arm64: dts: meson: remove clock-frequency from rtc

'clock-frequency' is not part of the DT binding and not supported by the
Linux driver.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20221024165549.74574-6-sebastian.reichel@collabora.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>

arm64: dts: amlogic: correct gpio-keys properties

gpio-keys children do not use unit addresses.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20220609113911.380368-6-krzysztof.kozlowski@linaro.org

arm64: dts: amlogic: misc DT schema fixups

Take a pass at cleaning up a bunch of warnings
from 'make dtbs_check' that have crept in.

Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210421204833.18523-1-khilman@baylibre.com'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arm64: dts: meson: add initial device-tree for Minix NEO U9-H

Minix NEO U9-H is based on the Amlogic Q200 reference board with an
S912-H chip and the following specs:

- 2GB DDR3 RAM
- 16GB eMMC
- 10/100/1000 Base-T Ethernet
- AP6356S Wireless (802.11 a/b/g/n/ac, BT 4.1)
- RTC chip
- HDMI 2.1 video
- S/PDIF optical output
- ES8323 audio codec
- Analogue headphone output
- 3x USB 2.0 ports (1x OTG)
- IR receiver
- 1x Power LED (white)
- 1x Power button (rear)
- 1x Update/Reset button (underside)
- 1x micro SD card slot

Tested-by: Wes Bradley <komplex@live.ie>
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20210201210508.1528-2-christianshewitt@gmail.com