Re: [PATCH v2 0/9] Fixes/improvements for the PCI M.2 power sequencing driver

[Wei Deng <wei.deng@oss.qualcomm.com>]

Hi Mani,

Tested with WCN685x on both M.2 card (pwrseq-pcie-m2) and direct attach
(pwrseq-qcom-wcn). BT works correctly in both cases.

Tested-by: Wei Deng <wei.deng@oss.qualcomm.com>

On 5/8/2026 12:06 AM, Manivannan Sadhasivam via B4 Relay wrote:
> Hi,
> 
> This series has several key improvements and fixes to the M.2 power sequencing
> driver and also the BT HCI_QCA driver. Notably, this series allows the M.2 power
> sequencing driver to work with more M.2 cards, not just WCN7850. It also allows
> the BT HCI_QCA driver to detect whether it can control BT_EN (or W_DISABLE2#)
> signal on the connector and set the HCI_QUIRK_NON_PERSISTENT_SETUP quirk.
> 
> Testing
> =======
> 
> This series was tested on Lenovo Thinkpad T14s together with the below DTS
> patches:
> https://github.com/Mani-Sadhasivam/linux/commit/29534d15307551b2355eb254601dec511169f0aa
> https://github.com/Mani-Sadhasivam/linux/commit/f4eaacfe647674be200847092b43cdef2194fc55
> 
> Merge Strategy
> ==============
> 
> Since the BT HCI_QCA changes depend on the pwrseq changes, it would be good to
> merge the whole series through pwrseq tree or through an immutable branch.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
> ---
> Changes in v2:
> - Dropped the pwrseq_is_fixed() change in favor or exporting pwrseq device's dev
>   pointer and using it to check for the presence of W_DISABLE2# property
> - Dropped the BT_EN fix for the Qcom WCN devices since it will be handled
>   separately
> - Collected tags
> - Link to v1: https://patch.msgid.link/20260422-pwrseq-m2-bt-v1-0-720d02545a64@oss.qualcomm.com
> 
> ---
> Manivannan Sadhasivam (9):
>       power: sequencing: pcie-m2: Fix inconsistent function prefixes
>       power: sequencing: pcie-m2: Allow creating serdev for multiple PCI devices
>       power: sequencing: pcie-m2: Improve PCI device ID check
>       power: sequencing: pcie-m2: Create serdev for PCI devices present before probe
>       power: sequencing: pcie-m2: Create BT node based on the pci_device_id[] table
>       Bluetooth: hci_qca: Add M.2 Bluetooth device support using pwrseq
>       Bluetooth: hci_qca: Rename 'power_ctrl_enabled' to 'bt_en_available'
>       power: sequencing: Add an API to return the pwrseq device's 'dev' pointer
>       Bluetooth: hci_qca: Set 'bt_en_available' based on W_DISABLE2# presence in M.2 connector
> 
>  drivers/bluetooth/hci_qca.c               |  28 +++-
>  drivers/power/sequencing/core.c           |   9 ++
>  drivers/power/sequencing/pwrseq-pcie-m2.c | 234 ++++++++++++++++++++++--------
>  include/linux/pwrseq/consumer.h           |   7 +
>  4 files changed, 217 insertions(+), 61 deletions(-)
> ---
> base-commit: 254f49634ee16a731174d2ae34bc50bd5f45e731
> change-id: 20260422-pwrseq-m2-bt-abdaa71094eb
> 
> Best regards,
> --  
> Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
> 
> 

-- 
Best Regards,
Wei Deng