From: Philippe Schenker philippe.schenker@toradex.com
[ Upstream commit 39c95d0c357d7ef76aea958c1bece6b24f9b2e7e ]
Currently if suspending using either freeze or memory state, the fec driver tries to power down the phy which leads to crash of the kernel and non-responsible kernel with the following call trace:
[ 24.839889 ] Call trace: [ 24.839892 ] phy_error+0x18/0x60 [ 24.839898 ] kszphy_handle_interrupt+0x6c/0x80 [ 24.839903 ] phy_interrupt+0x20/0x2c [ 24.839909 ] irq_thread_fn+0x30/0xa0 [ 24.839919 ] irq_thread+0x178/0x2c0 [ 24.839925 ] kthread+0x154/0x160 [ 24.839932 ] ret_from_fork+0x10/0x20
Since there is currently no functionality in the phy subsystem to power down phys let's just disable the feature of powering-down the ethernet phy.
Fixes: 6a57f224f734 ("arm64: dts: freescale: add initial support for verdin imx8m mini") Signed-off-by: Philippe Schenker philippe.schenker@toradex.com Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi index bcab830c6e95..59445f916d7f 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi @@ -98,6 +98,7 @@ off-on-delay = <500000>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_reg_eth>; + regulator-always-on; regulator-boot-on; regulator-max-microvolt = <3300000>; regulator-min-microvolt = <3300000>;