diff options
| author | Paul Cercueil <paul@crapouillou.net> | 2020-03-11 19:23:16 +0100 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2020-03-24 11:03:22 +0100 |
| commit | 5840748520be19ea97ffdb80e5aa313c6ef60575 (patch) | |
| tree | 305ff8fa158b483001cf8d8ea094495106bb4af0 /drivers/rtc/rtc-jz4740.c | |
| parent | f9b2a4d6a5f18e0aaf715206a056565c56889d9f (diff) | |
| download | linux-5840748520be19ea97ffdb80e5aa313c6ef60575.tar.gz | |
rtc: jz4740: Add support for JZ4760 SoC
The WENR feature (set a magic value to enable RTC registers read-write)
first appeared on the JZ4760; the JZ4780 came much later.
Since it would be dangerous to specify a newer SoC's compatible string as
the fallback of an older SoC's compatible string, we add support for the
"ingenic,jz4760-rtc" compatible string in the driver.
This will permit to support the JZ4770 by having:
compatible = "ingenic,jz4770-rtc", "ingenic,jz4760-rtc";
Instead of doing:
compatible = "ingenic,jz4770-rtc", "ingenic,jz4780-rtc";
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200311182318.22154-1-paul@crapouillou.net
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc/rtc-jz4740.c')
| -rw-r--r-- | drivers/rtc/rtc-jz4740.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/rtc/rtc-jz4740.c b/drivers/rtc/rtc-jz4740.c index 18023e472cbc5..d764cd525c9a1 100644 --- a/drivers/rtc/rtc-jz4740.c +++ b/drivers/rtc/rtc-jz4740.c @@ -46,6 +46,7 @@ enum jz4740_rtc_type { ID_JZ4740, + ID_JZ4760, ID_JZ4780, }; @@ -106,7 +107,7 @@ static inline int jz4740_rtc_reg_write(struct jz4740_rtc *rtc, size_t reg, { int ret = 0; - if (rtc->type >= ID_JZ4780) + if (rtc->type >= ID_JZ4760) ret = jz4780_rtc_enable_write(rtc); if (ret == 0) ret = jz4740_rtc_wait_write_ready(rtc); @@ -298,6 +299,7 @@ static void jz4740_rtc_power_off(void) static const struct of_device_id jz4740_rtc_of_match[] = { { .compatible = "ingenic,jz4740-rtc", .data = (void *)ID_JZ4740 }, + { .compatible = "ingenic,jz4760-rtc", .data = (void *)ID_JZ4760 }, { .compatible = "ingenic,jz4780-rtc", .data = (void *)ID_JZ4780 }, {}, }; |