[PATCH 05/10] arm64: dts: ti: k3-am64: Enable ECAP nodes at the board level

Andrew Davis afd at ti.com
Mon Oct 17 12:25:27 PDT 2022


ECAP nodes defined in the top-level AM64x SoC dtsi files are incomplete
and will not be functional unless they are extended with pinmux
information. (These and the EPWM nodes could be used to trigger internal
actions but they are not used like that currently)

As the pinmux is only known at the board integration level, these
nodes should only be enabled when provided with this information.

Disable the ECAP nodes in the dtsi files and only enable the ones that
are actually pinned out on a given board.

Signed-off-by: Andrew Davis <afd at ti.com>
---
 arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 3 +++
 arch/arm64/boot/dts/ti/k3-am642-evm.dts  | 9 +--------
 arch/arm64/boot/dts/ti/k3-am642-sk.dts   | 9 +--------
 3 files changed, 5 insertions(+), 16 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
index 672575f44529..ef1833f65bdc 100644
--- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
@@ -988,6 +988,7 @@ ecap0: pwm at 23100000 {
 		power-domains = <&k3_pds 51 TI_SCI_PD_EXCLUSIVE>;
 		clocks = <&k3_clks 51 0>;
 		clock-names = "fck";
+		status = "disabled";
 	};
 
 	ecap1: pwm at 23110000 {
@@ -997,6 +998,7 @@ ecap1: pwm at 23110000 {
 		power-domains = <&k3_pds 52 TI_SCI_PD_EXCLUSIVE>;
 		clocks = <&k3_clks 52 0>;
 		clock-names = "fck";
+		status = "disabled";
 	};
 
 	ecap2: pwm at 23120000 {
@@ -1006,6 +1008,7 @@ ecap2: pwm at 23120000 {
 		power-domains = <&k3_pds 53 TI_SCI_PD_EXCLUSIVE>;
 		clocks = <&k3_clks 53 0>;
 		clock-names = "fck";
+		status = "disabled";
 	};
 
 	main_rti0: watchdog at e000000 {
diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index cef3afa10c39..43d50ecfb211 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -567,19 +567,12 @@ &pcie0_ep {
 };
 
 &ecap0 {
+	status = "okay";
 	/* PWM is available on Pin 1 of header J12 */
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_ecap0_pins_default>;
 };
 
-&ecap1 {
-	status = "disabled";
-};
-
-&ecap2 {
-	status = "disabled";
-};
-
 &icssg0_mdio {
 	status = "disabled";
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 51f4ae165c13..8b9987ccdc1b 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -566,19 +566,12 @@ &pcie0_ep {
 };
 
 &ecap0 {
+	status = "okay";
 	/* PWM is available on Pin 1 of header J3 */
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_ecap0_pins_default>;
 };
 
-&ecap1 {
-	status = "disabled";
-};
-
-&ecap2 {
-	status = "disabled";
-};
-
 &icssg0_mdio {
 	status = "disabled";
 };
-- 
2.37.3




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