linux-kernel - [PATCH asahi-soc/dt] arm64: dts: apple: t7000: Add missing CPU p-state 7 for J96 and J97

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Message-Id: <20250217-mini4-cpufreq-v1-1-8974e90dd806@gmail.com>
Date: Mon, 17 Feb 2025 14:10:05 +0800
From: Nick Chan <towinchenmi@...il.com>
To: Sven Peter <sven@...npeter.dev>, Janne Grunau <j@...nau.net>, 
 Alyssa Rosenzweig <alyssa@...enzweig.io>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Neal Gompa <neal@...pa.dev>, 
 Nick Chan <towinchenmi@...il.com>
Cc: asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH asahi-soc/dt] arm64: dts: apple: t7000: Add missing CPU
 p-state 7 for J96 and J97

Add missing CPU p-state 7 @ 1512 MHz for iPad mini 4.

Fixes: e97323994f4a ("arm64: dts: apple: t7000: Add cpufreq nodes")
Signed-off-by: Nick Chan <towinchenmi@...il.com>
---
Note, some sources state that Apple TV HD has 1512 MHz A8 too, but that
is incorrect, the maximum frequency on Apple TV HD as configured by iBoot
is 1392 MHz.
---
 arch/arm64/boot/dts/apple/t7000-mini4.dtsi | 4 ++++
 arch/arm64/boot/dts/apple/t7000.dtsi       | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/apple/t7000-mini4.dtsi b/arch/arm64/boot/dts/apple/t7000-mini4.dtsi
index 6da15d15601bcd553d6d0e3fda93df4685b57ee1..cc235c5a0c438f3f07ce5318a75dd928615b7818 100644
--- a/arch/arm64/boot/dts/apple/t7000-mini4.dtsi
+++ b/arch/arm64/boot/dts/apple/t7000-mini4.dtsi
@@ -57,3 +57,7 @@ &framebuffer0 {
 &typhoon_opp06 {
 	status = "okay";
 };
+
+&typhoon_opp07 {
+	status = "okay";
+};
diff --git a/arch/arm64/boot/dts/apple/t7000.dtsi b/arch/arm64/boot/dts/apple/t7000.dtsi
index d4b479ccfe8c9309b8de6c23f1e90000ad287992..32cac8c30e62d657079dbf32aece8af0fd9cef38 100644
--- a/arch/arm64/boot/dts/apple/t7000.dtsi
+++ b/arch/arm64/boot/dts/apple/t7000.dtsi
@@ -84,6 +84,12 @@ typhoon_opp06: opp06 {
 			clock-latency-ns = <42000>;
 			status = "disabled"; /* Not available on N102 */
 		};
+		typhoon_opp07: opp07 {
+			opp-hz = /bits/ 64 <1512000000>;
+			opp-level = <7>;
+			clock-latency-ns = <49000>;
+			status = "disabled"; /* J96 and J97 only */
+		};
 	};
 
 	soc {

---
base-commit: ca96d759d8d24d90b1726c2cc7c568ff4728bb42
change-id: 20250217-mini4-cpufreq-fd6c19346518

Best regards,
-- 
Nick Chan <towinchenmi@...il.com>