Ideally, the Linux kernel should get the hardware in its most untouched state. For the most part, U-Boot does not reset the various subsystems it touches before boot, and usually Linux deals with it, but on some boards (cm_fx6) the Linux kernel fails to detect the ssd correctly if sata is used by U-Boot.
Power off sata on OS boot so that Linux will have a clean state to work with.
Signed-off-by: Nikita Kiryanov nikita@compulab.co.il Cc: Stefano Babic sbabic@denx.de --- arch/arm/imx-common/cpu.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c index 09fc227..794c307 100644 --- a/arch/arm/imx-common/cpu.c +++ b/arch/arm/imx-common/cpu.c @@ -17,6 +17,7 @@ #include <asm/arch/sys_proto.h> #include <asm/arch/crm_regs.h> #include <ipu_pixfmt.h> +#include <sata.h>
#ifdef CONFIG_FSL_ESDHC #include <fsl_esdhc.h> @@ -180,10 +181,13 @@ u32 get_ahb_clk(void) return get_periph_clk() / (ahb_podf + 1); }
-#if defined(CONFIG_VIDEO_IPUV3) void arch_preboot_os(void) { +#if defined(CONFIG_CMD_SATA) + sata_stop(); +#endif +#if defined(CONFIG_VIDEO_IPUV3) /* disable video before launching O/S */ ipuv3_fb_shutdown(); -} #endif +}