diff options
author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2015-12-31 21:58:38 -0800 |
---|---|---|
committer | Sascha Hauer <s.hauer@pengutronix.de> | 2016-01-08 08:51:53 +0100 |
commit | 2cc01b1eed5f111eabb06b339748a63b0189a4ee (patch) | |
tree | 3bfcd249d715e2064ffb7ddf68296ae1948e192a /pbl | |
parent | cb3643d425f3d83748a67a0fec973512a5ea5956 (diff) | |
download | barebox-2cc01b1eed5f111eabb06b339748a63b0189a4ee.tar.gz barebox-2cc01b1eed5f111eabb06b339748a63b0189a4ee.tar.xz |
i.MX6: pci: Avoid aborts when asserting PCIe reset
When booting Barebox in the HW environment where PCIe core has been
used but not properly shut down, writing to PCIE_PL_PFLR in
imx6_pcie_assert_core_reset would cause data abort exception.
The problem can be easily reproduced on a i.MX6 based board with PCIe
slot populated with some device by doing:
> bootm -f -e 0x1050 <your board's>.img
Ignoring this exception seem to allow PCIe core to successfully
initialize and enumerate devices properly. This is also how Linux
Kernel version of the driver handles this situation -- it installs
dummy no-op abort handler at the beginning of device's probing.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'pbl')
0 files changed, 0 insertions, 0 deletions