Hi,
On Monday 29 October 2012 18:24:06 Kukjin Kim wrote:
> On 10/29/12 10:59, Bartlomiej Zolnierkiewicz wrote:
> > Commit 8214513 ("ARM: EXYNOS: fix address for EXYNOS4 MDMA1")
> > changed EXYNOS specific setup of PL330 DMA engine to use 'non-secure'
> > mdma1 address instead of 'secure' one (from 0x12840000 to 0x12850000)
> > to fix issue with some Exynos4212 SOCs. Unfortunately it brakes
> > PL330 setup for revision 0 of Exynos4210 SOC (mdma1 device cannot
> > be found at 'non-secure' address):
> >
> > [ 0.566245] dma-pl330 dma-pl330.2: PERIPH_ID 0x0, PCELL_ID 0x0 !
> > [ 0.566278] dma-pl330: probe of dma-pl330.2 failed with error -22
> >
> > Fix it by using 'secure' mdma1 address on Exynos4210 revision 0 SOC.
> >
> > Cc: Tomasz Figa<[email protected]>
> > Cc: Kukjin Kim<[email protected]>
> > Signed-off-by: Bartlomiej Zolnierkiewicz<[email protected]>
> > Signed-off-by: Kyungmin Park<[email protected]>
> > ---
> > arch/arm/mach-exynos/dma.c | 5 ++++-
> > arch/arm/mach-exynos/include/mach/map.h | 3 ++-
> > 2 files changed, 6 insertions(+), 2 deletions(-)
>
> [...]
>
> > + if (samsung_rev() == EXYNOS4210_REV_0)
> > + exynos_mdma1_device.res.start = EXYNOS4_PA_S_MDMA1;
>
> Hi Bart,
>
> Hmm...above change and adding definition of EXYNOS_PA_S_MDMA1 address
> can fix the problem you commented on EXYNOS4210 Rev0 without others?...
The problem is affecting only EXYNOS4210 Rev0 and the fix is applied only
for case when soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0,
or did you mean something else?
Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung Poland R&D Center
> Thanks.
>
> Best regards,
> Kgene.
> --
> Kukjin Kim <[email protected]>, Senior Engineer,
> SW Solution Development Team, Samsung Electronics Co., Ltd.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
