2024-09-09 08:52:07 +00:00
|
|
|
Embedded Power Measurement(EPM) using Cypress Progammable System on a chip (PSOC)
|
|
|
|
|
|
|
|
|
|
The EPM using the PSoC5 is used by clients to measure on target power
|
|
|
|
|
measurement on supported channels. The PSoC5 is a microcontroller
|
|
|
|
|
that is communicated over the SPI from the MSM. Primary configuration
|
|
|
|
|
supports upto 31 channels and the scope of the driver is to support
|
|
|
|
|
userspace clients.
|
|
|
|
|
|
|
|
|
|
EPM node
|
|
|
|
|
|
|
|
|
|
Required properties:
|
|
|
|
|
- compatible : should be "cy,epm-adc-cy8c5568lti-114" for EPM using PSoC5.
|
|
|
|
|
- reg : chip select for the device.
|
|
|
|
|
- interrupt-parent : should be phandle of the interrupt controller
|
|
|
|
|
servicing the interrupt for this device.
|
|
|
|
|
- spi-max-frequency : existing support is set for 960kHz.
|
|
|
|
|
- qcom,channels : The number of voltage and current channels that
|
|
|
|
|
are supported.
|
|
|
|
|
- qcom,gain : The gain for each of the supported channels.
|
|
|
|
|
- qcom,rsense : The rsense value for each channel. The current channels
|
|
|
|
|
rsense values units are in milliohms. The voltage channels
|
|
|
|
|
rsense value is 1.
|
|
|
|
|
- qcom,channel-type : Bitmak of channels to set as voltage and current.
|
|
|
|
|
These are platform dependent and the appropriate scaling
|
|
|
|
|
functions are used for returning voltage and current.
|
2024-09-09 08:57:42 +00:00
|
|
|
- qcom,<gpio-name>-gpio : Handle to the GPIO node, see "gpios property" in
|
|
|
|
|
Documentation/devicetree/bindings/gpio/gpio.txt.
|
|
|
|
|
"gpio-name" can be "epm-enable" which is the EPM global enable GPIO for powering up the PSoC.
|
