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rtc: add support for EPSON TOYOCOM RTC-7301SF/DG

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This adds support for EPSON TOYOCOM RTC-7301SF/DG which has parallel
interface compatible with SRAM.

This driver supports basic clock, calendar and alarm functionality.

Tested with Microblaze linux running on Artix7 FPGA board with my own
custom IP for RTC-7301.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This commit is contained in:
Akinobu Mita
2016-12-04 23:04:39 +09:00
committed by Alexandre Belloni
parent 9c19b8930d
commit 0b6a8f5c9b
4 changed files with 481 additions and 0 deletions
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16
Documentation/devicetree/bindings/rtc/epson,rtc7301.txt Normal file
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EPSON TOYOCOM RTC-7301SF/DG
Required properties:
- compatible: Should be "epson,rtc7301sf" or "epson,rtc7301dg"
- reg: Specifies base physical address and size of the registers.
- interrupts: A single interrupt specifier.
Example:
rtc: rtc@44a00000 {
compatible = "epson,rtc7301dg";
reg = <0x44a00000 0x10000>;
interrupt-parent = <&axi_intc_0>;
interrupts = <3 2>;
};