PCI/pwrctl: Add a PCI power control driver for power sequenced devices

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Add a PCI power control driver that's capable of correctly powering up
devices using the power sequencing subsystem. The first users of this
driver are the ath11k module on QCA6390 and ath12k on WCN7850. These
packages require a certain delay between enabling the Bluetooth and WLAN
modules and the power sequencing subsystem takes care of it behind the
scenes.

Tested-by: Amit Pundir <amit.pundir@linaro.org>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD, SM8650-QRD & SM8650-HDK
Tested-by: Caleb Connolly <caleb.connolly@linaro.org> # OnePlus 8T
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20240612082019.19161-6-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

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Bartosz Golaszewski 2024-06-12 10:20:18 +02:00

parent 4565d2652a

commit 6140d185a4

3 changed files with 100 additions and 0 deletions

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9

drivers/pci/pwrctl/Kconfig

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2

drivers/pci/pwrctl/Makefile

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89

drivers/pci/pwrctl/pci-pwrctl-pwrseq.c

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