lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <5d1bf44de58db10a20d1b116c7fd4b073d01271e.1697600121.git.quic_varada@quicinc.com>
Date:   Wed, 18 Oct 2023 14:59:21 +0530
From:   Varadarajan Narayanan <quic_varada@...cinc.com>
To:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <mturquette@...libre.com>, <sboyd@...nel.org>, <rafael@...nel.org>,
        <viresh.kumar@...aro.org>, <ilia.lin@...nel.org>,
        <quic_kathirav@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-clk@...r.kernel.org>, <linux-pm@...r.kernel.org>
CC:     Varadarajan Narayanan <quic_varada@...cinc.com>
Subject: [PATCH v3 8/8] arm64: dts: qcom: ipq9574: populate the opp table based on the eFuse

IPQ95xx SoCs have different OPPs available for the CPU based on
SoC variant. This can be determined from an eFuse register
present in the silicon.

Add support to read the eFuse and populate the OPPs based on it.

Frequency	1.2GHz	1.8GHz	1.5GHz	No	opp-supported-hw
					Limit
------------------------------------------------------------
936000000	1	1	1	1	0xf
1104000000	1	1	1	1	0xf
1200000000	1	1	1	1	0xf
1416000000	0	1	1	1	0x7
1488000000	0	1	1	1	0x7
1800000000	0	1	0	1	0x5
2208000000	0	0	0	1	0x1
-----------------------------------------------------------

Signed-off-by: Kathiravan T <quic_kathirav@...cinc.com>
Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
---
v2:	cpu_speed_bin -> cpu-speed-bin in node name
	Move comment to commit log
---
 arch/arm64/boot/dts/qcom/ipq9574.dtsi | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
index cc84f25..5f83ee4 100644
--- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
@@ -106,42 +106,56 @@
 	};
 
 	cpu_opp_table: opp-table-cpu {
-		compatible = "operating-points-v2";
+		compatible = "operating-points-v2-kryo-cpu";
 		opp-shared;
+		nvmem-cells = <&cpu_speed_bin>;
 
 		opp-936000000 {
 			opp-hz = /bits/ 64 <936000000>;
 			opp-microvolt = <725000>;
+			opp-supported-hw = <0xf>;
 			clock-latency-ns = <200000>;
 		};
 
 		opp-1104000000 {
 			opp-hz = /bits/ 64 <1104000000>;
 			opp-microvolt = <787500>;
+			opp-supported-hw = <0xf>;
+			clock-latency-ns = <200000>;
+		};
+
+		opp-1200000000 {
+			opp-hz = /bits/ 64 <1200000000>;
+			opp-microvolt = <862500>;
+			opp-supported-hw = <0xf>;
 			clock-latency-ns = <200000>;
 		};
 
 		opp-1416000000 {
 			opp-hz = /bits/ 64 <1416000000>;
 			opp-microvolt = <862500>;
+			opp-supported-hw = <0x7>;
 			clock-latency-ns = <200000>;
 		};
 
 		opp-1488000000 {
 			opp-hz = /bits/ 64 <1488000000>;
 			opp-microvolt = <925000>;
+			opp-supported-hw = <0x7>;
 			clock-latency-ns = <200000>;
 		};
 
 		opp-1800000000 {
 			opp-hz = /bits/ 64 <1800000000>;
 			opp-microvolt = <987500>;
+			opp-supported-hw = <0x5>;
 			clock-latency-ns = <200000>;
 		};
 
 		opp-2208000000 {
 			opp-hz = /bits/ 64 <2208000000>;
 			opp-microvolt = <1062500>;
+			opp-supported-hw = <0x1>;
 			clock-latency-ns = <200000>;
 		};
 	};
@@ -223,6 +237,11 @@
 			reg = <0x000a4000 0x5a1>;
 			#address-cells = <1>;
 			#size-cells = <1>;
+
+			cpu_speed_bin: cpu-speed-bin@15 {
+				reg = <0x15 0x2>;
+				bits = <7 2>;
+			};
 		};
 
 		cryptobam: dma-controller@...000 {
-- 
2.7.4

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ