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From:   Varadarajan Narayanan <quic_varada@quicinc.com>
To:     <agross@kernel.org>, <andersson@kernel.org>,
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        <sivaprak@codeaurora.org>, <quic_kathirav@quicinc.com>,
        <linux-arm-msm@vger.kernel.org>, <devicetree@vger.kernel.org>,
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        <linux-pm@vger.kernel.org>
CC:     Varadarajan Narayanan <quic_varada@quicinc.com>
Subject: [PATCH v4 6/9] cpufreq: qti: Enable cpufreq for ipq53xx
Date:   Thu, 19 Oct 2023 14:10:40 +0530
Message-ID: <c7bfa2233ce4bbdc326e8aa1967cc5efd1f89932.1697694811.git.quic_varada@quicinc.com>
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References: <cover.1697694811.git.quic_varada@quicinc.com>
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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.

Added support for ipq53xx 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.

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Kathiravan T <quic_kathirav@quicinc.com>
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
---
v2:	Move IPQ53xx after APQ8096SG
---
 drivers/cpufreq/cpufreq-dt-platdev.c | 1 +
 drivers/cpufreq/qcom-cpufreq-nvmem.c | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index 675da7f..f43e5cd 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -180,6 +180,7 @@ static const struct of_device_id blocklist[] __initconst = {
 	{ .compatible = "ti,am62a7", },
 	{ .compatible = "ti,am62p5", },
 
+	{ .compatible = "qcom,ipq5332", },
 	{ .compatible = "qcom,ipq8064", },
 	{ .compatible = "qcom,ipq8074", },
 	{ .compatible = "qcom,apq8064", },
diff --git a/drivers/cpufreq/qcom-cpufreq-nvmem.c b/drivers/cpufreq/qcom-cpufreq-nvmem.c
index 3fa1264..0014909 100644
--- a/drivers/cpufreq/qcom-cpufreq-nvmem.c
+++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c
@@ -159,6 +159,13 @@ static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev,
 	case QCOM_ID_APQ8096SG:
 		drv->versions = 1 << ((unsigned int)(*speedbin) + 4);
 		break;
+	case QCOM_ID_IPQ5332:
+	case QCOM_ID_IPQ5322:
+	case QCOM_ID_IPQ5312:
+	case QCOM_ID_IPQ5302:
+	case QCOM_ID_IPQ5300:
+		drv->versions = 1 << (unsigned int)(*speedbin);
+		break;
 	default:
 		BUG();
 		break;
@@ -406,6 +413,7 @@ static const struct of_device_id qcom_cpufreq_match_list[] __initconst = {
 	{ .compatible = "qcom,apq8096", .data = &match_data_kryo },
 	{ .compatible = "qcom,msm8996", .data = &match_data_kryo },
 	{ .compatible = "qcom,qcs404", .data = &match_data_qcs404 },
+	{ .compatible = "qcom,ipq5332", .data = &match_data_kryo },
 	{ .compatible = "qcom,ipq8064", .data = &match_data_krait },
 	{ .compatible = "qcom,ipq8074", .data = &match_data_ipq8074 },
 	{ .compatible = "qcom,apq8064", .data = &match_data_krait },
-- 
2.7.4