[PATCH 2/4] ARM: EXYNOS: PL330 MDMA1 fix for revision 0 of Exynos4210 SOC
From: Bartlomiej Zolnierkiewicz <hidden>
Date: 2012-10-29 10:01:22
Also in:
linux-samsung-soc, lkml
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
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 <redacted>
Cc: Kukjin Kim <redacted>
Signed-off-by: Bartlomiej Zolnierkiewicz <redacted>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
---
arch/arm/mach-exynos/dma.c | 5 ++++-
arch/arm/mach-exynos/include/mach/map.h | 3 ++-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-exynos/dma.c b/arch/arm/mach-exynos/dma.c
index 21d568b..dcc9f74 100644
--- a/arch/arm/mach-exynos/dma.c
+++ b/arch/arm/mach-exynos/dma.c@@ -261,7 +261,7 @@ static struct dma_pl330_platdata exynos_mdma1_pdata = { }; static AMBA_AHB_DEVICE(exynos_mdma1, "dma-pl330.2", 0x00041330, - EXYNOS4_PA_MDMA1, {EXYNOS4_IRQ_MDMA1}, &exynos_mdma1_pdata); + EXYNOS4_PA_NS_MDMA1, {EXYNOS4_IRQ_MDMA1}, &exynos_mdma1_pdata); static int __init exynos_dma_init(void) {
@@ -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@@ -89,7 +89,8 @@ #define EXYNOS4_PA_L2CC 0x10502000 #define EXYNOS4_PA_MDMA0 0x10810000 -#define EXYNOS4_PA_MDMA1 0x12850000 +#define EXYNOS4_PA_NS_MDMA1 0x12850000 +#define EXYNOS4_PA_S_MDMA1 0x12840000 #define EXYNOS4_PA_PDMA0 0x12680000 #define EXYNOS4_PA_PDMA1 0x12690000 #define EXYNOS5_PA_MDMA0 0x10800000
--
1.8.0