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arm: imx: stop sata on boot

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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>
This commit is contained in:
Nikita Kiryanov 2014-11-21 12:47:26 +02:00 • committed by Stefano Babic
parent 9cad354425
commit 44b9841d78
1 changed files with 6 additions and 2 deletions
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8
arch/arm/imx-common/cpu.c
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@ -18,6 +18,7 @@
#include <asm/arch/crm_regs.h>
#include <ipu_pixfmt.h>
#include <thermal.h>
#include <sata.h>
#ifdef CONFIG_FSL_ESDHC
#include <fsl_esdhc.h>
@ -201,13 +202,16 @@ 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
}
void set_chipselect_size(int const cs_size)
{