linux-kernel - [PATCH v2 3/4] cpufreq: qcom-nvmem: Enable cpufreq for ipq5424

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Message-ID: <20250723110815.2865403-4-quic_varada@quicinc.com>
Date: Wed, 23 Jul 2025 16:38:14 +0530
From: Varadarajan Narayanan <quic_varada@...cinc.com>
To: <andersson@...nel.org>, <mturquette@...libre.com>, <sboyd@...nel.org>,
        <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <konradybcio@...nel.org>, <rafael@...nel.org>,
        <viresh.kumar@...aro.org>, <ilia.lin@...nel.org>, <djakov@...nel.org>,
        <quic_srichara@...cinc.com>, <quic_mdalam@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-pm@...r.kernel.org>
CC: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Varadarajan Narayanan
	<quic_varada@...cinc.com>
Subject: [PATCH v2 3/4] cpufreq: qcom-nvmem: Enable cpufreq for ipq5424

From: Md Sadre Alam <quic_mdalam@...cinc.com>

IPQ5424 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.

Added support for ipq5424 on nvmem driver which helps to
determine OPPs at runtime based on the eFuse register which
has the CPU frequency limits. opp-supported-hw dt binding
can be used to indicate the available OPPs for each limit.

nvmem driver also creates the "cpufreq-dt" platform_device after
passing the version matching data to the OPP framework so that the
cpufreq-dt handles the actual cpufreq implementation.

Signed-off-by: Md Sadre Alam <quic_mdalam@...cinc.com>
Signed-off-by: Sricharan Ramabadhran <quic_srichara@...cinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
[ Changed '!=' based check to '==' based check ]
Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
---
v2: Add Reviewed-by: Konrad
    Change speed bin check to == instead of !=
--
 drivers/cpufreq/cpufreq-dt-platdev.c | 1 +
 drivers/cpufreq/qcom-cpufreq-nvmem.c | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index 015dd393eaba..de1769649368 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -191,6 +191,7 @@ static const struct of_device_id blocklist[] __initconst = {
 	{ .compatible = "ti,am62p5", },
 
 	{ .compatible = "qcom,ipq5332", },
+	{ .compatible = "qcom,ipq5424", },
 	{ .compatible = "qcom,ipq6018", },
 	{ .compatible = "qcom,ipq8064", },
 	{ .compatible = "qcom,ipq8074", },
diff --git a/drivers/cpufreq/qcom-cpufreq-nvmem.c b/drivers/cpufreq/qcom-cpufreq-nvmem.c
index 54f8117103c8..765a5bb81829 100644
--- a/drivers/cpufreq/qcom-cpufreq-nvmem.c
+++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c
@@ -200,6 +200,10 @@ static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev,
 	case QCOM_ID_IPQ9574:
 		drv->versions = 1 << (unsigned int)(*speedbin);
 		break;
+	case QCOM_ID_IPQ5424:
+	case QCOM_ID_IPQ5404:
+		drv->versions = (*speedbin == 0x3b) ? BIT(1) : BIT(0);
+		break;
 	case QCOM_ID_MSM8996SG:
 	case QCOM_ID_APQ8096SG:
 		drv->versions = 1 << ((unsigned int)(*speedbin) + 4);
@@ -591,6 +595,7 @@ static const struct of_device_id qcom_cpufreq_match_list[] __initconst __maybe_u
 	{ .compatible = "qcom,msm8996", .data = &match_data_kryo },
 	{ .compatible = "qcom,qcs404", .data = &match_data_qcs404 },
 	{ .compatible = "qcom,ipq5332", .data = &match_data_kryo },
+	{ .compatible = "qcom,ipq5424", .data = &match_data_kryo },
 	{ .compatible = "qcom,ipq6018", .data = &match_data_ipq6018 },
 	{ .compatible = "qcom,ipq8064", .data = &match_data_ipq8064 },
 	{ .compatible = "qcom,ipq8074", .data = &match_data_ipq8074 },
-- 
2.34.1