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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/soc/mediatek/mediatek,pwrap.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Mediatek PMIC Wrapper
maintainers:
- Flora Fu <flora.fu@mediatek.com>
- Alexandre Mergnat <amergnat@baylibre.com>
description:
On MediaTek SoCs the PMIC is connected via SPI. The SPI master interface
is not directly visible to the CPU, but only through the PMIC wrapper
inside the SoC. The communication between the SoC and the PMIC can
optionally be encrypted. Also a non standard Dual IO SPI mode can be
used to increase speed.
IP Pairing
On MT8135 the pins of some SoC internal peripherals can be on the PMIC.
The signals of these pins are routed over the SPI bus using the pwrap
bridge. In the binding description below the properties needed for bridging
are marked with "IP Pairing". These are optional on SoCs which do not support
IP Pairing
properties:
compatible:
oneOf:
- items:
- enum:
- mediatek,mt2701-pwrap
- mediatek,mt6765-pwrap
- mediatek,mt6779-pwrap
- mediatek,mt6795-pwrap
- mediatek,mt6797-pwrap
- mediatek,mt6873-pwrap
- mediatek,mt7622-pwrap
- mediatek,mt8135-pwrap
- mediatek,mt8173-pwrap
- mediatek,mt8183-pwrap
- mediatek,mt8186-pwrap
- mediatek,mt8195-pwrap
- mediatek,mt8365-pwrap
- mediatek,mt8516-pwrap
- items:
- enum:
- mediatek,mt8186-pwrap
- mediatek,mt8195-pwrap
- const: syscon
- items:
- enum:
- mediatek,mt8188-pwrap
- const: mediatek,mt8195-pwrap
- const: syscon
reg:
minItems: 1
items:
- description: PMIC wrapper registers
- description: IP pairing registers
reg-names:
minItems: 1
items:
- const: pwrap
- const: pwrap-bridge
interrupts:
maxItems: 1
clocks:
minItems: 2
items:
- description: SPI bus clock
- description: Main module clock
- description: System module clock
- description: Timer module clock
clock-names:
minItems: 2
items:
- const: spi
- const: wrap
- const: sys
- const: tmr
resets:
minItems: 1
items:
- description: PMIC wrapper reset
- description: IP pairing reset
reset-names:
minItems: 1
items:
- const: pwrap
- const: pwrap-bridge
pmic:
type: object
required:
- compatible
- reg
- reg-names
- interrupts
- clocks
- clock-names
dependentRequired:
resets: [reset-names]
allOf:
- if:
properties:
compatible:
contains:
const: mediatek,mt8365-pwrap
then:
properties:
clocks:
minItems: 4
clock-names:
minItems: 4
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/reset/mt8135-resets.h>
soc {
#address-cells = <2>;
#size-cells = <2>;
pwrap@1000f000 {
compatible = "mediatek,mt8135-pwrap";
reg = <0 0x1000f000 0 0x1000>,
<0 0x11017000 0 0x1000>;
reg-names = "pwrap", "pwrap-bridge";
interrupts = <GIC_SPI 128 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clk26m>, <&clk26m>;
clock-names = "spi", "wrap";
resets = <&infracfg MT8135_INFRA_PMIC_WRAP_RST>,
<&pericfg MT8135_PERI_PWRAP_BRIDGE_SW_RST>;
reset-names = "pwrap", "pwrap-bridge";
};
};
|
