From: Robert Marko <robimarko@gmail.com>
Date: Sat, 21 Oct 2023 12:00:07 +0000 (+0200)
Subject: arm64: dts: qcom: ipq6018: use CPUFreq NVMEM
X-Git-Tag: v6.8-rc1~130^2~8^2~185
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=83afcf14edb9217e58837eb119da96d734a4b3b1;p=linux-block.git

arm64: dts: qcom: ipq6018: use CPUFreq NVMEM

IPQ6018 comes in multiple SKU-s and some of them dont support all of the
OPP-s that are current set, so lets utilize CPUFreq NVMEM to allow only
supported OPP-s based on the SoC dynamically.

As an example, IPQ6018 is generaly rated at 1.8GHz but some silicon only
goes up to 1.5GHz and is marked as such via an eFuse.

Signed-off-by: Robert Marko <robimarko@gmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231021120048.231239-1-robimarko@gmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---

diff --git a/arch/arm64/boot/dts/qcom/ipq6018.dtsi b/arch/arm64/boot/dts/qcom/ipq6018.dtsi
index a89b6f54d3a7..39cd6b76b4c1 100644
--- a/arch/arm64/boot/dts/qcom/ipq6018.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq6018.dtsi
@@ -96,42 +96,49 @@
 	};
 
 	cpu_opp_table: opp-table-cpu {
-		compatible = "operating-points-v2";
+		compatible = "operating-points-v2-kryo-cpu";
+		nvmem-cells = <&cpu_speed_bin>;
 		opp-shared;
 
 		opp-864000000 {
 			opp-hz = /bits/ 64 <864000000>;
 			opp-microvolt = <725000>;
+			opp-supported-hw = <0xf>;
 			clock-latency-ns = <200000>;
 		};
 
 		opp-1056000000 {
 			opp-hz = /bits/ 64 <1056000000>;
 			opp-microvolt = <787500>;
+			opp-supported-hw = <0xf>;
 			clock-latency-ns = <200000>;
 		};
 
 		opp-1320000000 {
 			opp-hz = /bits/ 64 <1320000000>;
 			opp-microvolt = <862500>;
+			opp-supported-hw = <0x3>;
 			clock-latency-ns = <200000>;
 		};
 
 		opp-1440000000 {
 			opp-hz = /bits/ 64 <1440000000>;
 			opp-microvolt = <925000>;
+			opp-supported-hw = <0x3>;
 			clock-latency-ns = <200000>;
 		};
 
 		opp-1608000000 {
 			opp-hz = /bits/ 64 <1608000000>;
 			opp-microvolt = <987500>;
+			opp-supported-hw = <0x1>;
 			clock-latency-ns = <200000>;
 		};
 
 		opp-1800000000 {
 			opp-hz = /bits/ 64 <1800000000>;
 			opp-microvolt = <1062500>;
+			opp-supported-hw = <0x1>;
 			clock-latency-ns = <200000>;
 		};
 	};
@@ -309,6 +316,11 @@
 			reg = <0x0 0x000a4000 0x0 0x2000>;
 			#address-cells = <1>;
 			#size-cells = <1>;
+
+			cpu_speed_bin: cpu-speed-bin@135 {
+				reg = <0x135 0x1>;
+				bits = <7 1>;
+			};
 		};
 
 		prng: qrng@e3000 {