Re: [PATCH] arm64: dts: imx8mm-verdin: Do not power down eth-phy

From: Shawn Guo
Date: Thu Jan 26 2023 - 02:32:50 EST


On Mon, Jan 16, 2023 at 03:01:52PM +0100, Philippe Schenker wrote:
> From: Philippe Schenker <philippe.schenker@xxxxxxxxxxx>
>
> 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@xxxxxxxxxxx>

Applied, thanks!