[PATCH v6 4/4] ARM: dts: sun9i: Switch to the AC100 RTC clock outputs for osc32k
From: Chen-Yu Tsai <hidden>
Date: 2016-08-19 08:39:11
Also in:
linux-arm-kernel, linux-rtc, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
The 32.768 kHz clock inside the A80 SoC is fed from an external source,
typically the AC100 RTC module.
Make the osc32k placeholder a fixed-factor clock so board dts files can
specify its source.
Signed-off-by: Chen-Yu Tsai <redacted>
---
Changes since v5:
- Added "clk-div" and "clk-mult" fixed-factor-clock properties to osc32k
placeholder.
Changes since v4: none
Changes since v3: none
Changes since v2: none
Changes since v1: none
---
arch/arm/boot/dts/sun9i-a80-cubieboard4.dts | 5 +++++
arch/arm/boot/dts/sun9i-a80-optimus.dts | 5 +++++
arch/arm/boot/dts/sun9i-a80.dtsi | 11 +++++------
3 files changed, 15 insertions(+), 6 deletions(-)
diff --git a/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts b/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts
index cf2f4b72a841..04b014603659 100644
--- a/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts
+++ b/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts@@ -103,6 +103,11 @@ allwinner,drive = <SUN4I_PINCTRL_40_MA>; }; +&osc32k { + /* osc32k input is from AC100 */ + clocks = <&ac100_rtc 0>; +}; + &pio { led_pins_cubieboard4: led-pins@0 { allwinner,pins = "PH6", "PH17";
diff --git a/arch/arm/boot/dts/sun9i-a80-optimus.dts b/arch/arm/boot/dts/sun9i-a80-optimus.dts
index e35c06c162a7..fd874ded890e 100644
--- a/arch/arm/boot/dts/sun9i-a80-optimus.dts
+++ b/arch/arm/boot/dts/sun9i-a80-optimus.dts@@ -152,6 +152,11 @@ status = "okay"; }; +&osc32k { + /* osc32k input is from AC100 */ + clocks = <&ac100_rtc 0>; +}; + &pio { led_pins_optimus: led-pins@0 { allwinner,pins = "PH0", "PH1";
diff --git a/arch/arm/boot/dts/sun9i-a80.dtsi b/arch/arm/boot/dts/sun9i-a80.dtsi
index f68b3242b33a..24e3cac4f571 100644
--- a/arch/arm/boot/dts/sun9i-a80.dtsi
+++ b/arch/arm/boot/dts/sun9i-a80.dtsi@@ -148,15 +148,14 @@ /* * The 32k clock is from an external source, normally the - * AC100 codec/RTC chip. This clock is by default enabled - * and clocked at 32768 Hz, from the oscillator connected - * to the AC100. It is configurable, but no such driver or - * bindings exist yet. + * AC100 codec/RTC chip. This serves as a placeholder for + * board dts files to specify the source. */ osc32k: osc32k_clk { #clock-cells = <0>; - compatible = "fixed-clock"; - clock-frequency = <32768>; + compatible = "fixed-factor-clock"; + clock-div = <1>; + clock-mult = <1>; clock-output-names = "osc32k"; };
--
2.9.3
--
You received this message because you are subscribed to "rtc-linux".
Membership options at http://groups.google.com/group/rtc-linux .
Please read http://groups.google.com/group/rtc-linux/web/checklist
before submitting a driver.
---
You received this message because you are subscribed to the Google Groups "rtc-linux" group.
To unsubscribe from this group and stop receiving emails from it, send an email to rtc-linux+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
For more options, visit https://groups.google.com/d/optout.