[PATCH 1/2] arm: mvebu: disable unused Armada RTC on ReadyNAS 102, 104 and 2120

[Gregory CLEMENT]

Hi Arnaud,
 
 On sam., oct. 10 2015, Arnaud Ebalard <arno at natisbad.org> wrote:

> By default, armada-370-xp.dtsi file has internal RTC enabled.
> NETGEAR ReadyNAS 102, 104 and 2120 all use an Intersil ISL12057
> I2C RTC chip. The internal RTC not being disabled in the .dts
> files of those devices result in the following useless first
> line during boot:
>
> [    4.500056] rtc-mv d0010300.rtc: internal RTC not ticking
> [    4.505684] i2c /dev entries driver
> [    4.513246] rtc-isl12057 0-0068: rtc core: registered rtc-isl12057 as rtc0
>
> This patch marks Armada internal RTC as disabled in individual .dts
> files of those devices.
>
> Reported-by: TuxOholic <tuxoholic at hotmail.de>
> Signed-off-by: Arnaud Ebalard <arno at natisbad.org>

Applied on mvebu/dt with Andrew's acked-by

Thanks,

Gregory
> ---
>  arch/arm/boot/dts/armada-370-netgear-rn102.dts | 6 ++++++
>  arch/arm/boot/dts/armada-370-netgear-rn104.dts | 6 ++++++
>  arch/arm/boot/dts/armada-xp-netgear-rn2120.dts | 6 ++++++
>  3 files changed, 18 insertions(+)
>
> diff --git a/arch/arm/boot/dts/armada-370-netgear-rn102.dts b/arch/arm/boot/dts/armada-370-netgear-rn102.dts
> index a31207860f34..5851964196bd 100644
> --- a/arch/arm/boot/dts/armada-370-netgear-rn102.dts
> +++ b/arch/arm/boot/dts/armada-370-netgear-rn102.dts
> @@ -82,6 +82,12 @@
>  		};
>  
>  		internal-regs {
> +
> +			/* RTC is provided by Intersil ISL12057 I2C RTC chip */
> +			rtc at 10300 {
> +				status = "disabled";
> +			};
> +
>  			serial at 12000 {
>  				status = "okay";
>  			};
> diff --git a/arch/arm/boot/dts/armada-370-netgear-rn104.dts b/arch/arm/boot/dts/armada-370-netgear-rn104.dts
> index 00540f292979..b0b07ba677b9 100644
> --- a/arch/arm/boot/dts/armada-370-netgear-rn104.dts
> +++ b/arch/arm/boot/dts/armada-370-netgear-rn104.dts
> @@ -82,6 +82,12 @@
>  		};
>  
>  		internal-regs {
> +
> +			/* RTC is provided by Intersil ISL12057 I2C RTC chip */
> +			rtc at 10300 {
> +				status = "disabled";
> +			};
> +
>  			serial at 12000 {
>  				status = "okay";
>  			};
> diff --git a/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts b/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
> index 1516fc2627f9..85b2f87c0b8a 100644
> --- a/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
> +++ b/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
> @@ -88,6 +88,12 @@
>  		};
>  
>  		internal-regs {
> +
> +			/* RTC is provided by Intersil ISL12057 I2C RTC chip */
> +			rtc at 10300 {
> +				status = "disabled";
> +			};
> +
>  			/* Two rear eSATA ports */
>  			sata at a0000 {
>  				nr-ports = <2>;
> -- 
> 2.5.3
>
>

-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com