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reset: socfpga: Poll for reset status after deassert reset
authorLey Foon Tan <ley.foon.tan@intel.com>
Fri, 10 Jan 2020 05:48:37 +0000 (13:48 +0800)
committerMarek Vasut <marex@denx.de>
Mon, 3 Feb 2020 08:26:14 +0000 (09:26 +0100)
commit9173d0d830b181cb46226a11e86e2c6993aae86c
treeaf6a8bf98a4dd0ecc55bd584cb524cc20d8de6f6tree | snapshot
parenta2d877560f1e03ea9a0a938ef7e496d1b0e611e8commit | diff
reset: socfpga: Poll for reset status after deassert reset

In Cyclone 5 SoC platform, the first USB probing is failed but second
probing is success. DWC2 USB driver read gsnpsid register right after
de-assert reset, but controller is not ready yet and it returns gsnpsid 0.
Polling reset status after de-assert reset to solve the issue.

Retry with this fix more than 10 times without issue.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
drivers/reset/reset-socfpga.c diff | blob | history
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