Re: [PATCH 0/4] OMAP2+: Fix boot hang with earlycon enabled

[Mark Jackson <mpfj-list@newflow.co.uk>]

On 22/07/13 11:01, Rajendra Nayak wrote:
> Boot on all OMAP2+ devices is broken with earlycon enabled
> as discussed here [1]
> 
> There were 2 issues which were rootcaused
> 1. Issue caused due to hwmod doing a reset of console uart while
> earlycon was using it (seen only on am335x devices)
> 
> 2. omap serial causing a NULL context restore with context loss
> count missing.
> 
> This patch set attempts to fix both the issues and is one of the
> different approaches discussed [1] on how to fix these issues.
> 
> Boot tested on omap4 panda es with and without earlycon (DT boot)
> Boot tested on am335x bone black with and without earlycon (DT boot)
> Boot tested on OMAP3 beagle XM with and without earlycon (non-DT boot)
> 
> [1] http://www.mail-archive.com/linux-omap@vger.kernel.org/msg91662.html
> 
> Grygorii Strashko (1):
>   serial: omap: enable PM runtime only when its fully configured
> 
> Rajendra Nayak (3):
>   ARM: OMAP2+: hwmod: Fix a crash in _setup_reset() with DEBUG_LL
>   ARM: OMAP2+: Avoid idling memory controllers with no drivers
>   ARM: OMAP2+: Sync hwmod state with the pm_runtime and omap_device
>     state
> 
>  arch/arm/mach-omap2/omap_device.c                  |   18 ++++++++
>  arch/arm/mach-omap2/omap_hwmod.h                   |   48 ++++++++++++++++++++
>  arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c |    6 +--
>  arch/arm/mach-omap2/omap_hwmod_33xx_data.c         |    2 +-
>  arch/arm/mach-omap2/omap_hwmod_3xxx_data.c         |    9 ++--
>  arch/arm/mach-omap2/omap_hwmod_44xx_data.c         |    5 +-
>  arch/arm/mach-omap2/omap_hwmod_54xx_data.c         |    3 +-
>  arch/arm/mach-omap2/serial.c                       |   11 -----
>  drivers/tty/serial/omap-serial.c                   |    3 +-
>  9 files changed, 81 insertions(+), 24 deletions(-)
 
This now fixes the boot hang for me so ...

Tested-by: Mark Jackson <mpfj-list@newflow.co.uk>