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: Hans de Goede <hdego...@redhat.com>
---
board/sunxi/ahci.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/board/sunxi/ahci.c b/board/sunxi/ahci.c
index 5e12328..b7f0dda 100644
--- a/board/sunxi/ahci.c
+++ b/board/sunxi/ahci.c
@@ -76,6 +76,8 @@ void scsi_init(void)
#ifdef CONFIG_SATAPWR
gpio_request(CONFIG_SATAPWR, "satapwr");
gpio_direction_output(CONFIG_SATAPWR, 1);
+ /* Give attached sata device time to power-up to avoid link timeouts */
+ mdelay(500);
#endif
if (sunxi_ahci_phy_init(SUNXI_SATA_BASE) < 0)
--
2.1.0
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