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arm: omap: reset sata on boot

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On OMAP platforms (like OMAP5) Linux kernel fails to detect a SATA
device if it is used by U-Boot.

It happens because U-Boot does not reset SATA controller before boot.

Reset the controller on OS boot so that Linux will have a clean state
to work with.

Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il>
Reviewed-by: Tom Rini <trini@ti.com>
This commit is contained in:
Dmitry Lifshitz 2014-12-15 16:02:58 +02:00 • committed by Tom Rini
parent 8decf5d4a5
commit 87791adc22
1 changed files with 9 additions and 0 deletions
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9
arch/arm/cpu/armv7/omap-common/boot-common.c
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@ -9,12 +9,14 @@
*/
#include <common.h>
#include <ahci.h>
#include <spl.h>
#include <asm/omap_common.h>
#include <asm/arch/omap.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/sys_proto.h>
#include <watchdog.h>
#include <scsi.h>
DECLARE_GLOBAL_DATA_PTR;
@ -143,3 +145,10 @@ void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
image_entry((u32 *)&gd->arch.omap_boot_params);
}
#endif
#ifdef CONFIG_SCSI_AHCI_PLAT
void arch_preboot_os(void)
{
ahci_reset(DWC_AHSATA_BASE);
}
#endif