From 34996e42f82bfd60bc2c191e5cae3c6ab233ec6c Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 7 Aug 2024 15:11:27 +0200
Subject: Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../bindings/mfd/atmel,sama5d2-flexcom.yaml        | 99 ++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml

(limited to 'Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml')

diff --git a/Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml b/Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml
new file mode 100644
index 0000000000..0dc6a40b63
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml
@@ -0,0 +1,99 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/atmel,sama5d2-flexcom.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip Flexcom (Flexible Serial Communication Unit)
+
+maintainers:
+  - Kavyasree Kotagiri <kavyasree.kotagiri@microchip.com>
+
+description:
+  The Microchip Flexcom is just a wrapper which embeds a SPI controller,
+  an I2C controller and an USART. Only one function can be used at a
+  time and is chosen at boot time according to the device tree.
+
+properties:
+  compatible:
+    oneOf:
+      - const: atmel,sama5d2-flexcom
+      - items:
+          - const: microchip,sam9x7-flexcom
+          - const: atmel,sama5d2-flexcom
+      - items:
+          - const: microchip,sama7g5-flexcom
+          - const: atmel,sama5d2-flexcom
+
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  ranges:
+    description:
+      One range for the full I/O register region. (including USART,
+      TWI and SPI registers).
+    items:
+      maxItems: 3
+
+  atmel,flexcom-mode:
+    description: |
+      Specifies the flexcom mode as follows:
+      1: USART
+      2: SPI
+      3: I2C.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [1, 2, 3]
+
+patternProperties:
+  "^serial@[0-9a-f]+$":
+    type: object
+    description:
+      Child node describing USART. See atmel-usart.txt for details
+      of USART bindings.
+
+  "^spi@[0-9a-f]+$":
+    type: object
+    description:
+      Child node describing SPI. See ../spi/spi_atmel.txt for details
+      of SPI bindings.
+
+  "^i2c@[0-9a-f]+$":
+    $ref: /schemas/i2c/atmel,at91sam-i2c.yaml
+    description:
+      Child node describing I2C.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - "#address-cells"
+  - "#size-cells"
+  - ranges
+  - atmel,flexcom-mode
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    flx0: flexcom@f8034000 {
+        compatible = "atmel,sama5d2-flexcom";
+        reg = <0xf8034000 0x200>;
+        clocks = <&flx0_clk>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges = <0x0 0xf8034000 0x800>;
+        atmel,flexcom-mode = <2>;
+    };
+...
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