[U-Boot] [PATCH 5/5] arm: imx: stop sata on boot

[Nikita Kiryanov]

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 at compulab.co.il>
Cc: Stefano Babic <sbabic at 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