Re: mxs-phy on i.MX233 not enumerating

[Fabio Estevam <festevam@xxxxxxxxx>]

Peter,

On 8/13/12, Chen Peter-B29397 <B29397@xxxxxxxxxxxxx> wrote:

> According to IC guys, the logic of handling HOSTDISCONDETECT is the same
> between i.mx28 and i.mx23.

As pointed out by Sean, on mx23 reference manual we have the following
text describing HOSTDISCONDETECT:

"Due to a on chip issue (Errata #2791), software must
pay attention to when to assert the HOSTDISCONDETECT bit description
has the following:

ENHOSTDISCONDETECT bit in HW_USBPHY_CTRL register:
1. Only set HW_USBPHY_CTRL.ENHOSTDISCONDETECT
during high speed host mode.
2. Do not set HW_USBPHY_CTRL.ENHOSTDISCONDETECT
during the reset and speed negotiation period.
3. Do not set HW_USBPHY_CTRL.ENHOSTDISCONDETECT
during host suspend/resume sequence."

and the same is not present on mx28 reference manual.

How can we make sure we are not violating the point 2 above?

Thanks,

Fabio Estevam
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