Thread (22 messages) 22 messages, 5 authors, 2017-02-06

[PATCH v5 7/7] ARM: dts: sun9i: Switch to the AC100 RTC clock outputs for osc32k

From: Maxime Ripard <hidden>
Date: 2016-07-11 06:50:46
Also in: linux-devicetree, linux-rtc, lkml

Hi,

On Fri, Jul 08, 2016 at 10:33:42PM +0800, Chen-Yu Tsai wrote:
quoted hunk ↗ jump to hunk
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 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            | 9 +++------
 3 files changed, 13 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>;
+};
+
I'm guessing that an unresolved dependency when the driver has not
loaded yet, or is not even compiled ?

How is it working then?

Thanks,
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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