linux-kernel - RE: [PATCH 2/4] ARM: EXYNOS: PL330 MDMA1 fix for revision 0 of Exynos4210 SOC

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Date:	Thu, 08 Nov 2012 13:49:47 +0900
From:	Kukjin Kim <kgene.kim@...sung.com>
To:	'Bartlomiej Zolnierkiewicz' <b.zolnierkie@...sung.com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, jassisinghbrar@...il.com,
	vinod.koul@...el.com, rob.herring@...xeda.com, dinguyen@...era.com,
	pawel.moll@....com, t.figa@...sung.com, kyungmin.park@...sung.com
Subject: RE: [PATCH 2/4] ARM: EXYNOS: PL330 MDMA1 fix for revision 0 of
 Exynos4210 SOC

Bartlomiej Zolnierkiewicz wrote:
> 
> > 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?
> 
Yeah, I know. I mean just adding secure mdma1 address is enough for
exynos4210 rev0.

8<-----
@@ -275,6 +275,9 @@ static int __init exynos_dma_init(void)
 		exynos_pdma1_pdata.nr_valid_peri =
 			ARRAY_SIZE(exynos4210_pdma1_peri);
 		exynos_pdma1_pdata.peri_id = exynos4210_pdma1_peri;
+
+		if (samsung_rev() == EXYNOS4210_REV_0)
+			exynos_mdma1_device.res.start = EXYNOS4_PA_S_MDMA1;
 	} else if (soc_is_exynos4212() || soc_is_exynos4412()) {
 		exynos_pdma0_pdata.nr_valid_peri =
 			ARRAY_SIZE(exynos4212_pdma0_peri);
diff --git a/arch/arm/mach-exynos/include/mach/map.h
b/arch/arm/mach-exynos/include/mach/map.h
index 8480849..0abfe78 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -90,6 +90,7 @@
 
 #define EXYNOS4_PA_MDMA0		0x10810000
 #define EXYNOS4_PA_MDMA1		0x12850000
+#define EXYNOS4_PA_S_MDMA1		0x12840000
 #define EXYNOS4_PA_PDMA0		0x12680000
 #define EXYNOS4_PA_PDMA1		0x12690000
 #define EXYNOS5_PA_MDMA0		0x10800000
8<----

Thanks.

Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@...sung.com>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.

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