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From: Tony Lindgren <tony@atomide.com>
To: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org, Keerthy <j-keerthy@ti.com>,
	Nishanth Menon <nm@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>
Subject: Re: [PATCH v2 0/2] Configure dmtimers for am65
Date: Tue, 30 Aug 2022 10:22:47 +0300	[thread overview]
Message-ID: <Yw26x4AGfGC7xExu@atomide.com> (raw)
In-Reply-To: <20220830070750.30640-1-tony@atomide.com>

* Tony Lindgren <tony@atomide.com> [220830 07:08]:
> Here's v2 series for adding the dmtimers for am65. The device tree binding
> and related driver related changes have been already merged.

FYI, something like the patch below can be used to configure the main
timer0 for PWM. It uses TIMERIO0 for output, and muxes TIMERIO0 pad to
a k3-am654-base-board header pin.

Just for reference only, not for merging, as the k3-am654-base-board header
usage may vary.

Regards,

Tony


diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
--- a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
@@ -86,6 +86,14 @@ switch-6 {
 		};
 	};
 
+	main_pwm0: dmtimer-main-pwm-0 {
+		pinctrl-0 = <&main_timer0_outsel_pins_default>, <&main_timer0_pins_default>;
+		pinctrl-names = "default";
+		compatible = "ti,omap-dmtimer-pwm";
+		#pwm-cells = <3>;
+		ti,timers = <&main_timer0>;
+	};
+
 	evm_12v0: fixedregulator-evm12v0 {
 		/* main supply */
 		compatible = "regulator-fixed";
@@ -119,6 +127,13 @@ vdd_mmc1_sd: fixedregulator-sd {
 	};
 };
 
+&main_timerio_output {
+	main_timer0_outsel_pins_default: main-timer0-outsel-pins-default {
+		/* CTRLMMR_TIMERIO0_CTRL 0x00104280 OUT_SEL.TIMERIO0 */
+		pinctrl-single,pins = <0 0>;
+	};
+};
+
 &wkup_pmx0 {
 	wkup_i2c0_pins_default: wkup-i2c0-pins-default {
 		pinctrl-single,pins = <
@@ -264,6 +279,13 @@ ecap0_pins_default: ecap0-pins-default {
 			AM65X_IOPAD(0x0010, PIN_INPUT, 0) /* (D21) ECAP0_IN_APWM_OUT */
 		>;
 	};
+
+	main_timer0_pins_default: main-timer0-pins-default {
+		pinctrl-single,pins = <
+			/* CTRLMMR_PADCONFIG192 0x0011c300 TIMER_IO0 */
+			AM65X_IOPAD(0x0018, PIN_OUTPUT, 0)
+		>;
+	};
 };
 
 &wkup_uart0 {
-- 
2.37.1

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WARNING: multiple messages have this Message-ID (diff)
From: Tony Lindgren <tony@atomide.com>
To: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org, Keerthy <j-keerthy@ti.com>,
	Nishanth Menon <nm@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>
Subject: Re: [PATCH v2 0/2] Configure dmtimers for am65
Date: Tue, 30 Aug 2022 10:22:47 +0300	[thread overview]
Message-ID: <Yw26x4AGfGC7xExu@atomide.com> (raw)
In-Reply-To: <20220830070750.30640-1-tony@atomide.com>

* Tony Lindgren <tony@atomide.com> [220830 07:08]:
> Here's v2 series for adding the dmtimers for am65. The device tree binding
> and related driver related changes have been already merged.

FYI, something like the patch below can be used to configure the main
timer0 for PWM. It uses TIMERIO0 for output, and muxes TIMERIO0 pad to
a k3-am654-base-board header pin.

Just for reference only, not for merging, as the k3-am654-base-board header
usage may vary.

Regards,

Tony


diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
--- a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
@@ -86,6 +86,14 @@ switch-6 {
 		};
 	};
 
+	main_pwm0: dmtimer-main-pwm-0 {
+		pinctrl-0 = <&main_timer0_outsel_pins_default>, <&main_timer0_pins_default>;
+		pinctrl-names = "default";
+		compatible = "ti,omap-dmtimer-pwm";
+		#pwm-cells = <3>;
+		ti,timers = <&main_timer0>;
+	};
+
 	evm_12v0: fixedregulator-evm12v0 {
 		/* main supply */
 		compatible = "regulator-fixed";
@@ -119,6 +127,13 @@ vdd_mmc1_sd: fixedregulator-sd {
 	};
 };
 
+&main_timerio_output {
+	main_timer0_outsel_pins_default: main-timer0-outsel-pins-default {
+		/* CTRLMMR_TIMERIO0_CTRL 0x00104280 OUT_SEL.TIMERIO0 */
+		pinctrl-single,pins = <0 0>;
+	};
+};
+
 &wkup_pmx0 {
 	wkup_i2c0_pins_default: wkup-i2c0-pins-default {
 		pinctrl-single,pins = <
@@ -264,6 +279,13 @@ ecap0_pins_default: ecap0-pins-default {
 			AM65X_IOPAD(0x0010, PIN_INPUT, 0) /* (D21) ECAP0_IN_APWM_OUT */
 		>;
 	};
+
+	main_timer0_pins_default: main-timer0-pins-default {
+		pinctrl-single,pins = <
+			/* CTRLMMR_PADCONFIG192 0x0011c300 TIMER_IO0 */
+			AM65X_IOPAD(0x0018, PIN_OUTPUT, 0)
+		>;
+	};
 };
 
 &wkup_uart0 {
-- 
2.37.1

  parent reply	other threads:[~2022-08-30  7:23 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-30  7:07 [PATCH v2 0/2] Configure dmtimers for am65 Tony Lindgren
2022-08-30  7:07 ` Tony Lindgren
2022-08-30  7:07 ` [PATCH v2 1/2] arm64: dts: ti: k3-am65: Configure pinctrl for timer IO pads Tony Lindgren
2022-08-30  7:07   ` Tony Lindgren
2022-08-30  7:07 ` [PATCH v2 2/2] arm64: dts: ti: k3-am65: Add general purpose timers for am65 Tony Lindgren
2022-08-30  7:07   ` Tony Lindgren
2022-08-31  5:05   ` Tony Lindgren
2022-08-31  5:05     ` Tony Lindgren
2022-09-01 10:37     ` Vignesh Raghavendra
2022-09-01 10:37       ` Vignesh Raghavendra
2022-08-30  7:22 ` Tony Lindgren [this message]
2022-08-30  7:22   ` [PATCH v2 0/2] Configure dmtimers " Tony Lindgren

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