Commit 1fd51c73 authored by Nick Chan's avatar Nick Chan Committed by Sven Peter
Browse files

arm64: dts: apple: Add cpufreq nodes for S8000/S8003 



Add cpufreq nodes for the two variants of Apple A9 SoC. The difference is
that S8000 is slower than S8003 in state transitions.

Change the copyright information in s8000.dtsi and s8003.dtsi as well
since these are now essentially new files with the original content now
being in s800-0-3.dtsi.

Signed-off-by: default avatarNick Chan <towinchenmi@gmail.com>
Reviewed-by: default avatarNeal Gompa <neal@gompa.dev>
Signed-off-by: default avatarSven Peter <sven@svenpeter.dev>
parent 1b57d5bc

arch/arm64/boot/dts/apple/s800-0-3.dtsi

+10 −0
Original line number Diff line number Diff line
@@ -32,6 +32,8 @@ cpu0: cpu@0 { 
			compatible = "apple,twister";

			reg = <0x0 0x0>;

			cpu-release-addr = <0 0>; /* To be filled in by loader */

			operating-points-v2 = <&twister_opp>;

			performance-domains = <&cpufreq>;

			enable-method = "spin-table";

			device_type = "cpu";

		};
@@ -40,6 +42,8 @@ cpu1: cpu@1 { 
			compatible = "apple,twister";

			reg = <0x0 0x1>;

			cpu-release-addr = <0 0>; /* To be filled in by loader */

			operating-points-v2 = <&twister_opp>;

			performance-domains = <&cpufreq>;

			enable-method = "spin-table";

			device_type = "cpu";

		};
@@ -52,6 +56,12 @@ soc { 
		nonposted-mmio;

		ranges;



		cpufreq: performance-controller@202220000 {

			compatible = "apple,s8000-cluster-cpufreq", "apple,t8103-cluster-cpufreq", "apple,cluster-cpufreq";

			reg = <0x2 0x02220000 0 0x1000>;

			#performance-domain-cells = <0>;

		};



		serial0: serial@20a0c0000 {

			compatible = "apple,s5l-uart";

			reg = <0x2 0x0a0c0000 0x0 0x4000>;

arch/arm64/boot/dts/apple/s8000.dtsi

+52 −1
Original line number Diff line number Diff line
@@ -4,11 +4,62 @@ 
 *

 * Other names: H8P, "Maui"

 *

 * Copyright (c) 2022, Konrad Dybcio <konradybcio@kernel.org>

 * Copyright (c) 2024, Nick Chan <towinchenmi@gmail.com>

 */



#include "s800-0-3.dtsi"



/ {

	twister_opp: opp-table {

		compatible = "operating-points-v2";



		opp01 {

			opp-hz = /bits/ 64 <300000000>;

			opp-level = <1>;

			clock-latency-ns = <650>;

		};

		opp02 {

			opp-hz = /bits/ 64 <396000000>;

			opp-level = <2>;

			clock-latency-ns = <75000>;

		};

		opp03 {

			opp-hz = /bits/ 64 <600000000>;

			opp-level = <3>;

			clock-latency-ns = <27000>;

		};

		opp04 {

			opp-hz = /bits/ 64 <912000000>;

			opp-level = <4>;

			clock-latency-ns = <32000>;

		};

		opp05 {

			opp-hz = /bits/ 64 <1200000000>;

			opp-level = <5>;

			clock-latency-ns = <35000>;

		};

		opp06 {

			opp-hz = /bits/ 64 <1512000000>;

			opp-level = <6>;

			clock-latency-ns = <45000>;

		};

		opp07 {

			opp-hz = /bits/ 64 <1800000000>;

			opp-level = <7>;

			clock-latency-ns = <58000>;

		};

#if 0

		/* Not available until CPU deep sleep is implemented */

		opp08 {

			opp-hz = /bits/ 64 <1844000000>;

			opp-level = <8>;

			clock-latency-ns = <58000>;

			turbo-mode;

		};

#endif

	};

};



/*

 * The A9 was made by two separate fabs on two different process

 * nodes: Samsung made the S8000 (APL0898) on 14nm and TSMC made

arch/arm64/boot/dts/apple/s8003.dtsi

+52 −1
Original line number Diff line number Diff line
@@ -4,11 +4,62 @@ 
 *

 * Other names: H8P, "Malta"

 *

 * Copyright (c) 2022, Konrad Dybcio <konradybcio@kernel.org>

 * Copyright (c) 2024, Nick Chan <towinchenmi@gmail.com>

 */



#include "s800-0-3.dtsi"



/ {

	twister_opp: opp-table {

		compatible = "operating-points-v2";



		opp01 {

			opp-hz = /bits/ 64 <300000000>;

			opp-level = <1>;

			clock-latency-ns = <500>;

		};

		opp02 {

			opp-hz = /bits/ 64 <396000000>;

			opp-level = <2>;

			clock-latency-ns = <45000>;

		};

		opp03 {

			opp-hz = /bits/ 64 <600000000>;

			opp-level = <3>;

			clock-latency-ns = <22000>;

		};

		opp04 {

			opp-hz = /bits/ 64 <912000000>;

			opp-level = <4>;

			clock-latency-ns = <25000>;

		};

		opp05 {

			opp-hz = /bits/ 64 <1200000000>;

			opp-level = <5>;

			clock-latency-ns = <28000>;

		};

		opp06 {

			opp-hz = /bits/ 64 <1512000000>;

			opp-level = <6>;

			clock-latency-ns = <35000>;

		};

		opp07 {

			opp-hz = /bits/ 64 <1800000000>;

			opp-level = <7>;

			clock-latency-ns = <38000>;

		};

#if 0

		/* Not available until CPU deep sleep is implemented */

		opp08 {

			opp-hz = /bits/ 64 <1844000000>;

			opp-level = <8>;

			clock-latency-ns = <38000>;

			turbo-mode;

		};

#endif

	};

};



/*

 * The A9 was made by two separate fabs on two different process

 * nodes: Samsung made the S8000 (APL0898) on 14nm and TSMC made