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| author | Hans de Goede <hdegoede@redhat.com> | 2014-11-14 16:27:07 +0100 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2014-11-25 13:38:46 +0100 |
| commit | f222c73afaaa2430f700f56e7f3b6d8889b96e8c (patch) | |
| tree | b0999fe6d70c2da114e8c36fd9623557bd59f86b /board | |
| parent | 86b4909340a272a1a040db61565f639d845b170f (diff) | |
| download | blackbird-obmc-uboot-f222c73afaaa2430f700f56e7f3b6d8889b96e8c.tar.gz blackbird-obmc-uboot-f222c73afaaa2430f700f56e7f3b6d8889b96e8c.zip | |
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: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Diffstat (limited to 'board')
| -rw-r--r-- | board/sunxi/ahci.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/board/sunxi/ahci.c b/board/sunxi/ahci.c index 5e123285b0..b7f0dda205 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) |
