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authorMark Lord <liml@rtr.ca>2008-05-28 13:41:52 -0400
committerJeff Garzik <jgarzik@redhat.com>2008-05-30 12:37:26 -0400
commit0388a8c0d54aa039758a8eca68d82325a563f8db (patch)
treea31e9f2daefd2231dc1807961f6c97bc561abbc2
parentb406c7a6655da7a2fcd9f72e41262f93ff707748 (diff)
sata_mv: implement SoC guideline SATA_S11
The 5182 System-On-Chip (SOC) variant wants certain lower bits to be cleared on any write to the PHY_MODE3 register. If/when support is added for other SOC variants, we'll need some way to uniquely identify the 5182, and not perform this workaround for the others. But for now, it is the only SOC variant we support here. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
-rw-r--r--drivers/ata/sata_mv.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 17093e600d8..acf347f71a2 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -72,7 +72,7 @@
#include <linux/libata.h>
#define DRV_NAME "sata_mv"
-#define DRV_VERSION "1.23"
+#define DRV_VERSION "1.24"
enum {
/* BAR's are enumerated in terms of pci_resource_start() terms */
@@ -2558,6 +2558,10 @@ static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
m3 = readl(port_mmio + PHY_MODE3);
m3 = (m3 & 0x1f) | (0x5555601 << 5);
+ /* Guideline 88F5182 (GL# SATA-S11) */
+ if (IS_SOC(hpriv))
+ m3 &= ~0x1c;
+
if (fix_phy_mode4) {
u32 m4;