This is a note to let you know that I've just added the patch titled ARM: dts: turris-omnia: configure LED[2]/INTn pin as interrupt pin to the 4.19-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-turris-omnia-configure-led-intn-pin-as-interrupt-pin.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From a26c56ae67fa9fbb45a8a232dcd7ebaa7af16086 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marek=20Beh=C3=BAn?= <kabel@xxxxxxxxxx> Date: Sun, 21 Feb 2021 00:11:44 +0100 Subject: ARM: dts: turris-omnia: configure LED[2]/INTn pin as interrupt pin MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Marek Behún <kabel@xxxxxxxxxx> commit a26c56ae67fa9fbb45a8a232dcd7ebaa7af16086 upstream. Use the `marvell,reg-init` DT property to configure the LED[2]/INTn pin of the Marvell 88E1514 ethernet PHY on Turris Omnia into interrupt mode. Without this the pin is by default in LED[2] mode, and the Marvell PHY driver configures LED[2] into "On - Link, Blink - Activity" mode. This fixes the issue where the pca9538 GPIO/interrupt controller (which can't mask interrupts in HW) received too many interrupts and after a time started ignoring the interrupt with error message: IRQ 71: nobody cared There is a work in progress to have the Marvell PHY driver support parsing PHY LED nodes from OF and registering the LEDs as Linux LED class devices. Once this is done the PHY driver can also automatically set the pin into INTn mode if it does not find LED[2] in OF. Until then, though, we fix this via `marvell,reg-init` DT property. Signed-off-by: Marek Behún <kabel@xxxxxxxxxx> Reported-by: Rui Salvaterra <rsalvaterra@xxxxxxxxx> Fixes: 26ca8b52d6e1 ("ARM: dts: add support for Turris Omnia") Cc: Uwe Kleine-König <uwe@xxxxxxxxxxxxxxxxx> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx Cc: Andrew Lunn <andrew@xxxxxxx> Cc: Gregory CLEMENT <gregory.clement@xxxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> Tested-by: Rui Salvaterra <rsalvaterra@xxxxxxxxx> Reviewed-by: Andrew Lunn <andrew@xxxxxxx> Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm/boot/dts/armada-385-turris-omnia.dts | 1 + 1 file changed, 1 insertion(+) --- a/arch/arm/boot/dts/armada-385-turris-omnia.dts +++ b/arch/arm/boot/dts/armada-385-turris-omnia.dts @@ -236,6 +236,7 @@ status = "okay"; compatible = "ethernet-phy-id0141.0DD1", "ethernet-phy-ieee802.3-c22"; reg = <1>; + marvell,reg-init = <3 18 0 0x4985>; /* irq is connected to &pcawan pin 7 */ }; Patches currently in stable-queue which might be from kabel@xxxxxxxxxx are queue-4.19/arm-dts-turris-omnia-configure-led-intn-pin-as-interrupt-pin.patch