linux-kernel - [PATCH v4 8/9] cpufreq: qti: Introduce cpufreq for ipq95xx

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Message-ID: <7369c6d5186d2b9b5f62a210878e9f864b57e11a.1697694811.git.quic_varada@quicinc.com>
Date:   Thu, 19 Oct 2023 14:10:42 +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>,
        Praveenkumar I <ipkumar@...eaurora.org>
Subject: [PATCH v4 8/9] cpufreq: qti: Introduce cpufreq for ipq95xx

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

Added support for ipq95xx 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.

Signed-off-by: Praveenkumar I <ipkumar@...eaurora.org>
Signed-off-by: Kathiravan T <quic_kathirav@...cinc.com>
Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
---
v2:	Simplify bin selection by tweaking the order in dts
---
 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 f43e5cd..4f794ba 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -183,6 +183,7 @@ static const struct of_device_id blocklist[] __initconst = {
 	{ .compatible = "qcom,ipq5332", },
 	{ .compatible = "qcom,ipq8064", },
 	{ .compatible = "qcom,ipq8074", },
+	{ .compatible = "qcom,ipq9574", },
 	{ .compatible = "qcom,apq8064", },
 	{ .compatible = "qcom,msm8974", },
 	{ .compatible = "qcom,msm8960", },
diff --git a/drivers/cpufreq/qcom-cpufreq-nvmem.c b/drivers/cpufreq/qcom-cpufreq-nvmem.c
index 0014909..d44be4e 100644
--- a/drivers/cpufreq/qcom-cpufreq-nvmem.c
+++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c
@@ -166,6 +166,13 @@ static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev,
 	case QCOM_ID_IPQ5300:
 		drv->versions = 1 << (unsigned int)(*speedbin);
 		break;
+	case QCOM_ID_IPQ9514:
+	case QCOM_ID_IPQ9550:
+	case QCOM_ID_IPQ9554:
+	case QCOM_ID_IPQ9570:
+	case QCOM_ID_IPQ9574:
+		drv->versions = 1 << (unsigned int)(*speedbin);
+		break;
 	default:
 		BUG();
 		break;
@@ -417,6 +424,7 @@ static const struct of_device_id qcom_cpufreq_match_list[] __initconst = {
 	{ .compatible = "qcom,ipq8064", .data = &match_data_krait },
 	{ .compatible = "qcom,ipq8074", .data = &match_data_ipq8074 },
 	{ .compatible = "qcom,apq8064", .data = &match_data_krait },
+	{ .compatible = "qcom,ipq9574", .data = &match_data_kryo },
 	{ .compatible = "qcom,msm8974", .data = &match_data_krait },
 	{ .compatible = "qcom,msm8960", .data = &match_data_krait },
 	{},
-- 
2.7.4