[PATCH 5/6] ata: sata_mv: issue hard-reset on probe

[Steffen Trumtrar]

When strobing the EATARST signal, the core will generate a hard-reset
instead of a soft-reset. Use this to have the core and ATA drive in a
better defined state.

Signed-off-by: Steffen Trumtrar <s.trumtrar at pengutronix.de>
---
 drivers/ata/sata_mv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index dd326428f4..49205d24d8 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -136,6 +136,8 @@ static int mv_sata_probe(struct device_d *dev)
 
 	mv_soc_65n_phy_errata(base);
 
+	/* strobe for hard-reset */
+	writel(REG_EDMA_COMMAND__EATARST, base + REG_EDMA_COMMAND(0));
 	writel(REG_EDMA_COMMAND__EATARST, base + REG_EDMA_COMMAND(0));
 	udelay(25);
 	writel(0x0, base + REG_EDMA_COMMAND(0));
-- 
2.30.2