[PATCH] ARM: exynos_defconfig: Enable PL330 DMA

Tushar Behera tushar.b at samsung.com
Wed Jul 30 22:42:39 PDT 2014

We are getting a system hang on Arndale-Octa board if PL330_DMA is not
enabled. The issue is related to [1].

AUDSS block provides the clock for audio DMA controller. Any operation
on this clock requires that the clock to AUDSS block be enabled. In
current configuration, the clock is gated during late boot process when
all unused clocks are disabled.

When PL330_DMA is enabled, the 'apb_pclk' is enabled/disabled during
amba_probe(). Otherwise, this clock is also disabled during late boot.
If the AUDSS block clock is disabled by then, we get a system hang.

[1] https://lkml.org/lkml/2014/6/11/32

Signed-off-by: Tushar Behera <tushar.b at samsung.com>
 arch/arm/configs/exynos_defconfig |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
index e07a227..c5888e8 100644
--- a/arch/arm/configs/exynos_defconfig
+++ b/arch/arm/configs/exynos_defconfig
@@ -109,6 +109,8 @@ CONFIG_MMC_DW_IDMAC=y

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