arm64: dts: ti: k3-am625-sk: Enable PWM

PWM signals can be routed to the user expansion header on am625
SK and am62 lp sk. Enable eCAP0, eCAP1, eHRPWM1, and route the
output PWM signals to pins on J3 header.

Signed-off-by: Judith Mendez <jm@ti.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
Link: https://lore.kernel.org/r/20250422000851.4118545-4-jm@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
index d52cb2a5a589a8e5eb325fd90324d57ec1e3783b..20d1437f253d45ff4081020638f86477a321a38b 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
@@ -303,6 +303,25 @@
                        AM62X_IOPAD(0x078, PIN_OUTPUT, 1) /* (U24) GPMC0_AD15.VOUT0_DATA23 */
                >;
        };
+
+       main_ecap0_pins_default: main-ecap0-default-pins {
+               pinctrl-single,pins = <
+                       AM62X_IOPAD(0x01b8, PIN_OUTPUT, 3) /* (C13) SPI0_CS1.ECAP0_IN_APWM_OUT */
+               >;
+       };
+
+       main_ecap2_pins_default: main-ecap2-default-pins {
+               pinctrl-single,pins = <
+                       AM62X_IOPAD(0x01a4, PIN_OUTPUT, 2) /* (B20) MCASP0_ACLKX.ECAP2_IN_APWM_OUT */
+               >;
+       };
+
+       main_epwm1_pins_default: main-epwm1-default-pins {
+               pinctrl-single,pins = <
+                       AM62X_IOPAD(0x019c, PIN_OUTPUT, 6) /* (B18) MCASP0_AXR1.EHRPWM1_A */
+                       AM62X_IOPAD(0x01a0, PIN_OUTPUT, 6) /* (E18) MCASP0_AXR0.EHRPWM1_B */
+               >;
+       };
 };
 
 &mcu_pmx0 {
@@ -560,3 +579,24 @@
 &mcu_gpio_intr {
        status = "reserved";
 };
+
+&ecap0 {
+       /* P26 of J3 */
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_ecap0_pins_default>;
+       status = "okay";
+};
+
+&ecap2 {
+       /* P11 of J3 */
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_ecap2_pins_default>;
+       status = "okay";
+};
+
+&epwm1 {
+       /* P36/P33 of J3 */
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_epwm1_pins_default>;
+       status = "okay";
+};