Re: [PATCH 1/2] arm: mvebu: disable unused Armada RTC on ReadyNAS 102, 104 and 2120
From: Gregory CLEMENT <hidden>
Date: 2015-10-12 16:32:36
Also in:
linux-arm-kernel, lkml
Hi Arnaud, On sam., oct. 10 2015, Arnaud Ebalard [off-list ref] 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 <redacted> Signed-off-by: Arnaud Ebalard <redacted>
Applied on mvebu/dt with Andrew's acked-by Thanks, Gregory
quoted hunk
--- 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@10300 { + status = "disabled"; + }; + serial@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@10300 { + status = "disabled"; + }; + serial@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@10300 { + status = "disabled"; + }; + /* Two rear eSATA ports */ sata@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