Commit graph

5 commits

Author SHA1 Message Date
Hans de Goede
9fbb0c3aa4 sunxi: Turn satapwr on from board_init
There are 2 reasons for doing this:

1) The main reason for doing this is to move it outside of
   board/sunxi/ahci.c, so that it can be used on boards which use
   a usb<->sata chip too;
2) While doing this I realized that doing it from board_init also meant
   doing it much earlier. Some printf get_timer(0) calls show that the
   time between board_init() and scsi_init() is more then 600 ms,
   so we can drop the mdelay(500)

While at it also drop the printf("SUNXI SCSI INIT\n") AHCI init is
noisy enough by itself.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2016-03-23 22:04:13 +01:00
Scott Wood
9efaca3e84 ahci: mmio_base is a virtual address
Don't store it in a u32.

Don't dereference the bus address as if it were a virtual address
(fixes 284231e49a ("ahci: Support splitting of read transactions
into multiple chunks")).

Fixes crash on boot in MPC8641HPCN_36BIT target.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Cc: Vadim Bendebury <vbendeb@chromium.org>
Acked-by: York Sun <yorksun@freescale.com>
2015-04-18 16:54:29 -04:00
Hans de Goede
f222c73afa 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>
2014-11-25 13:38:46 +01:00
Simon Glass
e6a8b0dabc dm: sunxi: Make sure that GPIOs are requested
The scsi_init() function uses a GPIO so should request it. There is no
way to return an error here, and the request may be made multiple times,
so just ignore errors for now.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2014-11-05 13:09:58 +01:00
Ian Campbell
a6e50a88d8 ahci: provide sunxi SATA driver using AHCI platform framework
This enables the necessary clocks, in AHB0 and in PLL6_CFG. This is done
for sun7i only since I don't have access to any other sunxi platforms
with sata included.

The PHY setup is derived from the Alwinner releases and Linux, but is mostly
undocumented.

The Allwinner AHCI controller also requires some magic (and, again,
undocumented) DMA initialisation when starting a port.  This is added under a
suitable ifdef.

This option is enabled for Cubieboard, Cubieboard2 and Cubietruck based on
contents of Linux DTS files, including SATA power pin config taken from the
DTS. All build tested, but runtime tested on Cubieboard2 and Cubietruck only.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2014-07-31 15:37:22 +02:00