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| author | Daniel Golle <daniel@makrotopia.org> | 2025-09-17 00:37:27 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-22 13:13:54 +0300 |
| commit | d518314a1fa4e980a227d1b2bda1badf433cb932 (patch) | |
| tree | e58294f52cafb6ee61990f981dfae9e66f1f0616 /lib/mpi/mpi-mpow.c | |
| parent | daeb4037adf7d3349b4a1fb792f4bc9824686a4b (diff) | |
| download | linux-d518314a1fa4e980a227d1b2bda1badf433cb932.tar.xz | |
serial: 8250_mtk: Enable baud clock and manage in runtime PM
Some MediaTek SoCs got a gated UART baud clock, which currently gets
disabled as the clk subsystem believes it would be unused. This results in
the uart freezing right after "clk: Disabling unused clocks" on those
platforms.
Request the baud clock to be prepared and enabled during probe, and to
restore run-time power management capabilities to what it was before commit
e32a83c70cf9 ("serial: 8250-mtk: modify mtk uart power and clock
management") disable and unprepare the baud clock when suspending the UART,
prepare and enable it again when resuming it.
Fixes: e32a83c70cf9 ("serial: 8250-mtk: modify mtk uart power and clock management")
Fixes: b6c7ff2693ddc ("serial: 8250_mtk: Simplify clock sequencing and runtime PM")
Cc: stable <stable@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/de5197ccc31e1dab0965cabcc11ca92e67246cf6.1758058441.git.daniel@makrotopia.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/mpi/mpi-mpow.c')
0 files changed, 0 insertions, 0 deletions