From: Grygorii Strashko <grygorii.strashko-l0cyMroinI0@public.gmane.org>
To: tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org
Cc: slash.tmp-GANU6spQydw@public.gmane.org,
nsekhar-l0cyMroinI0@public.gmane.org,
t-kristo-l0cyMroinI0@public.gmane.org,
linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Grygorii Strashko
<grygorii.strashko-l0cyMroinI0@public.gmane.org>,
Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>,
Santosh Shilimkar
<ssantosh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: [4.4-rc][PATCH] ARM: dts: am4372: disable arm twd and global timer's nodes
Date: Wed, 18 Nov 2015 16:01:55 +0200 [thread overview]
Message-ID: <1447855315-419-1-git-send-email-grygorii.strashko@ti.com> (raw)
Keep ARM TWD and Global timer's nodes disabled by default - if someone
would like to use them then those nodes have to be enabled explicitly
in board file.
The reason for this change is:
- ARM TWD is not always-on timer on am437x and it will stop in low
CPUIdle states and, therefore, broadcast timer has to configured
properly if CPU_IDLE=y.
- ARM Global timer is not always-on timer on am437x and it can't be
used as clocksource device if CPU_IDLE=y.
- ARM Global timer driver doesn't support CPUfreq now.
Cc: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
Cc: Santosh Shilimkar <ssantosh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko-l0cyMroinI0@public.gmane.org>
---
arch/arm/boot/dts/am4372.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index d83ff9c..11376e3 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -75,6 +75,7 @@
interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
interrupt-parent = <&gic>;
clocks = <&dpll_mpu_m2_ck>;
+ status = "disabled";
};
local_timer: timer@48240600 {
@@ -83,6 +84,7 @@
interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_HIGH>;
interrupt-parent = <&gic>;
clocks = <&dpll_mpu_m2_ck>;
+ status = "disabled";
};
l2-cache-controller@48242000 {
--
2.6.3
--
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next reply other threads:[~2015-11-18 14:01 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-18 14:01 Grygorii Strashko [this message]
[not found] ` <1447855315-419-1-git-send-email-grygorii.strashko-l0cyMroinI0@public.gmane.org>
2015-11-18 14:15 ` [4.4-rc][PATCH] ARM: dts: am4372: disable arm twd and global timer's nodes Mark Rutland
2015-11-18 15:35 ` Grygorii Strashko
[not found] ` <564C9ACF.6040107-l0cyMroinI0@public.gmane.org>
2015-12-03 16:33 ` Tony Lindgren
[not found] ` <20151203163311.GP23396-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2015-12-03 16:37 ` Tony Lindgren
[not found] ` <20151203163708.GR23396-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2015-12-03 18:20 ` Grygorii Strashko
[not found] ` <566087DD.2040006-l0cyMroinI0@public.gmane.org>
2015-12-03 19:23 ` Tony Lindgren
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