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| author |   Christian Hewitt <christianshewitt@gmail.com> | 2020-11-16 06:41:47 +0000 |
|---|---|---|
| committer |   Kevin Hilman <khilman@baylibre.com> | 2020-11-30 15:54:24 -0800 |
| commit | 287eb2be4037c3d8d96b5d9490fa0e695e4553b9 (patch) | |
| tree | dfc454fcdd7e90e9dd0576b1d6a64a09e217313a | |
| parent | Merge tag 'clk-meson-v5.11-headers-1' of git://github.com/BayLibre/clk-meson into v5.11/dt64-deps (diff) | |
| download | linux-dev-287eb2be4037c3d8d96b5d9490fa0e695e4553b9.tar.xz linux-dev-287eb2be4037c3d8d96b5d9490fa0e695e4553b9.zip | |
arm64: dts: meson: enable rtc node on Khadas VIM1/VIM2 boards
Enable the rtc node on VIM1/VIM2 boards so users can simply attach a power
cell and use the on-board RTC without modifying the device-tree.
Cold boot with no cell attached is gracefully handled:
VIM2:~ # dmesg | grep rtc
[ 7.716150] rtc-hym8563 1-0051: no valid clock/calendar values available
[ 7.716957] rtc-hym8563 1-0051: registered as rtc0
[ 7.729850] rtc-hym8563 1-0051: no valid clock/calendar values available
[ 7.729877] rtc-hym8563 1-0051: hctosys: unable to read the hardware clock
[ 8.126768] rtc-hym8563 1-0051: no valid clock/calendar values available
Warm boot (and any boot with cell attached) recalls stored values resulting
in consistently faster (re)boot times:
VIM2:~ # dmesg | grep rtc
[ 7.441671] rtc-hym8563 1-0051: registered as rtc0
[ 7.442663] rtc-hym8563 1-0051: setting system clock to 2020-11-16T05:49:59 UTC (1605505799)
Suggested-by: Artem Lapkin <art@khadas.com>
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/20201116064147.12062-1-christianshewitt@gmail.com
| -rw-r--r-- | arch/arm64/boot/dts/amlogic/meson-gxl-s905x-khadas-vim.dts | 3 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts | 3 |
2 files changed, 2 insertions, 4 deletions
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-khadas-vim.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-khadas-vim.dts index 8bcdffdf55d0..638a5992d760 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-khadas-vim.dts +++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-khadas-vim.dts @@ -97,8 +97,7 @@ pinctrl-names = "default"; rtc: rtc@51 { - /* has to be enabled manually when a battery is connected: */ - status = "disabled"; + status = "okay"; compatible = "haoyu,hym8563"; reg = <0x51>; #clock-cells = <0>; diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts index bff8ec2c1c70..da000c10b945 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts +++ b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts @@ -228,8 +228,7 @@ pinctrl-names = "default"; rtc: rtc@51 { - /* has to be enabled manually when a battery is connected: */ - status = "disabled"; + status = "okay"; compatible = "haoyu,hym8563"; reg = <0x51>; #clock-cells = <0>; |