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author | Przemyslaw Marczak <p.marczak@samsung.com> | 2015-05-13 13:38:32 +0200 |
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committer | Simon Glass <sjg@chromium.org> | 2015-05-14 19:58:34 -0600 |
commit | 5d387d0df9816cdf05d7bce3b7379057068a7e58 (patch) | |
tree | fdb07e7f1beb9cc1afe1b1653298f33b4d57eb3c /doc/device-tree-bindings/pmic | |
parent | a989ec8dd4bb548708220146391d5ed7b575331f (diff) |
sandbox: add: sandbox PMIC device drivers: I2C emul, pmic, regulator
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>
Diffstat (limited to 'doc/device-tree-bindings/pmic')
-rw-r--r-- | doc/device-tree-bindings/pmic/sandbox.txt | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/pmic/sandbox.txt b/doc/device-tree-bindings/pmic/sandbox.txt new file mode 100644 index 0000000000..d84c97717b --- /dev/null +++ b/doc/device-tree-bindings/pmic/sandbox.txt @@ -0,0 +1,35 @@ +Sandbox pmic + +This device uses two drivers: +- drivers/power/pmic/sandbox.c (for parent device) +- drivers/power/regulator/sandbox.c (for child regulators) + +This file describes the binding info for the PMIC driver. + +To bind the regulators, please read the regulator binding info: +- doc/device-tree-bindings/regulator/sandbox.txt + +Required PMIC node properties: +- compatible: "sandbox,pmic" +- reg = 0x40 + +Required PMIC's "emul" subnode, with property: +- compatible: "sandbox,i2c-pmic" + +With the above properties, the pmic device can be used for read/write only. +To bind each regulator, the optional regulator subnodes should exists. + +Optional subnodes: +- ldo/buck subnodes of each device's regulator (see regulator binding info) + +Example: + +sandbox_pmic { + compatible = "sandbox,pmic"; + reg = <0x40>; + + /* Mandatory for I/O */ + emul { + compatible = "sandbox,i2c-pmic"; + }; +}; |