From: Steffen Trumtrar <s.trumtrar@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Subject: [PATCH 5/6] ata: sata_mv: issue hard-reset on probe
Date: Tue, 18 Jan 2022 15:04:52 +0100 [thread overview]
Message-ID: <20220118140453.1860909-6-s.trumtrar@pengutronix.de> (raw)
In-Reply-To: <20220118140453.1860909-1-s.trumtrar@pengutronix.de>
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@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
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next prev parent reply other threads:[~2022-01-18 14:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-18 14:04 [PATCH 0/6] sata_mv: cleanup and error handling Steffen Trumtrar
2022-01-18 14:04 ` [PATCH 1/6] ata: sata_mv: cleanup alignment Steffen Trumtrar
2022-01-18 14:04 ` [PATCH 2/6] ata: sata_mv: clear SERROR and en/disable EDMA Steffen Trumtrar
2022-01-18 14:04 ` [PATCH 3/6] ata: sata_mv: handle the phy errata Steffen Trumtrar
2022-01-18 14:04 ` [PATCH 4/6] ata: sata_mv: enable Generation 2 speed support Steffen Trumtrar
2022-01-18 14:04 ` Steffen Trumtrar [this message]
2022-01-18 14:04 ` [PATCH 6/6] ata: sata_mv: try probing multiple times Steffen Trumtrar
2022-01-20 8:32 ` Sascha Hauer
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