Adaptive Voltage Scaling is a technology used in TI SoCs to optimize the operating voltage based on characterization data written to efuse during production.
Add support for Adaptive Voltage scaling class 0 support for AM6 family of devices. Adaptive voltage scaling class 0 implies that optimized voltage values for a particular OPP of a particular voltage domain are read from Efuse and programmed on the pmic/regulator.
Tested on AM654-EVM for MPU @800 MHz. Tested on J721e-evm for MPU.
The series is based on top of the branch:
https://github.com/lokeshvutla/u-boot/tree/devel/j721e-full-boot
Changes in v3:
* Extended the support for j721e-evm. * Moved vtm node under r5-board dts.
Changes in v2:
* Avoided creation of new uclass. AVS driver is now under misc.
Keerthy (11): clk: clk-ti-sci: Notify AVS driver upon setting clock rate misc: k3_avs: Add j721e support power: pmic: tps65941: Add support for tps65941 family of PMICs power: regulator: tps65941: add regulator support arm: mach-k3: am6_init: Initialize AVS class 0 arm: mach-k3: j721e_init: Initialize avs class 0 arm: dts: k3-am654-r5-base-board: Add VTM node arm: dts: k3-j721e-r5-common-proc-board: Add VTM node arm: dts: k3-j721e-r5-common: Add tps65941 node and dependent wkup_i2c0 node arm: dts: k3-j721e-r5-common-proc-board: Hook buck12_reg to vtm supply configs: j721e_evm_r5_defconfig: Enable AVS Class 0 & dependent configs
Tero Kristo (7): misc: k3_avs: add driver for K3 Adaptive Voltage Scaling Class 0 power: regulator: tps6236x: add support for tps6236x regulators arm: dts: k3-am654-r5-base-board: enable wkup_i2c0 driver for spl arm: dts: k3-am654-r5-base-board: add supply rail for MPU arm: dts: k3-am654-r5-base-board: enable wkup_vtm0 node and link in supplies configs: am65x_evm_r5_defconfig: Enable TPS62363 regulator support configs: am65x_evm_r5_defconfig: Enable AVS class 0 support
arch/arm/dts/k3-am654-r5-base-board.dts | 27 ++ arch/arm/dts/k3-j721e-mcu-wakeup.dtsi | 11 + .../arm/dts/k3-j721e-r5-common-proc-board.dts | 44 ++ arch/arm/mach-k3/am6_init.c | 7 + arch/arm/mach-k3/j721e_init.c | 7 + configs/am65x_evm_r5_defconfig | 2 + configs/j721e_evm_r5_defconfig | 9 + drivers/clk/clk-ti-sci.c | 5 + drivers/misc/Kconfig | 9 + drivers/misc/Makefile | 1 + drivers/misc/k3_avs.c | 388 +++++++++++++++++ drivers/power/pmic/Kconfig | 7 + drivers/power/pmic/Makefile | 1 + drivers/power/pmic/tps65941.c | 83 ++++ drivers/power/regulator/Kconfig | 20 + drivers/power/regulator/Makefile | 2 + drivers/power/regulator/tps62360_regulator.c | 123 ++++++ drivers/power/regulator/tps65941_regulator.c | 407 ++++++++++++++++++ include/k3-avs.h | 30 ++ include/power/tps65941.h | 26 ++ 20 files changed, 1209 insertions(+) create mode 100644 drivers/misc/k3_avs.c create mode 100644 drivers/power/pmic/tps65941.c create mode 100644 drivers/power/regulator/tps62360_regulator.c create mode 100644 drivers/power/regulator/tps65941_regulator.c create mode 100644 include/k3-avs.h create mode 100644 include/power/tps65941.h