7e47943c33
The MT6331 PMIC provides many sub modules: regulators, audio codec, LED controller, keys, RTC and some GPIOs. It is always paired with a MT6332 Companion PMIC, which provides thermistors, WLEDs (display LED backlight), secondary AP cluster regulators, modem clocks, battery charger and fuel gauge. Add the necessary compatibles to start implementing the basics. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20220617110728.90132-2-angelogioacchino.delregno@collabora.com
108 lines
2.7 KiB
Plaintext
108 lines
2.7 KiB
Plaintext
MediaTek MT6397/MT6323 Multifunction Device Driver
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MT6397/MT6323 is a multifunction device with the following sub modules:
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- Regulator
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- RTC
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- Audio codec
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- GPIO
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- Clock
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- LED
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- Keys
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- Power controller
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It is interfaced to host controller using SPI interface by a proprietary hardware
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called PMIC wrapper or pwrap. MT6397/MT6323 MFD is a child device of pwrap.
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See the following for pwarp node definitions:
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../soc/mediatek/pwrap.txt
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This document describes the binding for MFD device and its sub module.
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Required properties:
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compatible:
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"mediatek,mt6323" for PMIC MT6323
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"mediatek,mt6331" for PMIC MT6331 and MT6332
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"mediatek,mt6358" for PMIC MT6358 and MT6366
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"mediatek,mt6359" for PMIC MT6359
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"mediatek,mt6397" for PMIC MT6397
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Optional subnodes:
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- rtc
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Required properties: Should be one of follows
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- compatible: "mediatek,mt6323-rtc"
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- compatible: "mediatek,mt6331-rtc"
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- compatible: "mediatek,mt6358-rtc"
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- compatible: "mediatek,mt6397-rtc"
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For details, see ../rtc/rtc-mt6397.txt
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- regulators
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Required properties:
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- compatible: "mediatek,mt6323-regulator"
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see ../regulator/mt6323-regulator.txt
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- compatible: "mediatek,mt6358-regulator"
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see ../regulator/mt6358-regulator.txt
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- compatible: "mediatek,mt6397-regulator"
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see ../regulator/mt6397-regulator.txt
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- codec
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Required properties:
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- compatible: "mediatek,mt6397-codec" or "mediatek,mt6358-sound"
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- clk
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Required properties:
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- compatible: "mediatek,mt6397-clk"
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- led
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Required properties:
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- compatible: "mediatek,mt6323-led"
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see ../leds/leds-mt6323.txt
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- keys
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Required properties: Should be one of the following
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- compatible: "mediatek,mt6323-keys"
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- compatible: "mediatek,mt6331-keys"
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- compatible: "mediatek,mt6397-keys"
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see ../input/mtk-pmic-keys.txt
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- power-controller
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Required properties:
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- compatible: "mediatek,mt6323-pwrc"
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For details, see ../power/reset/mt6323-poweroff.txt
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- pin-controller
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Required properties:
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- compatible: "mediatek,mt6397-pinctrl"
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For details, see ../pinctrl/pinctrl-mt65xx.txt
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Example:
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pwrap: pwrap@1000f000 {
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compatible = "mediatek,mt8135-pwrap";
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...
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pmic {
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compatible = "mediatek,mt6397";
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codec: mt6397codec {
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compatible = "mediatek,mt6397-codec";
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};
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regulators {
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compatible = "mediatek,mt6397-regulator";
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mt6397_vpca15_reg: buck_vpca15 {
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regulator-compatible = "buck_vpca15";
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regulator-name = "vpca15";
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regulator-min-microvolt = <850000>;
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regulator-max-microvolt = <1400000>;
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regulator-ramp-delay = <12500>;
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regulator-always-on;
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};
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mt6397_vgp4_reg: ldo_vgp4 {
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regulator-compatible = "ldo_vgp4";
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regulator-name = "vgp4";
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regulator-min-microvolt = <1200000>;
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regulator-max-microvolt = <3300000>;
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regulator-enable-ramp-delay = <218>;
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};
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};
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};
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};
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