ARM: dts: turris-omnia: configure LED[2]/INTn pin as interrupt pin
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@kernel.org> Reported-by: Rui Salvaterra <rsalvaterra@gmail.com> Fixes: 26ca8b52 ("ARM: dts: add support for Turris Omnia") Cc: Uwe Kleine-König <uwe@kleine-koenig.org> Cc: linux-arm-kernel@lists.infradead.org Cc: Andrew Lunn <andrew@lunn.ch> Cc: Gregory CLEMENT <gregory.clement@bootlin.com> Cc: <stable@vger.kernel.org> Tested-by: Rui Salvaterra <rsalvaterra@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
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