This is a note to let you know that I've just added the patch titled ARM: dts: imx6dl-yapp4: Fix RGMII connection to QCA8334 switch to the 5.12-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm-dts-imx6dl-yapp4-fix-rgmii-connection-to-qca8334-switch.patch and it can be found in the queue-5.12 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 0e4a4a08cd78efcaddbc2e4c5ed86b5a5cb8a15e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michal=20Vok=C3=A1=C4=8D?= <michal.vokac@xxxxxxxxx> Date: Tue, 13 Apr 2021 16:45:57 +0200 Subject: ARM: dts: imx6dl-yapp4: Fix RGMII connection to QCA8334 switch MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Michal Vokáč <michal.vokac@xxxxxxxxx> commit 0e4a4a08cd78efcaddbc2e4c5ed86b5a5cb8a15e upstream. The FEC does not have a PHY so it should not have a phy-handle. It is connected to the switch at RGMII level so we need a fixed-link sub-node on both ends. This was not a problem until the qca8k.c driver was converted to PHYLINK by commit b3591c2a3661 ("net: dsa: qca8k: Switch to PHYLINK instead of PHYLIB"). That commit revealed the FEC configuration was not correct. Fixes: 87489ec3a77f ("ARM: dts: imx: Add Y Soft IOTA Draco, Hydra and Ursa boards") Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Michal Vokáč <michal.vokac@xxxxxxxxx> Reviewed-by: Andrew Lunn <andrew@xxxxxxx> Signed-off-by: Shawn Guo <shawnguo@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm/boot/dts/imx6dl-yapp4-common.dtsi | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi +++ b/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi @@ -105,9 +105,13 @@ phy-reset-gpios = <&gpio1 25 GPIO_ACTIVE_LOW>; phy-reset-duration = <20>; phy-supply = <&sw2_reg>; - phy-handle = <ðphy0>; status = "okay"; + fixed-link { + speed = <1000>; + full-duplex; + }; + mdio { #address-cells = <1>; #size-cells = <0>; Patches currently in stable-queue which might be from michal.vokac@xxxxxxxxx are queue-5.12/arm-dts-imx6dl-yapp4-fix-rgmii-connection-to-qca8334-switch.patch