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drivers: bbram: Add Microchip MCP7940N driver

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Adds Microchip MCP7940N battery-backed RAM support.

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>
This commit is contained in:
Jamie McCrae 2023-02-24 12:12:43 +00:00 • committed by Carles Cufí
commit f9fd899da0
5 changed files with 256 additions and 2 deletions
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4
dts/bindings/rtc/microchip,mcp7940n.yaml
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@ -1,10 +1,11 @@
#
# Copyright (c) 2021 Laird Connectivity
# Copyright (c) 2023 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: Apache-2.0
#
description: Microchip MCP7940N I2C RTC
description: Microchip MCP7940N I2C RTC with battery-backed SRAM
compatible: "microchip,mcp7940n"
@ -17,7 +18,6 @@ properties:
int-gpios:
type: phandle-array
description: |
Host input connected to the MCP7940N MFP open drain output pin
Notifies when an alarm has triggered by asserting this line.