All of lore.kernel.org
 help / color / mirror / Atom feed
From: Anson Huang <Anson.Huang@nxp.com>
To: robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org,
	s.hauer@pengutronix.de, kernel@pengutronix.de,
	festevam@gmail.com, daniel.lezcano@linaro.org,
	tglx@linutronix.de, leonard.crestez@nxp.com,
	daniel.baluta@nxp.com, ping.bai@nxp.com, jun.li@nxp.com,
	l.stach@pengutronix.de, abel.vesa@nxp.com, ccaione@baylibre.com,
	andrew.smirnov@gmail.com, angus@akkea.ca, agx@sigxcpu.org,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: Linux-imx@nxp.com
Subject: [PATCH V6 4/4] arm64: dts: imx8mm: Enable cpu-idle driver
Date: Thu, 15 Aug 2019 20:38:45 -0400	[thread overview]
Message-ID: <1565915925-21009-4-git-send-email-Anson.Huang@nxp.com> (raw)
In-Reply-To: <1565915925-21009-1-git-send-email-Anson.Huang@nxp.com>

Enable i.MX8MM cpu-idle using generic ARM cpu-idle driver, 2 states
are supported, details as below:

root@imx8mmevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state0/name
WFI
root@imx8mmevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state0/usage
3973
root@imx8mmevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state1/name
cpu-pd-wait
root@imx8mmevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state1/usage
6647

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
Changes since V5:
	- improve state1 idle name to better match PSCI doc;
	- remove wakeup-latency-us property as it is NOT necessary when entry-latency-us/exit-latency-us
	  exist.
---
 arch/arm64/boot/dts/freescale/imx8mm.dtsi | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index 94433c53..9b2dc12 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -44,6 +44,19 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
+		idle-states {
+			entry-method = "psci";
+
+			cpu_pd_wait: cpu-pd-wait {
+				compatible = "arm,idle-state";
+				arm,psci-suspend-param = <0x0010033>;
+				local-timer-stop;
+				entry-latency-us = <1000>;
+				exit-latency-us = <700>;
+				min-residency-us = <2700>;
+			};
+		};
+
 		A53_0: cpu@0 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a53";
@@ -56,6 +69,7 @@
 			nvmem-cells = <&cpu_speed_grade>;
 			nvmem-cell-names = "speed_grade";
 			#cooling-cells = <2>;
+			cpu-idle-states = <&cpu_pd_wait>;
 		};
 
 		A53_1: cpu@1 {
@@ -68,6 +82,7 @@
 			next-level-cache = <&A53_L2>;
 			operating-points-v2 = <&a53_opp_table>;
 			#cooling-cells = <2>;
+			cpu-idle-states = <&cpu_pd_wait>;
 		};
 
 		A53_2: cpu@2 {
@@ -80,6 +95,7 @@
 			next-level-cache = <&A53_L2>;
 			operating-points-v2 = <&a53_opp_table>;
 			#cooling-cells = <2>;
+			cpu-idle-states = <&cpu_pd_wait>;
 		};
 
 		A53_3: cpu@3 {
@@ -92,6 +108,7 @@
 			next-level-cache = <&A53_L2>;
 			operating-points-v2 = <&a53_opp_table>;
 			#cooling-cells = <2>;
+			cpu-idle-states = <&cpu_pd_wait>;
 		};
 
 		A53_L2: l2-cache0 {
-- 
2.7.4


WARNING: multiple messages have this Message-ID (diff)
From: Anson Huang <Anson.Huang@nxp.com>
To: robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org,
	s.hauer@pengutronix.de, kernel@pengutronix.de,
	festevam@gmail.com, daniel.lezcano@linaro.org,
	tglx@linutronix.de, leonard.crestez@nxp.com,
	daniel.baluta@nxp.com, ping.bai@nxp.com, jun.li@nxp.com,
	l.stach@pengutronix.de, abel.vesa@nxp.com, ccaione@baylibre.com,
	andrew.smirnov@gmail.com, angus@akkea.ca, agx@sigxcpu.org,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: Linux-imx@nxp.com
Subject: [PATCH V6 4/4] arm64: dts: imx8mm: Enable cpu-idle driver
Date: Thu, 15 Aug 2019 20:38:45 -0400	[thread overview]
Message-ID: <1565915925-21009-4-git-send-email-Anson.Huang@nxp.com> (raw)
In-Reply-To: <1565915925-21009-1-git-send-email-Anson.Huang@nxp.com>

Enable i.MX8MM cpu-idle using generic ARM cpu-idle driver, 2 states
are supported, details as below:

root@imx8mmevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state0/name
WFI
root@imx8mmevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state0/usage
3973
root@imx8mmevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state1/name
cpu-pd-wait
root@imx8mmevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state1/usage
6647

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
Changes since V5:
	- improve state1 idle name to better match PSCI doc;
	- remove wakeup-latency-us property as it is NOT necessary when entry-latency-us/exit-latency-us
	  exist.
---
 arch/arm64/boot/dts/freescale/imx8mm.dtsi | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index 94433c53..9b2dc12 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -44,6 +44,19 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
+		idle-states {
+			entry-method = "psci";
+
+			cpu_pd_wait: cpu-pd-wait {
+				compatible = "arm,idle-state";
+				arm,psci-suspend-param = <0x0010033>;
+				local-timer-stop;
+				entry-latency-us = <1000>;
+				exit-latency-us = <700>;
+				min-residency-us = <2700>;
+			};
+		};
+
 		A53_0: cpu@0 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a53";
@@ -56,6 +69,7 @@
 			nvmem-cells = <&cpu_speed_grade>;
 			nvmem-cell-names = "speed_grade";
 			#cooling-cells = <2>;
+			cpu-idle-states = <&cpu_pd_wait>;
 		};
 
 		A53_1: cpu@1 {
@@ -68,6 +82,7 @@
 			next-level-cache = <&A53_L2>;
 			operating-points-v2 = <&a53_opp_table>;
 			#cooling-cells = <2>;
+			cpu-idle-states = <&cpu_pd_wait>;
 		};
 
 		A53_2: cpu@2 {
@@ -80,6 +95,7 @@
 			next-level-cache = <&A53_L2>;
 			operating-points-v2 = <&a53_opp_table>;
 			#cooling-cells = <2>;
+			cpu-idle-states = <&cpu_pd_wait>;
 		};
 
 		A53_3: cpu@3 {
@@ -92,6 +108,7 @@
 			next-level-cache = <&A53_L2>;
 			operating-points-v2 = <&a53_opp_table>;
 			#cooling-cells = <2>;
+			cpu-idle-states = <&cpu_pd_wait>;
 		};
 
 		A53_L2: l2-cache0 {
-- 
2.7.4


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2019-08-16  0:57 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-16  0:38 [PATCH V6 1/4] clocksource: imx-sysctr: Add internal clock divider handle Anson Huang
2019-08-16  0:38 ` Anson Huang
2019-08-16  0:38 ` [PATCH V6 2/4] arm64: dts: imx8mm: Add system counter node Anson Huang
2019-08-16  0:38   ` Anson Huang
2019-08-16  0:38 ` [PATCH V6 3/4] arm64: dts: imx8mq: " Anson Huang
2019-08-16  0:38   ` Anson Huang
2019-08-16  0:38 ` Anson Huang [this message]
2019-08-16  0:38   ` [PATCH V6 4/4] arm64: dts: imx8mm: Enable cpu-idle driver Anson Huang
2019-08-16  9:59   ` Daniel Lezcano
2019-08-16  9:59     ` Daniel Lezcano
2019-08-16 10:08     ` Anson Huang
2019-08-16 10:08       ` Anson Huang
2019-08-16 10:08       ` Anson Huang
2019-08-16 10:37       ` Anson Huang
2019-08-16 10:37         ` Anson Huang
2019-08-16 10:37         ` Anson Huang

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1565915925-21009-4-git-send-email-Anson.Huang@nxp.com \
    --to=anson.huang@nxp.com \
    --cc=Linux-imx@nxp.com \
    --cc=abel.vesa@nxp.com \
    --cc=agx@sigxcpu.org \
    --cc=andrew.smirnov@gmail.com \
    --cc=angus@akkea.ca \
    --cc=ccaione@baylibre.com \
    --cc=daniel.baluta@nxp.com \
    --cc=daniel.lezcano@linaro.org \
    --cc=devicetree@vger.kernel.org \
    --cc=festevam@gmail.com \
    --cc=jun.li@nxp.com \
    --cc=kernel@pengutronix.de \
    --cc=l.stach@pengutronix.de \
    --cc=leonard.crestez@nxp.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=ping.bai@nxp.com \
    --cc=robh+dt@kernel.org \
    --cc=s.hauer@pengutronix.de \
    --cc=shawnguo@kernel.org \
    --cc=tglx@linutronix.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.