lkml.org 
[lkml]   [2015]   [Sep]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH] ARM: pxa: fix DFI bus lockups on startup
Date
Robert Jarzmik <robert.jarzmik@free.fr> writes:

> After the conversion of pxa architecture to common clock framework, the
> NAND clock can be disabled on startup if no nand driver claims it.
>
> In this case, it happens that if the bootloader used the NAND and set
> the DFI arbitration bit, the next access to a static memory controller
> area, such as an ethernet card, the system bus will stall, and the core
> will be stalled forever.
>
> Fix this by clearing the DFI arbritration bit in pxa3xx startup. The bit
> will be enabled the pxa3xx-nand driver on need anyway. The only left
> requirement is that upon pxa3xx-nand removal, the bit should be cleared
> before the clock is disabled.
>
> Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Queued to pxa/fixes.

--
Robert


\
 
 \ /
  Last update: 2015-09-12 15:41    [W:0.048 / U:1.544 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site