Messages in this thread | | | Date | Tue, 2 Nov 2021 14:05:31 +0000 | Subject | Re: [PATCH v1 00/15] create power sequencing subsystem | From | Caleb Connolly <> |
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Hi Dmitry,
On 06/10/2021 04:53, Dmitry Baryshkov wrote: > This is a proposed power sequencer subsystem. This is a > generification of the MMC pwrseq code. The subsystem tries to abstract > the idea of complex power-up/power-down/reset of the devices. > > The primary set of devices that promted me to create this patchset is > the Qualcomm BT+WiFi family of chips. They reside on serial+platform > or serial + SDIO interfaces (older generations) or on serial+PCIe (newer > generations). They require a set of external voltage regulators to be > powered on and (some of them) have separate WiFi and Bluetooth enable > GPIOs. > > The major drawback for now is the lack of proper PCIe integration > At this moment support for PCIe is hacked up to be able to test the > PCIe part of qca6390. Proper PCIe support would require automatically > powering up the devices before the scan basing on the proper device > structure in the device tree. This two last patches are noted as WIP and > are included into the patchset for the purpose of testing WiFi on newer > chips (like qca6390/qca6391). > > Changes since RFC v2: > - Add documentation for the pwrseq code. Document data structures, > macros and exported functions. > - Export of_pwrseq_xlate_onecell() > - Add separate pwrseq_set_drvdata() function to follow the typical API > design > - Remove pwrseq_get_optional()/devm_pwrseq_get_optional() > - Moved code to handle old mmc-pwrseq binding to the MMC patch > - Split of_pwrseq_xlate_onecell() support to a separate patch > > Changes since RFC v1: > - Provider pwrseq fallback support > - Implement fallback support in pwrseq_qca. > - Mmove susclk handling to pwrseq_qca. > - Significantly simplify hci_qca.c changes, by dropping all legacy > code. Now hci_qca uses only pwrseq calls to power up/down bluetooth > parts of the chip. > > > Tested-by: Caleb Connolly <caleb.connolly@linaro.org> [Tested on the OnePlus 6]
-- Kind Regards, Caleb (they/them)
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