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cbb0140379
For the PCIE_PHY (also called PEXTP_PHY) type of RTFF hardware,
there is special handling setting CLK_DIS before performing the
NRESTORE sequence for resetting the RTFF and start sequencing
from a clean state.
That special handling, though, poses an issue in case the machine
specific bootchain (bootloader in particular) ends up booting the
kernel with both PCIe MAC and PHY enabled (not just power domains)
as doing so will partially corrupt the PCIe MAC/PHY registers in
an unpredictable manner, producing either an initialization fail
in the PCI-Express drivers, or even a hard lockup!
Resolve this by simply removing the special handling: in this case
the bootchain, or remote processors, setting is getting honored by
the later check for PWR_RTFF_SAVE_FLAG presence in the RTFF ctl
register.
Fixes:
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History
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| .. | ||
| actions | ||
| amlogic | ||
| apple | ||
| arm | ||
| bcm | ||
| imx | ||
| marvell | ||
| mediatek | ||
| qcom | ||
| renesas | ||
| rockchip | ||
| samsung | ||
| st | ||
| starfive | ||
| sunxi | ||
| tegra | ||
| thead | ||
| ti | ||
| xilinx | ||
| core.c | ||
| governor.c | ||
| Kconfig | ||
| Makefile | ||