
linux-kernel@vger.kernel.org,
"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
"Jakub Kicinski" <kuba@kernel.org>
Subject: Re: [PATCH net-next v3 2/3] dt-bindings: net: dsa: microchip: Add strap description to set SPI mode
Date: Mon, 22 Sep 2025 12:22:22 -0500 [thread overview]
Message-ID: <175856174145.496533.6230819934968287513.robh@kernel.org> (raw)
In-Reply-To: <20250918-ksz-strap-pins-v3-2-16662e881728@bootlin.com>
On Thu, 18 Sep 2025 10:33:51 +0200, Bastien Curutchet (Schneider Electric) wrote:
> At reset, KSZ8463 uses a strap-based configuration to set SPI as
> interface bus. If the required pull-ups/pull-downs are missing (by
> mistake or by design to save power) the pins may float and the
> configuration can go wrong preventing any communication with the switch.
>
> Add a 'reset' pinmux state
> Add a KSZ8463 specific strap description that can be used by the driver
> to drive the strap pins during reset. Two GPIOs are used. Users must
> describe either both of them or none of them.
>
> Signed-off-by: Bastien Curutchet (Schneider Electric) <bastien.curutchet@bootlin.com>
> ---
> .../devicetree/bindings/net/dsa/microchip,ksz.yaml | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
next prev parent reply other threads:[~2025-09-22 17:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-18 8:33 [PATCH net-next v3 0/3] net: dsa: microchip: Add strap description to set SPI as interface bus Bastien Curutchet (Schneider Electric)
2025-09-18 8:33 ` [PATCH net-next v3 1/3] dt-bindings: net: dsa: microchip: Group if clause under allOf tag Bastien Curutchet (Schneider Electric)
2025-09-18 8:33 ` [PATCH net-next v3 2/3] dt-bindings: net: dsa: microchip: Add strap description to set SPI mode Bastien Curutchet (Schneider Electric)
2025-09-22 17:22 ` Rob Herring (Arm) [this message]
2025-09-18 8:33 ` [PATCH net-next v3 3/3] net: dsa: microchip: Set SPI as bus interface during reset for KSZ8463 Bastien Curutchet
2025-09-22 23:40 ` [PATCH net-next v3 0/3] net: dsa: microchip: Add strap description to set SPI as interface bus patchwork-bot+netdevbpf
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