linux-kernel - [PATCH 04/10] arm64: dts: ti: k3-am62: Enable EPWM nodes at the board level

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Date:   Tue, 18 Oct 2022 16:15:27 -0500
From:   Andrew Davis <afd@...com>
To:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Bryan Brattlof <bb@...com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Andrew Davis <afd@...com>
Subject: [PATCH 04/10] arm64: dts: ti: k3-am62: Enable EPWM nodes at the board level

EPWM nodes defined in the top-level AM62x SoC dtsi files are incomplete
and will not be functional unless they are extended with pinmux
information.

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

Disable the EPWM 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@...com>
---
 arch/arm64/boot/dts/ti/k3-am62-main.dtsi |  3 +++
 arch/arm64/boot/dts/ti/k3-am625-sk.dts   | 12 ------------
 2 files changed, 3 insertions(+), 12 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
index 83ac2e45998d..a0d24faa6833 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
@@ -612,6 +612,7 @@ epwm0: pwm@...00000 {
 		power-domains = <&k3_pds 86 TI_SCI_PD_EXCLUSIVE>;
 		clocks = <&epwm_tbclk 0>, <&k3_clks 86 0>;
 		clock-names = "tbclk", "fck";
+		status = "disabled";
 	};
 
 	epwm1: pwm@...10000 {
@@ -621,6 +622,7 @@ epwm1: pwm@...10000 {
 		power-domains = <&k3_pds 87 TI_SCI_PD_EXCLUSIVE>;
 		clocks = <&epwm_tbclk 1>, <&k3_clks 87 0>;
 		clock-names = "tbclk", "fck";
+		status = "disabled";
 	};
 
 	epwm2: pwm@...20000 {
@@ -630,5 +632,6 @@ epwm2: pwm@...20000 {
 		power-domains = <&k3_pds 88 TI_SCI_PD_EXCLUSIVE>;
 		clocks = <&epwm_tbclk 2>, <&k3_clks 88 0>;
 		clock-names = "tbclk", "fck";
+		status = "disabled";
 	};
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am625-sk.dts b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
index c280d6c00412..4086d61807ab 100644
--- a/arch/arm64/boot/dts/ti/k3-am625-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
@@ -465,15 +465,3 @@ &ecap2 {
 &main_mcan0 {
 	status = "disabled";
 };
-
-&epwm0 {
-	status = "disabled";
-};
-
-&epwm1 {
-	status = "disabled";
-};
-
-&epwm2 {
-	status = "disabled";
-};
-- 
2.37.3