arm: omap: reset sata on boot
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>
diff --git a/arch/arm/cpu/armv7/omap-common/boot-common.c b/arch/arm/cpu/armv7/omap-common/boot-common.c
index cb18908..00a1082 100644
--- a/arch/arm/cpu/armv7/omap-common/boot-common.c
+++ b/arch/arm/cpu/armv7/omap-common/boot-common.c
@@ -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 @@
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