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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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040c3303f1
The reason for changing the patch was that while MT8188 uses the same pwrap as MT8195, the original code was only applicable to 'compatible = "mediatek,mt8188-pwrap"'. To resolve the DTBS check warning that '['mediatek,mt8188-pwrap', 'mediatek,mt8195-pwrap', 'syscon'] is too long', it is necessary to modify the code. Signed-off-by: jason-ch chen <Jason-ch.Chen@mediatek.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20231023083839.24453-4-jason-ch.chen@mediatek.com Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
153 lines
3.7 KiB
YAML
153 lines
3.7 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/soc/mediatek/mediatek,pwrap.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Mediatek PMIC Wrapper
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maintainers:
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- Flora Fu <flora.fu@mediatek.com>
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- Alexandre Mergnat <amergnat@baylibre.com>
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description:
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On MediaTek SoCs the PMIC is connected via SPI. The SPI master interface
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is not directly visible to the CPU, but only through the PMIC wrapper
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inside the SoC. The communication between the SoC and the PMIC can
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optionally be encrypted. Also a non standard Dual IO SPI mode can be
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used to increase speed.
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IP Pairing
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On MT8135 the pins of some SoC internal peripherals can be on the PMIC.
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The signals of these pins are routed over the SPI bus using the pwrap
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bridge. In the binding description below the properties needed for bridging
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are marked with "IP Pairing". These are optional on SoCs which do not support
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IP Pairing
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properties:
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compatible:
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oneOf:
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- items:
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- enum:
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- mediatek,mt2701-pwrap
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- mediatek,mt6765-pwrap
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- mediatek,mt6779-pwrap
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- mediatek,mt6795-pwrap
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- mediatek,mt6797-pwrap
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- mediatek,mt6873-pwrap
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- mediatek,mt7622-pwrap
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- mediatek,mt8135-pwrap
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- mediatek,mt8173-pwrap
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- mediatek,mt8183-pwrap
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- mediatek,mt8186-pwrap
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- mediatek,mt8195-pwrap
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- mediatek,mt8365-pwrap
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- mediatek,mt8516-pwrap
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- items:
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- enum:
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- mediatek,mt8186-pwrap
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- mediatek,mt8195-pwrap
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- const: syscon
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- items:
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- enum:
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- mediatek,mt8188-pwrap
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- const: mediatek,mt8195-pwrap
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- const: syscon
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reg:
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minItems: 1
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items:
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- description: PMIC wrapper registers
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- description: IP pairing registers
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reg-names:
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minItems: 1
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items:
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- const: pwrap
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- const: pwrap-bridge
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interrupts:
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maxItems: 1
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clocks:
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minItems: 2
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items:
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- description: SPI bus clock
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- description: Main module clock
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- description: System module clock
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- description: Timer module clock
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clock-names:
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minItems: 2
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items:
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- const: spi
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- const: wrap
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- const: sys
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- const: tmr
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resets:
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minItems: 1
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items:
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- description: PMIC wrapper reset
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- description: IP pairing reset
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reset-names:
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minItems: 1
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items:
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- const: pwrap
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- const: pwrap-bridge
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pmic:
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type: object
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required:
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- compatible
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- reg
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- reg-names
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- interrupts
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- clocks
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- clock-names
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dependentRequired:
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resets: [reset-names]
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allOf:
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- if:
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properties:
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compatible:
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contains:
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const: mediatek,mt8365-pwrap
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then:
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properties:
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clocks:
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minItems: 4
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clock-names:
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minItems: 4
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/reset/mt8135-resets.h>
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soc {
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#address-cells = <2>;
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#size-cells = <2>;
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pwrap@1000f000 {
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compatible = "mediatek,mt8135-pwrap";
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reg = <0 0x1000f000 0 0x1000>,
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<0 0x11017000 0 0x1000>;
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reg-names = "pwrap", "pwrap-bridge";
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interrupts = <GIC_SPI 128 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&clk26m>, <&clk26m>;
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clock-names = "spi", "wrap";
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resets = <&infracfg MT8135_INFRA_PMIC_WRAP_RST>,
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<&pericfg MT8135_PERI_PWRAP_BRIDGE_SW_RST>;
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reset-names = "pwrap", "pwrap-bridge";
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};
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};
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