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From d587c866f34aa8e59ddc3628969113e725e36eab Mon Sep 17 00:00:00 2001
From: Lior Amsalem <alior@marvell.com>
Date: Mon, 23 Dec 2013 13:07:35 +0100
Subject: [PATCH 196/203] ata: sata_mv: setting PHY speed according to SControl
speed
This patch fixes a SATA hotplug issue on the Armada 370 and Armada XP
SoCs. Without it, if a disk is unplugged from a SATA port, then further
hotplug notification are now longer received on this port.
This should be applied to every -stable kernel supporting Armada SoCs.
Signed-off-by: Lior Amsalem <alior@marvell.com>
Signed-off-by: Nadav Haklai <nadavh@marvell.com>
Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Gregory Clement <gregory.clement@free-electrons.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: stable@vger.kernel.org
---
drivers/ata/sata_mv.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -304,6 +304,7 @@ enum {
MV5_LTMODE = 0x30,
MV5_PHY_CTL = 0x0C,
SATA_IFCFG = 0x050,
+ LP_PHY_CTL = 0x058,
MV_M2_PREAMP_MASK = 0x7e0,
@@ -1353,6 +1354,7 @@ static int mv_scr_write(struct ata_link
if (ofs != 0xffffffffU) {
void __iomem *addr = mv_ap_base(link->ap) + ofs;
+ void __iomem *lp_phy_addr = mv_ap_base(link->ap) + LP_PHY_CTL;
if (sc_reg_in == SCR_CONTROL) {
/*
* Workaround for 88SX60x1 FEr SATA#26:
@@ -1369,6 +1371,14 @@ static int mv_scr_write(struct ata_link
*/
if ((val & 0xf) == 1 || (readl(addr) & 0xf) == 1)
val |= 0xf000;
+
+ /*
+ * Setting PHY speed according to SControl speed
+ */
+ if ((val & 0xf0) == 0x10)
+ writelfl(0x7, lp_phy_addr);
+ else
+ writelfl(0x227, lp_phy_addr);
}
writelfl(val, addr);
return 0;
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