[RFC PATCH 0/3] Make TI dmtimer features more usable

[Tony Lindgren]

* Tony Lindgren <tony at atomide.com> [221031 11:46]:
> I have only lightly tested this so far to make sure I get clock output on
> k3-am625-sk on TIMER_IO2 at user expansion connector pin 10.

For reference, I used something like the patch below to configure the timer2
for clock output.

Regards,

Tony

8< ---------------------
diff --git a/arch/arm64/boot/dts/ti/k3-am625-sk.dts b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
--- a/arch/arm64/boot/dts/ti/k3-am625-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
@@ -143,6 +143,25 @@ led-0 {
 			default-state = "off";
 		};
 	};
+
+	main_pwm2: dmtimer-main-pwm-2 {
+		pinctrl-0 = <&main_timer2_pins_default>;
+		pinctrl-names = "default";
+		compatible = "ti,omap-dmtimer-pwm";
+		#pwm-cells = <3>;
+		ti,timers = <&main_timer2>;
+		interrupts-extended = <&main_timer2 2 IRQ_TYPE_EDGE_RISING>,
+				      <&main_timer2 1 IRQ_TYPE_EDGE_RISING>,
+				      <&main_timer2 0 IRQ_TYPE_EDGE_RISING>;
+		interrupt-names = "compare", "overflow", "match";
+		clocks = <&main_timer2>;
+	};
+};
+
+&main_timer2 {
+	interrupt-controller;
+	#interrupt-cells = <2>;
+	#clock-cells = <0>;
 };
 
 &main_pmx0 {
@@ -270,6 +289,13 @@ AM62X_IOPAD(0x07c, PIN_OUTPUT, 7) /* (P25) GPMC0_CLK.GPIO0_31 */
 		>;
 	};
 
+	main_timer2_pins_default: main-timer2-pins-default {
+		pinctrl-single,pins = <
+			/* (C15) PADCFG_CTRL_PADCONFIG118 0x000f41d8 TIMER_IO2 */
+			AM65X_IOPAD(0x1d8, PIN_OUTPUT, 2)
+		>;
+	};
+
 	main_gpio1_ioexp_intr_pins_default: main-gpio1-ioexp-intr-pins-default {
 		pinctrl-single,pins = <
 			AM62X_IOPAD(0x01d4, PIN_INPUT, 7) /* (B15) UART0_RTSn.GPIO1_23 */