ecap0 can be configured to use pad ECAP0_IN_APWM_OUT (D18) which has a
signal connected to Pin 1 of J3. Add support for adding this pinmux so
that pwm can be observed on pin 1 of Header J3
Also mark all un-used epwm and ecap pwm nodes as disabled.
Signed-off-by: Lokesh Vutla <lokeshvutla@xxxxxx>
---
arch/arm64/boot/dts/ti/k3-am642-sk.dts | 64 ++++++++++++++++++++++++++
1 file changed, 64 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index d3aa2901e6fd..6b45cdeeeefa 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -210,6 +210,12 @@ AM64X_IOPAD(0x0028, PIN_INPUT, 0) /* (M17) OSPI0_D7 */
AM64X_IOPAD(0x0008, PIN_INPUT, 0) /* (N19) OSPI0_DQS */
>;
};
+
+ main_ecap0_pins_default: main-ecap0-pins-default {
+ pinctrl-single,pins = <
+ AM64X_IOPAD(0x0270, PIN_INPUT, 0) /* (D18) ECAP0_IN_APWM_OUT */
+ >;
+ };
};
&mcu_uart0 {
@@ -453,3 +459,61 @@ &pcie0_rc {
&pcie0_ep {
status = "disabled";
};
+
+&ecap0 {
+ /* PWM is available on Pin 1 of header J3 */
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_ecap0_pins_default>;
+};
+
+&ecap1 {
+ status = "disabled";
+};
+
+&ecap2 {
+ status = "disabled";
+};
+
+&epwm0 {
+ status = "disabled";
+};
+
+&epwm1 {
+ status = "disabled";
+};
+
+&epwm2 {
+ status = "disabled";
+};
+
+&epwm3 {
+ status = "disabled";
+};
+
+&epwm4 {
+ /*
+ * EPWM4_A, EPWM4_B is available on Pin 32 and 33 on J4 (RPi hat)
+ * But RPi Hat will be used for other use cases, so marking epwm4 as disabled.
+ */
+ status = "disabled";
+};
+
+&epwm5 {
+ /*
+ * EPWM5_A, EPWM5_B is available on Pin 29 and 31 on J4 (RPi hat)
+ * But RPi Hat will be used for other use cases, so marking epwm5 as disabled.
+ */
+ status = "disabled";
+};
+
+&epwm6 {
+ status = "disabled";
+};
+
+&epwm7 {
+ status = "disabled";
+};
+
+&epwm8 {
+ status = "disabled";
+};
--
2.31.1
