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

Sricharan R
2025-01-27T09:32:04Z

From: Md Sadre Alam <quic_mdalam@quicinc.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@quicinc.com>
Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
---
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 9c198bd4f7e9..4045bc3ce805 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -187,6 +187,7 @@ 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 3a8ed723a23e..102f7f1b031c 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(0) : BIT(1);
+ 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