Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Open Menu / Documentation / devicetree / bindings / mfd / mt6397.txt
Loading...
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
MediaTek MT6397/MT6323 Multifunction Device Driver

MT6397/MT6323 is a multifunction device with the following sub modules:
- Regulator
- RTC
- Audio codec
- GPIO
- Clock
- LED
- Keys
- Power controller

It is interfaced to host controller using SPI interface by a proprietary hardware
called PMIC wrapper or pwrap. MT6397/MT6323 MFD is a child device of pwrap.
See the following for pwarp node definitions:
../soc/mediatek/pwrap.txt

This document describes the binding for MFD device and its sub module.

Required properties:
compatible:
	"mediatek,mt6323" for PMIC MT6323
	"mediatek,mt6331" for PMIC MT6331 and MT6332
	"mediatek,mt6358" for PMIC MT6358 and MT6366
	"mediatek,mt6359" for PMIC MT6359
	"mediatek,mt6397" for PMIC MT6397

Optional subnodes:

- rtc
	Required properties: Should be one of follows
		- compatible: "mediatek,mt6323-rtc"
		- compatible: "mediatek,mt6331-rtc"
		- compatible: "mediatek,mt6358-rtc"
		- compatible: "mediatek,mt6397-rtc"
	For details, see ../rtc/rtc-mt6397.txt
- regulators
	Required properties:
		- compatible: "mediatek,mt6323-regulator"
	see ../regulator/mt6323-regulator.txt
		- compatible: "mediatek,mt6358-regulator"
	see ../regulator/mt6358-regulator.txt
		- compatible: "mediatek,mt6397-regulator"
	see ../regulator/mt6397-regulator.txt
- codec
	Required properties:
		- compatible: "mediatek,mt6397-codec" or "mediatek,mt6358-sound"
- clk
	Required properties:
		- compatible: "mediatek,mt6397-clk"
- led
	Required properties:
		- compatible: "mediatek,mt6323-led"
	see ../leds/leds-mt6323.txt

- keys
	Required properties: Should be one of the following
		- compatible: "mediatek,mt6323-keys"
		- compatible: "mediatek,mt6331-keys"
		- compatible: "mediatek,mt6397-keys"
	see ../input/mtk-pmic-keys.txt

- power-controller
	Required properties:
		- compatible: "mediatek,mt6323-pwrc"
	For details, see ../power/reset/mt6323-poweroff.txt

- pin-controller
	Required properties:
		- compatible: "mediatek,mt6397-pinctrl"
	For details, see ../pinctrl/pinctrl-mt65xx.txt

Example:
	pwrap: pwrap@1000f000 {
		compatible = "mediatek,mt8135-pwrap";

		...

		pmic {
			compatible = "mediatek,mt6397";

			codec: mt6397codec {
				compatible = "mediatek,mt6397-codec";
			};

			regulators {
				compatible = "mediatek,mt6397-regulator";

				mt6397_vpca15_reg: buck_vpca15 {
					regulator-compatible = "buck_vpca15";
					regulator-name = "vpca15";
					regulator-min-microvolt = <850000>;
					regulator-max-microvolt = <1400000>;
					regulator-ramp-delay = <12500>;
					regulator-always-on;
				};

				mt6397_vgp4_reg: ldo_vgp4 {
					regulator-compatible = "ldo_vgp4";
					regulator-name = "vgp4";
					regulator-min-microvolt = <1200000>;
					regulator-max-microvolt = <3300000>;
					regulator-enable-ramp-delay = <218>;
				};
			};
		};
	};