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[95.249.236.54]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3e1a31c69e4sm16547400f8f.44.2025.09.08.10.48.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Sep 2025 10:48:21 -0700 (PDT) Message-ID: <68bf16e5.df0a0220.2e182c.b822@mx.google.com> X-Google-Original-Message-ID: Date: Mon, 8 Sep 2025 19:48:17 +0200 From: Christian Marangi To: Andrew Lunn Cc: Lorenzo Bianconi , Sean Wang , Linus Walleij , Matthias Brugger , AngeloGioacchino Del Regno , Benjamin Larsson , linux-mediatek@lists.infradead.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, stable@vger.kernel.org Subject: Re: [PATCH] pinctrl: airoha: fix wrong MDIO function bitmaks References: <20250908113723.31559-1-ansuelsmth@gmail.com> <583981f9-b2ed-45fe-a327-4fd8218dc23e@lunn.ch> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <583981f9-b2ed-45fe-a327-4fd8218dc23e@lunn.ch> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250908_104823_515210_0EE5A800 X-CRM114-Status: GOOD ( 15.75 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Mon, Sep 08, 2025 at 06:54:15PM +0200, Andrew Lunn wrote: > On Mon, Sep 08, 2025 at 01:37:19PM +0200, Christian Marangi wrote: > > With further testing with an attached Aeonsemi it was discovered that > > the pinctrl MDIO function applied the wrong bitmask. The error was > > probably caused by the confusing documentation related to these bits. > > > > Inspecting what the bootloader actually configure, the SGMII_MDIO_MODE > > is never actually set but instead it's set force enable to the 2 GPIO > > (gpio 1-2) for MDC and MDIO pin. > > Is the MDIO bus implemented using the GPIO bitbanging driver? > No it does use the MDIO bus integrated in the MT7530 Switch. It's just that the MDIO pin can be muxed as GPIO usage. -- Ansuel