From f6eb973db22ab5636cfcdabe171d4b753525de4e Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 13 Apr 2019 18:34:21 +0200 Subject: [PATCH] ARM: dts: meson: add support for the RTC The 32-bit Meson SoCs have an RTC block in the AO (always on) area. The RTC requires an external 32.768 kHz oscillator to work properly. Whether or not this crystal exists depends on the board, so it has to be added for each board.dts (instead of adding it somewhere in a generic .dtsi). Signed-off-by: Martin Blumenstingl Signed-off-by: Kevin Hilman --- arch/arm/boot/dts/meson.dtsi | 9 +++++++++ arch/arm/boot/dts/meson8.dtsi | 5 +++++ arch/arm/boot/dts/meson8b.dtsi | 5 +++++ 3 files changed, 19 insertions(+) diff --git a/arch/arm/boot/dts/meson.dtsi b/arch/arm/boot/dts/meson.dtsi index 6f54a8897574d..8841783aceec9 100644 --- a/arch/arm/boot/dts/meson.dtsi +++ b/arch/arm/boot/dts/meson.dtsi @@ -252,6 +252,15 @@ #size-cells = <0>; status = "disabled"; }; + + rtc: rtc@740 { + compatible = "amlogic,meson6-rtc"; + reg = <0x740 0x14>; + interrupts = ; + #address-cells = <1>; + #size-cells = <1>; + status = "disabled"; + }; }; usb0: usb@c9040000 { diff --git a/arch/arm/boot/dts/meson8.dtsi b/arch/arm/boot/dts/meson8.dtsi index d2ec4af82cc56..7ef442462ea47 100644 --- a/arch/arm/boot/dts/meson8.dtsi +++ b/arch/arm/boot/dts/meson8.dtsi @@ -541,6 +541,11 @@ compatible = "amlogic,meson8-pwm", "amlogic,meson8b-pwm"; }; +&rtc { + compatible = "amlogic,meson8-rtc"; + resets = <&reset RESET_RTC>; +}; + &saradc { compatible = "amlogic,meson8-saradc", "amlogic,meson-saradc"; clocks = <&clkc CLKID_XTAL>, diff --git a/arch/arm/boot/dts/meson8b.dtsi b/arch/arm/boot/dts/meson8b.dtsi index df42e48f1cc16..800cd65fc50a4 100644 --- a/arch/arm/boot/dts/meson8b.dtsi +++ b/arch/arm/boot/dts/meson8b.dtsi @@ -510,6 +510,11 @@ compatible = "amlogic,meson8b-pwm"; }; +&rtc { + compatible = "amlogic,meson8b-rtc"; + resets = <&reset RESET_RTC>; +}; + &saradc { compatible = "amlogic,meson8b-saradc", "amlogic,meson-saradc"; clocks = <&clkc CLKID_XTAL>, -- 2.39.5