[PATCH v2] ARM: dts: sun6i: hummingbird: Add aliases for rtc devices

[PATCH v2] ARM: dts: sun6i: hummingbird: Add aliases for rtc devices

[Chen-Yu Tsai]

The hummingbird A31 has 2 rtc devices available: one in the SoC,
and a pcf8563 external rtc on i2c2.

For some unknown reason, the onboard backup battery alone can not
supply enough power to the internal rtc. When external power is
removed, the internal rtc would reset. Hence we want to use the
external one by default.

Add aliases for the rtc devices with the external one as rtc0.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---

Changes since v1:

  - Cleared up commit message

---
 arch/arm/boot/dts/sun6i-a31-hummingbird.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/sun6i-a31-hummingbird.dts b/arch/arm/boot/dts/sun6i-a31-hummingbird.dts
index 06d9391ca30e..358781113582 100644
--- a/arch/arm/boot/dts/sun6i-a31-hummingbird.dts
+++ b/arch/arm/boot/dts/sun6i-a31-hummingbird.dts
@@ -55,6 +55,8 @@
 
 	aliases {
 		serial0 = &uart0;
+		rtc0 = &pcf8563;
+		rtc1 = &rtc;
 	};
 
 	chosen {
-- 
2.5.3

Re: [PATCH v2] ARM: dts: sun6i: hummingbird: Add aliases for rtc devices

[Maxime Ripard]

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On Thu, Oct 01, 2015 at 08:48:29PM +0800, Chen-Yu Tsai wrote:
> The hummingbird A31 has 2 rtc devices available: one in the SoC,
> and a pcf8563 external rtc on i2c2.
> 
> For some unknown reason, the onboard backup battery alone can not
> supply enough power to the internal rtc. When external power is
> removed, the internal rtc would reset. Hence we want to use the
> external one by default.
> 
> Add aliases for the rtc devices with the external one as rtc0.
> 
> Signed-off-by: Chen-Yu Tsai <wens@csie.org>

Ordered the aliases alphabetically, and applied. Thanks!
Maxime

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

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