diff mbox

[RFC/RFT,4/4,debug] ARM: am335x: illustrate hwstamp

Message ID 20170613231623.28353-5-grygorii.strashko@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Grygorii Strashko June 13, 2017, 11:16 p.m. UTC
This patch allows to test CPTS HW_TS_PUSH functionality on am335x boards

below sequence of commands will enable Timer7 to trigger 1sec
periodic pulses on CPTS HW4_TS_PUSH input pin:

 # echo 1000000000 > /sys/class/pwm/pwmchip0/pwm0/period
 # echo 500000000 > /sys/class/pwm/pwmchip0/pwm0/duty_cycle
 # echo 1 > /sys/class/pwm/pwmchip0/pwm0/enable
 # ./ptp/testptp -e 10 -i 3
external time stamp request okay
event index 3 at 1493259028.376600798
event index 3 at 1493259029.377170898
event index 3 at 1493259030.377741039
event index 3 at 1493259031.378311139
event index 3 at 1493259032.378881279
event index 3 at 1493259033.379451424
event index 3 at 1493259034.380021520
event index 3 at 1493259035.380591660
event index 3 at 1493259036.381161765
event index 3 at 1493259037.381731909

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
 arch/arm/boot/dts/am335x-boneblack.dts | 6 ++++++
 arch/arm/boot/dts/am335x-evm.dts       | 7 +++++++
 arch/arm/boot/dts/am33xx.dtsi          | 1 +
 arch/arm/configs/omap2plus_defconfig   | 2 +-
 4 files changed, 15 insertions(+), 1 deletion(-)

Comments

Tony Lindgren June 14, 2017, 5:38 a.m. UTC | #1
* Grygorii Strashko <grygorii.strashko@ti.com> [170613 16:20]:
> This patch allows to test CPTS HW_TS_PUSH functionality on am335x boards
> 
> below sequence of commands will enable Timer7 to trigger 1sec
> periodic pulses on CPTS HW4_TS_PUSH input pin:
> 
>  # echo 1000000000 > /sys/class/pwm/pwmchip0/pwm0/period
>  # echo 500000000 > /sys/class/pwm/pwmchip0/pwm0/duty_cycle
>  # echo 1 > /sys/class/pwm/pwmchip0/pwm0/enable
>  # ./ptp/testptp -e 10 -i 3
> external time stamp request okay
> event index 3 at 1493259028.376600798
> event index 3 at 1493259029.377170898
> event index 3 at 1493259030.377741039
> event index 3 at 1493259031.378311139
> event index 3 at 1493259032.378881279
> event index 3 at 1493259033.379451424
> event index 3 at 1493259034.380021520
> event index 3 at 1493259035.380591660
> event index 3 at 1493259036.381161765
> event index 3 at 1493259037.381731909

Cool :)

Acked-by: Tony Lindgren <tony@atomide.com>
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diff mbox

Patch

diff --git a/arch/arm/boot/dts/am335x-boneblack.dts b/arch/arm/boot/dts/am335x-boneblack.dts
index 935ed17..997f5b4 100644
--- a/arch/arm/boot/dts/am335x-boneblack.dts
+++ b/arch/arm/boot/dts/am335x-boneblack.dts
@@ -25,4 +25,10 @@ 
 	oppnitro@1000000000 {
 		opp-supported-hw = <0x06 0x0100>;
 	};
+
+	pwm7: dmtimer-pwm {
+		compatible = "ti,omap-dmtimer-pwm";
+		ti,timers = <&timer7>;
+		#pwm-cells = <3>;
+	};
 };
diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts
index 1c37a7c..ec36197 100644
--- a/arch/arm/boot/dts/am335x-evm.dts
+++ b/arch/arm/boot/dts/am335x-evm.dts
@@ -164,6 +164,13 @@ 
 			system-clock-frequency = <12000000>;
 		};
 	};
+
+	pwm7: dmtimer-pwm {
+		compatible = "ti,omap-dmtimer-pwm";
+		ti,timers = <&timer7>;
+		#pwm-cells = <3>;
+	};
+
 };
 
 &am33xx_pinmux {
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index 9e24294..1a64b80 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -864,6 +864,7 @@ 
 			ranges;
 			syscon = <&scm_conf>;
 			status = "disabled";
+			cpts-ext-ts-inputs = <4>;
 
 			davinci_mdio: mdio@4a101000 {
 				compatible = "ti,cpsw-mdio","ti,davinci_mdio";
diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig
index a120ae8..6d3dcbc 100644
--- a/arch/arm/configs/omap2plus_defconfig
+++ b/arch/arm/configs/omap2plus_defconfig
@@ -459,7 +459,7 @@  CONFIG_CPCAP_ADC=m
 CONFIG_TI_AM335X_ADC=m
 CONFIG_BMP280=m
 CONFIG_PWM=y
-CONFIG_PWM_OMAP_DMTIMER=m
+CONFIG_PWM_OMAP_DMTIMER=y
 CONFIG_PWM_TIECAP=m
 CONFIG_PWM_TIEHRPWM=m
 CONFIG_PWM_TWL=m