[U-Boot] [PATCH v2] ls102xa: Fix reset hang

[Wolfgang Denk]

Dear Fabio Estevam,

In message <1443799557-26419-2-git-send-email-festevam at gmail.com> you wrote:
> 
> Since commit 623d96e89aca6("imx: wdog: correct wcr register settings")
> issuing a 'reset' command causes the system to hang.
> 
> Unlike i.MX and Vybrid, the watchdog controller on LS102x is big-endian.
> 
> This means that the watchdog on LS1021 has been working by accident as
> it does not use the big-endian accessors in drivers/watchdog/imx_watchdog.c.
> Commit 623d96e89aca6("imx: wdog: correct wcr register settings") only
> revelead the endianness problem on LS102x.
> 
> In order to fix the reset hang, introduce a reset_cpu() implementation that 
> is specific for ls102x, which accesses the watchdog WCR register in big-endian
> format. All that is required to reset LS102x is to clear the SRS bit.
> 
> Reported-by: Sinan Akman <sinan at writeme.com>
> Tested-by: Sinan Akman <sinan at writeme.com>
> Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
> ---
> Changes since v1:
> - Do not add duplicate wdog struct (Wolfgang)

Thanks a lot!

Reviewed-by: Wolfgang Denk <wd at denx.de>

Best regards,

Wolfgang Denk

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