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dt-bindings: mfd: syscon: atmel,sama5d2-secumod: Convert to yaml

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Convert Microchip AT91 secumod to YAML format.

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/a999a719a652ec834f1176d69a3e9b207cbd63e6.1744666011.git.Ryan.Wanner@microchip.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Ryan Wanner
2025-04-14 14:41:24 -07:00
committed by Lee Jones
parent 9c998b9d31
commit f7c636be96
2 changed files with 48 additions and 25 deletions
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48
Documentation/devicetree/bindings/arm/atmel,sama5d2-secumod.yaml Normal file
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@@ -0,0 +1,48 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/atmel,sama5d2-secumod.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Microchip AT91 Security Module (SECUMOD)
maintainers:
- Nicolas Ferre <nicolas.ferre@microchip.com>
description:
The Security Module also offers the PIOBU pins which can be used as GPIO pins.
Note that they maintain their voltage during Backup/Self-refresh.
properties:
compatible:
oneOf:
- items:
- const: atmel,sama5d2-secumod
- const: syscon
- items:
- enum:
- microchip,sama7g5-secumod
- const: atmel,sama5d2-secumod
- const: syscon
reg:
maxItems: 1
gpio-controller: true
"#gpio-cells":
const: 2
required:
- compatible
- reg
unevaluatedProperties: false
examples:
- |
security-module@fc040000 {
compatible = "atmel,sama5d2-secumod", "syscon";
reg = <0xfc040000 0x100>;
gpio-controller;
#gpio-cells = <2>;
};

25
Documentation/devicetree/bindings/arm/atmel-sysregs.txt
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@@ -46,28 +46,3 @@ Examples:
reg = <0xffffe800 0x200>;
};
Security Module (SECUMOD)
The Security Module macrocell provides all necessary secure functions to avoid
voltage, temperature, frequency and mechanical attacks on the chip. It also
embeds secure memories that can be scrambled.
The Security Module also offers the PIOBU pins which can be used as GPIO pins.
Note that they maintain their voltage during Backup/Self-refresh.
required properties:
- compatible: Should be "atmel,<chip>-secumod", "syscon".
<chip> can be "sama5d2".
- reg: Should contain registers location and length
- gpio-controller: Marks the port as GPIO controller.
- #gpio-cells: There are 2. The pin number is the
first, the second represents additional
parameters such as GPIO_ACTIVE_HIGH/LOW.
secumod@fc040000 {
compatible = "atmel,sama5d2-secumod", "syscon";
reg = <0xfc040000 0x100>;
gpio-controller;
#gpio-cells = <2>;
};