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linux/drivers/power/sequencing/Kconfig

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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
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
power: sequencing: extend build coverage with COMPILE_TEST=y Enable building the pwrseq drivers with COMPILE_TEST enabled. This makes it easier to build-test them. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20250624-pwrseq-match-defines-v1-2-a59d90a951f1@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-06-24 16:32:19 +02:00
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
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
power: sequencing: extend build coverage with COMPILE_TEST=y Enable building the pwrseq drivers with COMPILE_TEST enabled. This makes it easier to build-test them. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20250624-pwrseq-match-defines-v1-2-a59d90a951f1@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-06-24 16:32:19 +02:00
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
power: sequencing: Add the Power Sequencing driver for the PCIe M.2 connectors This driver is used to control the PCIe M.2 connectors of different Mechanical Keys attached to the host machines and supporting different interfaces like PCIe/SATA, USB/UART etc... Currently, this driver supports only the Mechanical Key M connectors with PCIe interface. The driver also only supports driving the mandatory 3.3v and optional 1.8v power supplies. The optional signals of the Key M connectors are not currently supported. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com> Link: https://lore.kernel.org/r/20260122-pci-m2-v6-4-575da9f97239@oss.qualcomm.com [Bartosz: rename pwrseq_pcie_m2_free_resources() to pwrseq_pcie_m2_free_regulators()] Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
2026-01-22 22:46:54 +05:30
power: sequencing: pcie-m2: enforce PCI and OF dependencies The driver fails to build when PCI is disabled: drivers/power/sequencing/pwrseq-pcie-m2.c: In function 'pwrseq_pcie_m2_register_notifier': drivers/power/sequencing/pwrseq-pcie-m2.c:368:54: error: 'pci_bus_type' undeclared (first use in this function); did you mean 'pci_pcie_type'? 368 | ret = bus_register_notifier(&pci_bus_type, &ctx->nb); | ^~~~~~~~~~~~ | pci_pcie_type Similarly, when CONFIG_OF is disabled: drivers/power/sequencing/pwrseq-pcie-m2.c: In function 'pwrseq_m2_pcie_create_bt_node': drivers/power/sequencing/pwrseq-pcie-m2.c:191:9: error: implicit declaration of function 'of_changeset_init' [-Wimplicit-function-declaration] 191 | of_changeset_init(ctx->ocs); | ^~~~~~~~~~~~~~~~~ Make both dependencies unconditional to prevent compile-testing in either configuration. Fixes: 3f736aecbdc8 ("power: sequencing: pcie-m2: Create serdev device for WCN7850 bluetooth") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/20260401091847.305294-1-arnd@kernel.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
2026-04-01 11:16:25 +02:00
power: sequencing: pcie-m2: add SERIAL_DEV_BUS dependency The newly added serdev code fails to link when serdev is turned off: arm-linux-gnueabi-ld: drivers/power/sequencing/pwrseq-pcie-m2.o: in function `pwrseq_pcie_m2_remove_serdev': pwrseq-pcie-m2.c:(.text+0xc8): undefined reference to `serdev_device_remove' arm-linux-gnueabi-ld: drivers/power/sequencing/pwrseq-pcie-m2.o: in function `pwrseq_m2_pcie_notify': pwrseq-pcie-m2.c:(.text+0x69c): undefined reference to `of_find_serdev_controller_by_node' arm-linux-gnueabi-ld: pwrseq-pcie-m2.c:(.text+0x6f8): undefined reference to `serdev_device_alloc' arm-linux-gnueabi-ld: pwrseq-pcie-m2.c:(.text+0x724): undefined reference to `serdev_device_add' Add another Kconfig dependency for this Fixes: 3f736aecbdc8 ("power: sequencing: pcie-m2: Create serdev device for WCN7850 bluetooth") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://patch.msgid.link/20260401191030.948046-1-arnd@kernel.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
2026-04-01 21:10:13 +02:00
power: sequencing: pcie-m2: enforce PCI and OF dependencies The driver fails to build when PCI is disabled: drivers/power/sequencing/pwrseq-pcie-m2.c: In function 'pwrseq_pcie_m2_register_notifier': drivers/power/sequencing/pwrseq-pcie-m2.c:368:54: error: 'pci_bus_type' undeclared (first use in this function); did you mean 'pci_pcie_type'? 368 | ret = bus_register_notifier(&pci_bus_type, &ctx->nb); | ^~~~~~~~~~~~ | pci_pcie_type Similarly, when CONFIG_OF is disabled: drivers/power/sequencing/pwrseq-pcie-m2.c: In function 'pwrseq_m2_pcie_create_bt_node': drivers/power/sequencing/pwrseq-pcie-m2.c:191:9: error: implicit declaration of function 'of_changeset_init' [-Wimplicit-function-declaration] 191 | of_changeset_init(ctx->ocs); | ^~~~~~~~~~~~~~~~~ Make both dependencies unconditional to prevent compile-testing in either configuration. Fixes: 3f736aecbdc8 ("power: sequencing: pcie-m2: Create serdev device for WCN7850 bluetooth") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/20260401091847.305294-1-arnd@kernel.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
2026-04-01 11:16:25 +02:00
power: sequencing: Add the Power Sequencing driver for the PCIe M.2 connectors This driver is used to control the PCIe M.2 connectors of different Mechanical Keys attached to the host machines and supporting different interfaces like PCIe/SATA, USB/UART etc... Currently, this driver supports only the Mechanical Key M connectors with PCIe interface. The driver also only supports driving the mandatory 3.3v and optional 1.8v power supplies. The optional signals of the Key M connectors are not currently supported. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com> Link: https://lore.kernel.org/r/20260122-pci-m2-v6-4-575da9f97239@oss.qualcomm.com [Bartosz: rename pwrseq_pcie_m2_free_resources() to pwrseq_pcie_m2_free_regulators()] Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
2026-01-22 22:46:54 +05:30
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