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@xxxxxxxxxxx> --- 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 CONFIG_MMC_DW_EXYNOS=y CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_S3C=y +CONFIG_DMADEVICES=y +CONFIG_PL330_DMA=y CONFIG_COMMON_CLK_MAX77686=y CONFIG_EXT2_FS=y CONFIG_EXT3_FS=y -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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