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: <463f01759cedef3121767d2432aa415794036ce1.1697781921.git.quic_varada@quicinc.com>
Date:   Fri, 20 Oct 2023 11:49:37 +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>,
        <sivaprak@...eaurora.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 v5 7/9] arm64: dts: qcom: ipq5332: populate the opp table based on the eFuse

IPQ53xx have different OPPs available for the CPU based on
SoC variant. This can be determined through use of an eFuse
register present in the silicon.

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

	------------------------------------------------
	Frequency	BIT2	BIT1	opp-supported-hw
			1.1GHz	1.5GHz
	------------------------------------------------
	1100000000	1	1	0x7
	1500000000	0	1	0x3
	------------------------------------------------

Signed-off-by: Kathiravan T <quic_kathirav@...cinc.com>
Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
---
v4:	Change opp-supported-hw from 0xf to 0x7 in commit log
	and DT entry.
v2:	Fix inconsistencies in comment and move it to commit log
	as suggested
	Remove opp-microvolt entries as no regulator is managed by Linux
	cpu_speed_bin -> cpu-speed-bin in node name
	Remove "nvmem-cell-names" due to dtbs_check error
---
 arch/arm64/boot/dts/qcom/ipq5332.dtsi | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/ipq5332.dtsi b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
index 4206f05..42e2e48 100644
--- a/arch/arm64/boot/dts/qcom/ipq5332.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
@@ -91,11 +91,19 @@
 	};
 
 	cpu_opp_table: opp-table-cpu {
-		compatible = "operating-points-v2";
+		compatible = "operating-points-v2-kryo-cpu";
 		opp-shared;
+		nvmem-cells = <&cpu_speed_bin>;
 
-		opp-1488000000 {
-			opp-hz = /bits/ 64 <1488000000>;
+		opp-1100000000 {
+			opp-hz = /bits/ 64 <1100000000>;
+			opp-supported-hw = <0x7>;
+			clock-latency-ns = <200000>;
+		};
+
+		opp-1500000000 {
+			opp-hz = /bits/ 64 <1500000000>;
+			opp-supported-hw = <0x3>;
 			clock-latency-ns = <200000>;
 		};
 	};
@@ -163,6 +171,11 @@
 			reg = <0x000a4000 0x721>;
 			#address-cells = <1>;
 			#size-cells = <1>;
+
+			cpu_speed_bin: cpu-speed-bin@1d {
+				reg = <0x1d 0x2>;
+				bits = <7 2>;
+			};
 		};
 
 		rng: rng@...00 {
-- 
2.7.4

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ