In SiFive unmatched board, the reset of the USB hub, PCIe-USB bridge, and
ULPI rely on the power-cycling. However, sometimes the rebooting is without
power-cycling. To ensure these devices will be reset in each rebooting,
here always reset these devices in the spl_board_init_f().
In addition, because the reset pint of these four devices incluing GEMGXL
connects to the GPIO, the 1st patch creates a new wrapper,
spl_reset_device_by_gpio(), to address the GPIO operation during the reset.
Vincent Chen (2):
board: sifive: unmatched: refine GEMGXL initialized function in SPL
board: sifive: unmatched: reset USB hub, PCIe-USB bridge, and ULPI
device in SPL
board/sifive/unmatched/spl.c | 90 +++++++++++++++++++++++++++++++++++---------
1 file changed, 73 insertions(+), 17 deletions(-)
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2.7.4
