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ARM: dts: meson8b: odroid-c1: prepare support for the RTC 

The Odroid-C1 has the 32.768 kHz oscillator (X3 in the schematics) which
is required for the RTC. A battery can be connected separately (to the
BT1 header) - then the "rtc" node can be enabled manually. By default
the RTC is disabled because the boards typically come without the RTC
battery.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
This commit is contained in:
Martin Blumenstingl 2019-04-13 18:34:23 +02:00 committed by Kevin Hilman
parent 6ffdc4738c
commit 09ee951617
1 changed files with 14 additions and 0 deletions
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14
arch/arm/boot/dts/meson8b-odroidc1.dts
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@ -124,6 +124,14 @@
io-channels = <&saradc 8>;
};
rtc32k_xtal: rtc32k-xtal-clk {
/* X3 in the schematics */
compatible = "fixed-clock";
clock-frequency = <32768>;
clock-output-names = "RTC32K";
#clock-cells = <0>;
};
vcc_1v8: regulator-vcc-1v8 {
/*
* RICHTEK RT9179 configured for a fixed output voltage of
@ -345,6 +353,12 @@
clock-names = "clkin0";
};
&rtc {
/* needs to be enabled manually when a battery is connected */
clocks = <&rtc32k_xtal>;
vdd-supply = <&vdd_rtc>;
};
&uart_AO {
status = "okay";
pinctrl-0 = <&uart_ao_a_pins>;