arm64: dts: ti: k3-am62a7-sk: Enable PWM

PWM signals can be routed to the user expansion header on am62a7
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/20250422000851.4118545-3-jm@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
index 1c9d95696c839a51b607839abb9429a8de6fa620..a9557ee73b8311087db9ce9cd9596efb8bb8975d 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
@@ -383,6 +383,25 @@
                        AM62AX_IOPAD(0x07c, PIN_OUTPUT, 7) /* (M19) GPMC0_CLK.GPIO0_31 */
                >;
        };
+
+       main_ecap0_pins_default: main-ecap0-default-pins {
+               pinctrl-single,pins = <
+                       AM62AX_IOPAD(0x01b8, PIN_OUTPUT, 3) /* (C16) SPI0_CS1.ECAP0_IN_APWM_OUT */
+               >;
+       };
+
+       main_ecap2_pins_default: main-ecap2-default-pins {
+               pinctrl-single,pins = <
+                       AM62AX_IOPAD(0x01a4, PIN_OUTPUT, 2) /* (A19) MCASP0_ACLKX.ECAP2_IN_APWM_OUT */
+               >;
+       };
+
+       main_epwm1_pins_default: main-epwm1-default-pins {
+               pinctrl-single,pins = <
+                       AM62AX_IOPAD(0x019c, PIN_OUTPUT, 6) /* (B18) MCASP0_AXR1.EHRPWM1_A */
+                       AM62AX_IOPAD(0x01a0, PIN_OUTPUT, 6) /* (B20) MCASP0_AXR0.EHRPWM1_B */
+               >;
+       };
 };
 
 &mcu_pmx0 {
@@ -741,3 +760,24 @@
                };
        };
 };
+
+&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";
+};