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authorDmitry Osipenko <[email protected]>2021-05-16 19:30:40 +0300
committerThierry Reding <[email protected]>2021-05-31 15:16:46 +0200
commit4782c0a5dd88e3797426e08c5c437e95a3156631 (patch)
tree35496e4c64a046e6631a30a22bfe4b0d95acd783 /lib/mpi/mpi-sub-ui.c
parent5d0f1c8ab10aee9934a418ddd7ec977b01ab2370 (diff)
clk: tegra: Don't deassert reset on enabling clocks
The Tegra clock driver contains legacy code which deasserts hardware reset when peripheral clocks are enabled. This behaviour comes from a pre-CCF era of the Tegra drivers. This is unacceptable for modern kernel drivers which use generic CCF and reset-control APIs because it breaks assumptions of the drivers about clk/reset sequences and about reset-propagation delays. Hence remove the awkward legacy behaviour from the clk driver. In particular PMC driver assumes that hardware blocks remains in reset while power domain is turning on, but the clk driver deasserts the reset before power clamp is removed, hence breaking the driver's assumption. Signed-off-by: Dmitry Osipenko <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-sub-ui.c')
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