| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | MediaTek MT6397/MT6323 Multifunction Device Driver |
| 2 | |
| 3 | MT6397/MT6323 is a multifunction device with the following sub modules: |
| 4 | - Regulator |
| 5 | - RTC |
| 6 | - Audio codec |
| 7 | - GPIO |
| 8 | - Clock |
| 9 | - LED |
| 10 | - Keys |
| 11 | - Power controller |
| 12 | |
| 13 | It is interfaced to host controller using SPI interface by a proprietary hardware |
| 14 | called PMIC wrapper or pwrap. MT6397/MT6323 MFD is a child device of pwrap. |
| 15 | See the following for pwarp node definitions: |
| 16 | ../soc/mediatek/mediatek,pwrap.yaml |
| 17 | |
| 18 | This document describes the binding for MFD device and its sub module. |
| 19 | |
| 20 | Required properties: |
| 21 | compatible: |
| 22 | "mediatek,mt6323" for PMIC MT6323 |
| 23 | "mediatek,mt6331" for PMIC MT6331 and MT6332 |
| 24 | "mediatek,mt6357" for PMIC MT6357 |
| 25 | "mediatek,mt6358" for PMIC MT6358 |
| 26 | "mediatek,mt6359" for PMIC MT6359 |
| 27 | "mediatek,mt6366", "mediatek,mt6358" for PMIC MT6366 |
| 28 | "mediatek,mt6397" for PMIC MT6397 |
| 29 | |
| 30 | Optional subnodes: |
| 31 | |
| 32 | - rtc |
| 33 | Required properties: Should be one of follows |
| 34 | - compatible: "mediatek,mt6323-rtc" |
| 35 | - compatible: "mediatek,mt6331-rtc" |
| 36 | - compatible: "mediatek,mt6358-rtc" |
| 37 | - compatible: "mediatek,mt6397-rtc" |
| 38 | For details, see ../rtc/rtc-mt6397.txt |
| 39 | - regulators |
| 40 | Required properties: |
| 41 | - compatible: "mediatek,mt6323-regulator" |
| 42 | see ../regulator/mt6323-regulator.txt |
| 43 | - compatible: "mediatek,mt6358-regulator" |
| 44 | - compatible: "mediatek,mt6366-regulator", "mediatek-mt6358-regulator" |
| 45 | see ../regulator/mt6358-regulator.txt |
| 46 | - compatible: "mediatek,mt6397-regulator" |
| 47 | see ../regulator/mt6397-regulator.txt |
| 48 | - codec |
| 49 | Required properties: |
| 50 | - compatible: "mediatek,mt6397-codec" or "mediatek,mt6358-sound" |
| 51 | - clk |
| 52 | Required properties: |
| 53 | - compatible: "mediatek,mt6397-clk" |
| 54 | - led |
| 55 | Required properties: |
| 56 | - compatible: "mediatek,mt6323-led" |
| 57 | see ../leds/leds-mt6323.txt |
| 58 | |
| 59 | - keys |
| 60 | Required properties: Should be one of the following |
| 61 | - compatible: "mediatek,mt6323-keys" |
| 62 | - compatible: "mediatek,mt6331-keys" |
| 63 | - compatible: "mediatek,mt6397-keys" |
| 64 | see ../input/mtk-pmic-keys.txt |
| 65 | |
| 66 | - power-controller |
| 67 | Required properties: |
| 68 | - compatible: "mediatek,mt6323-pwrc" |
| 69 | For details, see ../power/reset/mt6323-poweroff.txt |
| 70 | |
| 71 | - pin-controller |
| 72 | Required properties: |
| 73 | - compatible: "mediatek,mt6397-pinctrl" |
| 74 | For details, see ../pinctrl/pinctrl-mt65xx.txt |
| 75 | |
| 76 | Example: |
| 77 | pwrap: pwrap@1000f000 { |
| 78 | compatible = "mediatek,mt8135-pwrap"; |
| 79 | |
| 80 | ... |
| 81 | |
| 82 | pmic { |
| 83 | compatible = "mediatek,mt6397"; |
| 84 | |
| 85 | codec: mt6397codec { |
| 86 | compatible = "mediatek,mt6397-codec"; |
| 87 | }; |
| 88 | |
| 89 | regulators { |
| 90 | compatible = "mediatek,mt6397-regulator"; |
| 91 | |
| 92 | mt6397_vpca15_reg: buck_vpca15 { |
| 93 | regulator-compatible = "buck_vpca15"; |
| 94 | regulator-name = "vpca15"; |
| 95 | regulator-min-microvolt = <850000>; |
| 96 | regulator-max-microvolt = <1400000>; |
| 97 | regulator-ramp-delay = <12500>; |
| 98 | regulator-always-on; |
| 99 | }; |
| 100 | |
| 101 | mt6397_vgp4_reg: ldo_vgp4 { |
| 102 | regulator-compatible = "ldo_vgp4"; |
| 103 | regulator-name = "vgp4"; |
| 104 | regulator-min-microvolt = <1200000>; |
| 105 | regulator-max-microvolt = <3300000>; |
| 106 | regulator-enable-ramp-delay = <218>; |
| 107 | }; |
| 108 | }; |
| 109 | }; |
| 110 | }; |