threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
36 lines
1.2 KiB
Plaintext
36 lines
1.2 KiB
Plaintext
Microchip mcp4725 and mcp4726 DAC device driver
|
|
|
|
Required properties:
|
|
- compatible: Must be "microchip,mcp4725" or "microchip,mcp4726"
|
|
- reg: Should contain the DAC I2C address
|
|
- vdd-supply: Phandle to the Vdd power supply. This supply is used as a
|
|
voltage reference on mcp4725. It is used as a voltage reference on
|
|
mcp4726 if there is no vref-supply specified.
|
|
|
|
Optional properties (valid only for mcp4726):
|
|
- vref-supply: Optional phandle to the Vref power supply. Vref pin is
|
|
used as a voltage reference when this supply is specified.
|
|
- microchip,vref-buffered: Boolean to enable buffering of the external
|
|
Vref pin. This boolean is not valid without the vref-supply. Quoting
|
|
the datasheet: This is offered in cases where the reference voltage
|
|
does not have the current capability not to drop its voltage when
|
|
connected to the internal resistor ladder circuit.
|
|
|
|
Examples:
|
|
|
|
/* simple mcp4725 */
|
|
mcp4725@60 {
|
|
compatible = "microchip,mcp4725";
|
|
reg = <0x60>;
|
|
vdd-supply = <&vdac_vdd>;
|
|
};
|
|
|
|
/* mcp4726 with the buffered external reference voltage */
|
|
mcp4726@60 {
|
|
compatible = "microchip,mcp4726";
|
|
reg = <0x60>;
|
|
vdd-supply = <&vdac_vdd>;
|
|
vref-supply = <&vdac_vref>;
|
|
microchip,vref-buffered;
|
|
};
|