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This commit adds emulation of sandbox PMIC device, which includes: - PMIC I2C emulation driver - PMIC I/O driver (UCLASS_PMIC) - PMIC regulator driver (UCLASS_REGULATOR) The sandbox PMIC has 12 significant registers and 4 as padding to 16 bytes, which allows using 'i2c md' command with the default count (16). The sandbox PMIC provides regulators: - 2x BUCK - 2x LDO Each, with adjustable output: - Enable state - Voltage - Current limit (LDO1/BUCK1 only) - Operation mode (different for BUCK and LDO) Each attribute has it's own register, beside the enable state, which depends on operation mode. The header file: sandbox_pmic.h includes PMIC's default register values, which are set on i2c pmic emul driver's probe() method. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Tested on sandbox: Tested-by: Simon Glass <sjg@chromium.org>
64 lines
2.5 KiB
Plaintext
64 lines
2.5 KiB
Plaintext
config DM_REGULATOR
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bool "Enable Driver Model for REGULATOR drivers (UCLASS_REGULATOR)"
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depends on DM
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---help---
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This config enables the driver model regulator support.
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UCLASS_REGULATOR - designed to provide a common API for basic regulator's
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functions, like get/set Voltage or Current value, enable state, etc...
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Note:
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When enabling this, please read the description, found in the files:
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- 'include/power/pmic.h'
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- 'include/power/regulator.h'
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- 'drivers/power/pmic/pmic-uclass.c'
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- 'drivers/power/pmic/regulator-uclass.c'
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It's important to call the device_bind() with the proper node offset,
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when binding the regulator devices. The pmic_bind_childs() can be used
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for this purpose if PMIC I/O driver is implemented or dm_scan_fdt_node()
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otherwise. Detailed information can be found in the header file.
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config DM_REGULATOR_MAX77686
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bool "Enable Driver Model for REGULATOR MAX77686"
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depends on DM_REGULATOR && DM_PMIC_MAX77686
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---help---
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This config enables implementation of driver-model regulator uclass
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features for REGULATOR MAX77686. The driver implements get/set api for:
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value, enable and mode.
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config DM_REGULATOR_FIXED
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bool "Enable Driver Model for REGULATOR Fixed value"
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depends on DM_REGULATOR
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---help---
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This config enables implementation of driver-model regulator uclass
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features for fixed value regulators. The driver implements get/set api
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for enable and get only for voltage value.
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config DM_REGULATOR_SANDBOX
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bool "Enable Driver Model for Sandbox PMIC regulator"
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depends on DM_REGULATOR && DM_PMIC_SANDBOX
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---help---
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Enable the regulator driver for emulated Sandbox PMIC.
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The emulated PMIC device depends on two drivers:
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- sandbox PMIC I/O driver - implements dm pmic operations
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- sandbox PMIC regulator driver - implements dm regulator operations
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- sandbox PMIC i2c emul driver - emulates the PMIC's I2C transmission
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The regulator driver provides uclass operations for sandbox PMIC's
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regulators. The driver implements get/set api for: voltage, current,
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operation mode and enable state.
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The driver supports LDO and BUCK regulators.
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The Sandbox PMIC info:
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* I/O interface:
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- I2C chip address: 0x40
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- first register address: 0x0
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- register count: 0x10
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* Adjustable outputs:
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- 2x LDO
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- 2x BUCK
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- Each, with a different operating conditions (header).
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* Reset values:
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- set by i2c emul driver's probe() (defaults in header)
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A detailed information can be found in header: '<power/sandbox_pmic.h>'
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Binding info: 'doc/device-tree-bindings/pmic/max77686.txt'
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