[PATCH v1] ARM: protonic: vicut1: disable on-die termination to fix PHY bootstrapping
sha at pengutronix.de
Mon May 24 21:58:01 PDT 2021
On Tue, May 18, 2021 at 10:37:07AM +0200, Oleksij Rempel wrote:
> If on-die termination is enabled, the RXC pin of iMX6 will be pulled
> high. Since we already have an 10K pull-down on board, the RXC level on
> PHY reset will be ~800mV, which is mostly interpreted as 1. On some
> reboots we get 0 instead and kernel can't detect the PHY properly.
> Since the default 0x020e07ac value is 0, it is sufficient to remove this
> entry from the affected imxcfg files.
> Since we get stable 0 on pin PHYADDR, the PHY address is changed from
> 4 to 0.
> Reported-by: Robin van der Gracht <robin at protonic.nl>
> Fixes: 00adc1e33ef8 ("ARM: add imx6 based Protonic boads")
> Signed-off-by: Oleksij Rempel <o.rempel at pengutronix.de>
> arch/arm/boards/protonic-imx6/flash-header-vicut1.imxcfg | 1 -
> 1 file changed, 1 deletion(-)
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