On Wed 15 Jul 2020 at 18:02, Anand Moon <linux.amoon@xxxxxxxxx> wrote:
> Enable RTC PCF8563 node on Odroid-N2 SBC, In order
> to support the RTC wakealarm feature for suspend and resume.
>
> Cc: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
> Cc: Kevin Hilman <khilman@xxxxxxxxxxxx>
> Signed-off-by: Anand Moon <linux.amoon@xxxxxxxxx>
> ---
> $ sudo hwclock -r && date
> 2020-07-15 13:11:53.862508+00:00
> Wed Jul 15 13:11:54 UTC 2020
>
> $ hwclock --show
> 2020-07-15 13:17:30.903300+00:00
>
> But RTC wake up is not working at my end.
> Any inputs are welcome.
>
> $ time rtcwake -s 30 -m mem
> rtcwake: /dev/rtc0 not enabled for wakeup events
>
> real 0m0.002s
> user 0m0.002s
> sys 0m0.000s
> ---
> .../boot/dts/amlogic/meson-g12b-odroid-n2.dts | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts
> index 169ea283d4ee..a447cba4dd53 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts
> +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts
> @@ -391,6 +391,20 @@ hdmi_tx_tmds_out: endpoint {
> };
> };
>
> +&i2c3 {
> + pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>;
> + pinctrl-names = "default";
> + status = "okay";
> +
> + rtc: rtc@51 {
> + reg = <0x51>;
> + compatible = "nxp,pcf8563";
> + #clock-cells = <0>;
> + clock-frequency = <32768>;
> + clock-output-names = "rtc_clkout";
> + };
This rtc being on a connector, optional and not fitted by default,
should it really be enabled for all odroid-n2 ?
We tend not do that usually
> +};
> +
> &ir {
> status = "okay";
> pinctrl-0 = <&remote_input_ao_pins>;
