linux-kernel - [PATCH] arm64: dts: ti: k3-am62: use opp_efuse

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Message-ID: <20240827080007.2097276-1-d-gole@ti.com>
Date: Tue, 27 Aug 2024 13:30:07 +0530
From: Dhruva Gole <d-gole@...com>
To: Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>,
        Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>
CC: <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...r.kernel.org>,
        Kevin
 Hilman <khilman@...libre.com>,
        Markus Schneider-Pargmann <msp@...libre.com>,
        Andrew Davis <afd@...com>, Dhruva Gole <d-gole@...com>,
        Bryan Brattlof
	<bb@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Vibhore Vardhan
	<vibhore@...com>
Subject: [PATCH] arm64: dts: ti: k3-am62: use opp_efuse_table for opp-table syscon

Add another entry in the wkup_conf for the syscon node, and then use
that for the syscon in opp-table.

Marking entire wkup_conf as "syscon", "simple-mfd" is wrong and needs to
be addressed similar to how other child-nodes in wkup_conf are implemented
in the same file.

Signed-off-by: Dhruva Gole <d-gole@...com>
---

Based on the discussion we had on [0] for AM62P/A devices setting OPP,
Here we fix the AM625's opp-table using the syscon region in wkup_conf.

Build tested on top of linux-next.

Cc: Bryan Brattlof <bb@...com>
Cc: Vignesh Raghavendra <vigneshr@...com>
Cc: Vibhore Vardhan <vibhore@...com>

---

 arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi | 5 +++++
 arch/arm64/boot/dts/ti/k3-am625.dtsi       | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
index e0afafd532a5..3aff8af549a5 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
@@ -22,6 +22,11 @@ chipid: chipid@14 {
 			reg = <0x14 0x4>;
 		};
 
+		opp_efuse_table: syscon@18 {
+			compatible = "ti,am62-opp-efuse-table", "syscon";
+			reg = <0x18 0x4>;
+		};
+
 		cpsw_mac_syscon: ethernet-mac-syscon@200 {
 			compatible = "ti,am62p-cpsw-mac-efuse", "syscon";
 			reg = <0x200 0x8>;
diff --git a/arch/arm64/boot/dts/ti/k3-am625.dtsi b/arch/arm64/boot/dts/ti/k3-am625.dtsi
index c3d1db47dc9f..c249883a8a8d 100644
--- a/arch/arm64/boot/dts/ti/k3-am625.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am625.dtsi
@@ -108,7 +108,7 @@ cpu3: cpu@3 {
 	a53_opp_table: opp-table {
 		compatible = "operating-points-v2-ti-cpu";
 		opp-shared;
-		syscon = <&wkup_conf>;
+		syscon = <&opp_efuse_table>;
 
 		opp-200000000 {
 			opp-hz = /bits/ 64 <200000000>;

base-commit: 1ca4237ad9ce29b0c66fe87862f1da54ac56a1e8
-- 
2.34.1