clk: en7523: add support for dedicated PCIe PERSTOUT reset

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Add support for resetting the PCIe lines with the PERSTOUT reset. These
special reset are controlled by the PCIC register and are specific to each
of the 3 PCIe lines.

Contrary to the dedicated reset register where 0 deassert and 1 assert the
reset line for the related bit, for PCIe PERSTOUT reset in the PCIC
register, the deassert and assert value is swapped, with 1 for deassert and
0 for assert. (HW have these bit set as 1 by default after a cold boot)
This is internally handled in the reset function.

PCI enable/disable are updated to drop PERSTOUT bits in favor dedicated
reset handling.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Brian Masney <bmasney@redhat.com>
Signed-off-by: Brian Masney <bmasney@redhat.com>

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Christian Marangi 2026-07-23 21:01:31 +02:00 • committed by Brian Masney

parent e6850b69b6

commit 6712f48eb3

1 changed files with 26 additions and 10 deletions

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drivers/clk/clk-en7523.c

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