[U-Boot] [PATCH 1/3] arm: mvebu: AXP: Add possiblity to configure PEX detection pulse width

[Stefan Roese]

On 10.03.2017 15:40, Stefan Roese wrote:
> Tests have shown that on some boards the default width of the
> configuration pulse for the PEX link detection might lead to
> non-established PCIe links (link down). Especially under certain
> conditions (higher temperature) and with specific PCIe devices
> (in the case on the theadorable board its a Atheros PCIe WLAN
> device). To enable a board-specific detection pulse width this weak
> array "serdes_pex_pulse_width[4]" is introduced which can be
> overwritten if needed by a board-specific version. If the board
> code does not provide a non-weak version of this variable, the
> default value will be used. So nothing is changed from the
> current setup on the supported board.
>
> Many thanks to Adam from Marvell for all his insights here and
> his suggestion about testing with a changed detection pulse width.
>
> Signed-off-by: Stefan Roese <sr at denx.de>
> Suggested-by: Adam Shobash <adams at marvell.com>
> Cc: Adam Shobash <adams at marvell.com>
> Cc: Nadav Haklai <nadavh at marvell.com>
> Cc: Konstantin Porotchkin <kostap at marvell.com>

Applied to u-boot-marvell/master.

Thanks,
Stefan