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sifive_gpio: Add SiFive GPIO controller driver

Description

sifive_gpio: Add SiFive GPIO controller driver

This is present on both the FU540 and FU740, but only needed for the
FU740 in order to assert reset and power enable signals for its PCIe
controller.

Reviewed by: mhorne
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D31031

Details

Provenance
jrtc27Authored on Aug 7 2021, 6:27 PM
Reviewer
mhorne
Differential Revision
D31031: sifive_gpio: Add SiFive GPIO controller driver
Parents
rG90a089cf2a74: fu540_spi: Rename to sifive_spi
Branches
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Tags
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