From a26c56ae67fa9fbb45a8a232dcd7ebaa7af16086 Mon Sep 17 00:00:00 2001 From: Marek Behún 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 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 Reported-by: Rui Salvaterra Fixes: 26ca8b52d6e1 ("ARM: dts: add support for Turris Omnia") Cc: Uwe Kleine-König Cc: linux-arm-kernel@lists.infradead.org Cc: Andrew Lunn Cc: Gregory CLEMENT Cc: Tested-by: Rui Salvaterra Reviewed-by: Andrew Lunn Signed-off-by: Gregory CLEMENT --- arch/arm/boot/dts/armada-385-turris-omnia.dts | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm/boot/dts/armada-385-turris-omnia.dts') diff --git a/arch/arm/boot/dts/armada-385-turris-omnia.dts b/arch/arm/boot/dts/armada-385-turris-omnia.dts index dc80a909ea88..5bd6a66d2c2b 100644 --- a/arch/arm/boot/dts/armada-385-turris-omnia.dts +++ b/arch/arm/boot/dts/armada-385-turris-omnia.dts @@ -390,6 +390,7 @@ phy1: ethernet-phy@1 { compatible = "ethernet-phy-ieee802.3-c22"; reg = <1>; + marvell,reg-init = <3 18 0 0x4985>; /* irq is connected to &pcawan pin 7 */ }; -- cgit