[PATCH 04/11] ARM: OMAP2+: usb_host_fs: add custom reset for usb_host_fs (fsusb)

Paul Walmsley paul at pwsan.com
Mon Jun 11 12:20:02 EDT 2012

On Mon, 11 Jun 2012, Cousson, Benoit wrote:

> On 6/11/2012 10:04 AM, Paul Walmsley wrote:
> > But if the IP blocks are reset later, and the bootloader or previous OS
> > gets some register settings wrong, there's a greater risk of system
> > instability or unpredictable behavior during the boot process.
> Mmm, I'm not convince by that. If we delay the PM init at the very last 
> time, at least after the modules are properly reset and init, I do not 
> think we will have more issues than today.

My intent was not to convince, but to explain.

Certainly back in the OMAP3 days there were bootloaders that got SDRAM and 
GPMC timings wrong.  No way did I want to be chasing down kernel "bugs" 
based on those.

Anyway, once people finish fixing the drivers, then we should be able to 
switch to late hwmod reset.

- Paul

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