Commit f222c73a authored by Hans de Goede's avatar Hans de Goede
Browse files

sunxi: ahci: Add a delay after enabling target power



If the target power is connected through a gpio, then give the target some
time to power up before continuing with ahci / sata probing, this avoids
link timeouts, without penalizing other boards where there is no target
power gpio.

Why 500 ms ? I started with 200, that was not enough, then I went to 500 which
worked, lowering it to 350 broke things again, so 500 seems the minimum my
vertex2 needs to be ready to get probed.
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Acked-by: default avatarIan Campbell <ijc@hellion.org.uk>
parent 86b49093
...@@ -76,6 +76,8 @@ void scsi_init(void) ...@@ -76,6 +76,8 @@ void scsi_init(void)
#ifdef CONFIG_SATAPWR #ifdef CONFIG_SATAPWR
gpio_request(CONFIG_SATAPWR, "satapwr"); gpio_request(CONFIG_SATAPWR, "satapwr");
gpio_direction_output(CONFIG_SATAPWR, 1); gpio_direction_output(CONFIG_SATAPWR, 1);
/* Give attached sata device time to power-up to avoid link timeouts */
mdelay(500);
#endif #endif
if (sunxi_ahci_phy_init(SUNXI_SATA_BASE) < 0) if (sunxi_ahci_phy_init(SUNXI_SATA_BASE) < 0)
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment