On Tue, Mar 23, 2021 at 03:00:21PM +0100, Heiko Thiery wrote:
> The TI DP83867 PHY datasheet says:
> T1: Post RESET stabilization time == 195us
> T3: Hardware configuration pins transition to output drivers == 64us
> T4: RESET pulse width == 1us
>
> So with a little overhead set 'reset-assert-us' to 10us (T4) and
> 'reset-deassert-us' to 280us (T1+T3).
>
> Without these reset delays the board will hang during startup when
> bootargs has ip=dhcp set.
>
> Fixes: 1dc7f3d79a1a ("arm64: dts: fsl: add support for Kontron pitx-imx8m board")
> Signed-off-by: Heiko Thiery <heiko.thiery@xxxxxxxxx>
> ---
> v2:
> - add desciption what issue will be fixed
> - add Fixes tag
My branch is not a stable one, so I just squashed it into the original
commit.
Shawn
