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| author | Martin Blumenstingl <martin.blumenstingl@googlemail.com> | 2019-04-13 18:34:23 +0200 |
|---|---|---|
| committer | Kevin Hilman <khilman@baylibre.com> | 2019-04-16 11:58:00 -0700 |
| commit | 09ee951617d9af8a86d228b2ed34035076ab6001 (patch) | |
| tree | 2d10acbb3c2bc3e5c9239470e37acca9c45e6706 /arch/arm/boot/dts/meson8b-odroidc1.dts | |
| parent | 6ffdc4738c5a8856afc46da92453fe7c086f1eaa (diff) | |
| download | lwn-09ee951617d9af8a86d228b2ed34035076ab6001.tar.gz lwn-09ee951617d9af8a86d228b2ed34035076ab6001.zip | |
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>
Diffstat (limited to 'arch/arm/boot/dts/meson8b-odroidc1.dts')
| -rw-r--r-- | arch/arm/boot/dts/meson8b-odroidc1.dts | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts index 0157646e3a89..f3ad9397f670 100644 --- a/arch/arm/boot/dts/meson8b-odroidc1.dts +++ b/arch/arm/boot/dts/meson8b-odroidc1.dts @@ -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>; |