Before the actual initialization do a hard reset of the SATA port and the
connected device.
changes v1->v2:
- add comment for udelay
Signed-off-by: Michael Walle <mich...@walle.cc>
Cc: Prafulla Wadaskar <prafu...@marvell.com>
Cc: Albert Aribaud <albert.u.b...@aribaud.net>
---
drivers/block/mvsata_ide.c | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletions(-)
diff --git a/drivers/block/mvsata_ide.c b/drivers/block/mvsata_ide.c
index 3d6993a..83574ed 100644
--- a/drivers/block/mvsata_ide.c
+++ b/drivers/block/mvsata_ide.c
@@ -33,7 +33,9 @@
/* SATA port registers */
struct mvsata_port_registers {
- u32 reserved1[192];
+ u32 reserved0[10];
+ u32 edma_cmd;
+ u32 reserved1[181];
/* offset 0x300 : ATA Interface registers */
u32 sstatus;
u32 serror;
@@ -76,6 +78,7 @@ struct mvsata_port_registers {
* and for SStatus DETection.
*/
+#define MVSATA_EDMA_CMD_ATA_RST 0x00000004
#define MVSATA_SCONTROL_DET_MASK 0x0000000F
#define MVSATA_SCONTROL_DET_NONE 0x00000000
#define MVSATA_SCONTROL_DET_INIT 0x00000001
@@ -115,6 +118,11 @@ static int mvsata_ide_initialize_port(struct
mvsata_port_registers *port)
u32 status;
u32 timeleft = 10000; /* wait at most 10 ms for SATA reset to complete
*/
+ /* Hard reset */
+ writel(MVSATA_EDMA_CMD_ATA_RST, &port->edma_cmd);
+ udelay(25); /* taken from original marvell port */
+ writel(0, &port->edma_cmd);
+
/* Set control IPM to 3 (no low power) and DET to 1 (initialize) */
control = readl(&port->scontrol);
control = (control & ~MVSATA_SCONTROL_MASK) | MVSATA_PORT_INIT;
--
1.7.2.3
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
