linux/drivers/power/sequencing/Makefile

# SPDX-License-Identifier: GPL-2.0

obj-$(CONFIG_POWER_SEQUENCING)		+= pwrseq-core.o
pwrseq-core-y				:= core.o

obj-$(CONFIG_POWER_SEQUENCING_QCOM_WCN)	+= pwrseq-qcom-wcn.o
obj-$(CONFIG_POWER_SEQUENCING_TH1520_GPU) += pwrseq-thead-gpu.o
power: sequencing: implement the pwrseq core Implement the power sequencing subsystem allowing devices to share complex powering-up and down procedures. It's split into the consumer and provider parts but does not implement any new DT bindings so that the actual power sequencing is never revealed in the DT representation. 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: Krzysztof Kozlowski <krzk@kernel.org> Link: https://lore.kernel.org/r/20240605123850.24857-2-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> 2024-06-05 14:38:49 +02:00			`# SPDX-License-Identifier: GPL-2.0`

			`obj-$(CONFIG_POWER_SEQUENCING) += pwrseq-core.o`
			`pwrseq-core-y := core.o`
power: pwrseq: add a driver for the PMU module on the QCom WCN chipsets This adds the power sequencing driver for the PMU modules present on the Qualcomm WCN Bluetooth and Wifi chipsets. It uses the pwrseq subsystem and knows how to match the sequencer to the consumer device by verifying the relevant properties and DT layout. Using this driver will allow the BT and WLAN drivers to respect the required delays between enabling the two modules. Tested-by: Amit Pundir <amit.pundir@linaro.org> Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD, SM8650-QRD & SM8650-HDK Tested-by: Caleb Connolly <caleb.connolly@linaro.org> # OnePlus 8T Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240605123850.24857-3-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> 2024-06-05 14:38:50 +02:00
			`obj-$(CONFIG_POWER_SEQUENCING_QCOM_WCN) += pwrseq-qcom-wcn.o`
power: sequencing: Add T-HEAD TH1520 GPU power sequencer driver Introduce the pwrseq-thead-gpu driver, a power sequencer provider for the Imagination BXM-4-64 GPU on the T-HEAD TH1520 SoC. This driver controls an auxiliary device instantiated by the AON power domain. The TH1520 GPU requires a specific sequence to correctly initialize and power down its resources: - Enable GPU clocks (core and sys). - De-assert the GPU clock generator reset (clkgen_reset). - Introduce a short hardware-required delay. - De-assert the GPU core reset. The power-down sequence performs these steps in reverse. Implement this sequence via the pwrseq_power_on and pwrseq_power_off callbacks. Crucially, the driver's match function is called when a consumer (the Imagination GPU driver) requests the "gpu-power" target. During this match, the sequencer uses clk_bulk_get() and reset_control_get_exclusive() on the consumer's device to obtain handles to the GPU's "core" and "sys" clocks, and the GPU core reset. These, along with clkgen_reset obtained from parent aon node, allow it to perform the complete sequence. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com> Link: https://lore.kernel.org/r/20250623-apr_14_for_sending-v6-1-6583ce0f6c25@samsung.com [Bartosz: use a ternary operator instead of implicitly casting the result of a boolean expression to int] Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> 2025-06-23 13:42:39 +02:00			`obj-$(CONFIG_POWER_SEQUENCING_TH1520_GPU) += pwrseq-thead-gpu.o`