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Commit 78aaa06d authored by Alexandre Belloni's avatar Alexandre Belloni
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rtc: ds1307: add Intersil ISL12057 support



Intersil ISL12057 is a drop-in replacement for DS1337. It can be supported
by the ds1307 driver.

Acked-by: default avatarArnaud Ebalard <arno@natisbad.org>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
parent 50d6c0ea
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+4 −4
Original line number Diff line number Diff line
@@ -208,14 +208,14 @@ config RTC_DRV_AS3722
	  will be called rtc-as3722.

config RTC_DRV_DS1307
	tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
	tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025, ISL12057"
	help
	  If you say yes here you get support for various compatible RTC
	  chips (often with battery backup) connected with I2C. This driver
	  should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
	  EPSON RX-8025 and probably other chips. In some cases the RTC
	  must already have been initialized (by manufacturing or a
	  bootloader).
	  EPSON RX-8025, Intersil ISL12057 and probably other chips. In some
	  cases the RTC must already have been initialized (by manufacturing or
	  a bootloader).

	  The first seven registers on these chips hold an RTC, and other
	  registers may add features such as NVRAM, a trickle charger for
+6 −0
Original line number Diff line number Diff line
@@ -186,6 +186,7 @@ static const struct i2c_device_id ds1307_id[] = {
	{ "mcp7941x", mcp794xx },
	{ "pt7c4338", ds_1307 },
	{ "rx8025", rx_8025 },
	{ "isl12057", ds_1337 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, ds1307_id);
@@ -1333,6 +1334,11 @@ static int ds1307_probe(struct i2c_client *client,
	if (of_property_read_bool(client->dev.of_node, "wakeup-source")) {
		ds1307_can_wakeup_device = true;
	}
	/* Intersil ISL12057 DT backward compatibility */
	if (of_property_read_bool(client->dev.of_node,
				  "isil,irq2-can-wakeup-machine")) {
		ds1307_can_wakeup_device = true;
	}
#endif

	switch (ds1307->type) {