EPSON RTC-8583 support code on i2c bus
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Authored by yamori813_yahoo.co.jp on Oct 30 2017, 8:28 AM.

Details

Reviewers

• ian
mizhka
adrian
gonzo
loos

Commits

rS331503: MFC r325233, r328956, r329170, r329172-r329173, r329224, r330403-r330407,
rS325233: [i2c/clock] add support for EPSON RTC-8583

Summary

This is start up log.

https://gist.github.com/yamori813/bd6ccdbd73dd02eebfdd0bd6d92411d8

Test Plan

on RT2880 (Planex_MZK-W300NAG)

Diff Detail

Repository

rS FreeBSD src repository - subversion

Lint

Lint Not Applicable

Unit

Tests Not Applicable

Event Timeline

yamori813_yahoo.co.jp created this revision.Oct 30 2017, 8:28 AM

This is dts

&i2c {
        status = "okay";
        rtc8583 {
                status = "okay";
                compatible = "epson,rtc8583";
                reg = <0x50>;
        };
};

Few cosmetic style issues...

sys/dev/iicbus/rtc8583.c
183–200 ↗	(On Diff #34449)	I see datasheet for this clock, but can't understand this algo :) ftp://download.epson-europe.com/pub/electronics-de/quartz/rtc8583.pdf is 0x10 register number mentioned in datasheet? Does it mean that year is stored in user S-RAM and don't describe in datasheet?