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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>
44 lines
1.5 KiB
Plaintext
44 lines
1.5 KiB
Plaintext
config DM_PMIC
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bool "Enable Driver Model for PMIC drivers (UCLASS_PMIC)"
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depends on DM
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---help---
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This config enables the driver-model PMIC support.
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UCLASS_PMIC - designed to provide an I/O interface for PMIC devices.
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For the multi-function PMIC devices, this can be used as parent I/O
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device for each IC's interface. Then, each children uses its parent
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for read/write. For detailed description, please refer to the files:
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- 'drivers/power/pmic/pmic-uclass.c'
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- 'include/power/pmic.h'
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config DM_PMIC_MAX77686
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bool "Enable Driver Model for PMIC MAX77686"
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depends on DM_PMIC
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---help---
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This config enables implementation of driver-model pmic uclass features
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for PMIC MAX77686. The driver implements read/write operations.
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config DM_PMIC_SANDBOX
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bool "Enable Driver Model for emulated Sandbox PMIC "
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depends on DM_PMIC
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---help---
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Enable the driver for Sandbox PMIC emulation. The emulated PMIC device
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depends on two drivers:
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- sandbox PMIC I/O driver - implements dm pmic operations
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- sandbox PMIC i2c emul driver - emulates the PMIC's I2C transmission
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A detailed information can be found in header: '<power/sandbox_pmic.h>'
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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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Driver binding info: doc/device-tree-bindings/pmic/sandbox.txt
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