[PATCH] ARM: exynos_defconfig: Enable PL330 DMA
From: afaerber@suse.de (Andreas Färber)
Date: 2014-07-31 06:09:49
Also in:
linux-samsung-soc
Hi Tushar, Am 31.07.2014 07:42, schrieb Tushar Behera:
quoted hunk ↗ jump to hunk
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 <redacted> --- 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
Reviewed-by: Andreas F?rber <afaerber@suse.de> Turns out I had those enabled in my local config when testing the memory patches on Arndale Octa. multi_v7_defconfig has them already. However, shouldn't Kconfig grow a dependency to enable those options automatically for whatever driver or SoC needs them? Cheers, Andreas -- SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 N?rnberg, Germany GF: Jeff Hawn, Jennifer Guild, Felix Imend?rffer; HRB 16746 AG N?rnberg