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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>
36 lines
874 B
Plaintext
36 lines
874 B
Plaintext
Sandbox pmic
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This device uses two drivers:
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- drivers/power/pmic/sandbox.c (for parent device)
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- drivers/power/regulator/sandbox.c (for child regulators)
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This file describes the binding info for the PMIC driver.
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To bind the regulators, please read the regulator binding info:
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- doc/device-tree-bindings/regulator/sandbox.txt
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Required PMIC node properties:
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- compatible: "sandbox,pmic"
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- reg = 0x40
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Required PMIC's "emul" subnode, with property:
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- compatible: "sandbox,i2c-pmic"
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With the above properties, the pmic device can be used for read/write only.
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To bind each regulator, the optional regulator subnodes should exists.
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Optional subnodes:
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- ldo/buck subnodes of each device's regulator (see regulator binding info)
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Example:
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sandbox_pmic {
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compatible = "sandbox,pmic";
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reg = <0x40>;
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/* Mandatory for I/O */
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emul {
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compatible = "sandbox,i2c-pmic";
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};
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};
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