On 13-03-29 12:03 PM, Johan Hovold wrote:
Add support for the at91sam9x5-family which must use the shadow
interrupt mask due to a hardware issue.
---
drivers/rtc/rtc-at91rm9200.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c
index 2921866..f3e351f 100644
--- a/drivers/rtc/rtc-at91rm9200.c
+++ b/drivers/rtc/rtc-at91rm9200.c
@@ -318,12 +318,20 @@ static irqreturn_t at91_rtc_interrupt(int irq, void
*dev_id)
static const struct at91_rtc_config at91rm9200_config = {
};
+static const struct at91_rtc_config at91sam9x5_config = {
+ .use_shadow_imr = true,
+};
+
#if defined(CONFIG_OF)
static const struct of_device_id at91_rtc_dt_ids[] = {
{
.compatible = "atmel,at91rm9200-rtc",
.data = &at91rm9200_config,
},
+ {
+ .compatible = "atmel,at91sam9x5-rtc",
+ .data = &at91sam9x5_config,
+ },
/* terminator */
}
};
Johan,
Looks good.
Plus add something like this to at91sam9x5.dtsi after the
i2c@2 entry (at the end):
rtc {
compatible = "atmel,at91sam9x5-rtc";
reg = <0xfffffeb0 0x40>;
interrupts = <1 4 7>;
status = "disabled";
};
and an "enabler" in ariag25.dts (and perhaps other members
of the 9x5 sub-family), also at the end:
rtc {
status = "okay";
};
My patches are in Robert Nelson's tree at:
http://www.eewiki.net/display/linuxonarm/AT91SAM9x5
in the Linux kernel section. My RTC code amounts to the same
thing as you are proposing, without the safety code around
the IMR shadow.
I provide binaries based on that work to Aria G25 users
via a google group. No-one has complained about RTC not
working. SPI and I2C problems are on-going but gradually
being sorted. Hence I know people are using and testing
this code, other than me.
Doug Gilbert
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