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 <nik...@compulab.co.il>
Cc: Stefano Babic <sba...@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
+}
--
1.9.1
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