Subject: [PATCH 2/4] ARM: EXYNOS: PL330 MDMA1 fix for revision 0 of Exynos4210 SOC

From: [email-masked] (Kukjin Kim)
Date: Mon, 29 Oct 2012 18:24:06 +0100

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-masked]>
> Cc: Kukjin Kim<[email-masked]>
> Signed-off-by: Bartlomiej Zolnierkiewicz<[email-masked]>
> Signed-off-by: Kyungmin Park<[email-masked]>
> ---
>   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?...

Thanks.

Best regards,
Kgene.
--
Kukjin Kim <[email-masked]>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.