openwrt/target/linux/qualcommax/patches-6.1/0038-v6.7-cpufreq-qcom-nvmem-add-support-for-IPQ6018.patch
Mantas Pucka 23deb4ac90
qualcommax: add ipq60xx support
Introduce support for the Qualcomm IPQ60xx SoC. WiFi support still has
to be handled and correctly fix hence this is currently marked as
source-only to have a solid base to progress on correct support of this
and hope Upstream QUIC publish newers ath11k drivers for this SoC.

Co-developed-by: Robert Marko <robimarko@gmail.com>
Signed-off-by: Robert Marko <robimarko@gmail.com>
Signed-off-by: Mantas Pucka <mantas@8devices.com>
[ improve commit description, add SoB for Robert, make it source-only ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
2024-02-09 14:01:51 +01:00

124 lines
3.8 KiB
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From 47e161a7873b0891f4e01a69a839f6161d816ea8 Mon Sep 17 00:00:00 2001
From: Robert Marko <robimarko@gmail.com>
Date: Wed, 25 Oct 2023 14:57:57 +0530
Subject: [PATCH] cpufreq: qcom-nvmem: add support for IPQ6018
IPQ6018 SoC series comes in multiple SKU-s, and not all of them support
high frequency OPP points.
SoC itself does however have a single bit in QFPROM to indicate the CPU
speed-bin.
That bit is used to indicate frequency limit of 1.5GHz, but that alone is
not enough as IPQ6000 only goes up to 1.2GHz, but SMEM ID can be used to
limit it further.
IPQ6018 compatible is blacklisted from DT platdev as the cpufreq device
will get created by NVMEM CPUFreq driver.
Signed-off-by: Robert Marko <robimarko@gmail.com>
[ Viresh: Fixed rebase conflict. ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/cpufreq/cpufreq-dt-platdev.c | 1 +
drivers/cpufreq/qcom-cpufreq-nvmem.c | 58 ++++++++++++++++++++++++++++++++++++
2 files changed, 59 insertions(+)
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -163,6 +163,7 @@ static const struct of_device_id blockli
{ .compatible = "ti,dra7", },
{ .compatible = "ti,omap3", },
+ { .compatible = "qcom,ipq6018", },
{ .compatible = "qcom,ipq8064", },
{ .compatible = "qcom,ipq8074", },
{ .compatible = "qcom,apq8064", },
--- a/drivers/cpufreq/qcom-cpufreq-nvmem.c
+++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c
@@ -36,6 +36,8 @@ enum ipq8074_versions {
IPQ8074_ACORN_VERSION,
};
+#define IPQ6000_VERSION BIT(2)
+
struct qcom_cpufreq_drv;
struct qcom_cpufreq_match_data {
@@ -209,6 +211,57 @@ len_error:
return ret;
}
+static int qcom_cpufreq_ipq6018_name_version(struct device *cpu_dev,
+ struct nvmem_cell *speedbin_nvmem,
+ char **pvs_name,
+ struct qcom_cpufreq_drv *drv)
+{
+ u32 msm_id;
+ int ret;
+ u8 *speedbin;
+ *pvs_name = NULL;
+
+ ret = qcom_smem_get_soc_id(&msm_id);
+ if (ret)
+ return ret;
+
+ speedbin = nvmem_cell_read(speedbin_nvmem, NULL);
+ if (IS_ERR(speedbin))
+ return PTR_ERR(speedbin);
+
+ switch (msm_id) {
+ case QCOM_ID_IPQ6005:
+ case QCOM_ID_IPQ6010:
+ case QCOM_ID_IPQ6018:
+ case QCOM_ID_IPQ6028:
+ /* Fuse Value Freq BIT to set
+ * ---------------------------------
+ * 2b0 No Limit BIT(0)
+ * 2b1 1.5 GHz BIT(1)
+ */
+ drv->versions = 1 << (unsigned int)(*speedbin);
+ break;
+ case QCOM_ID_IPQ6000:
+ /*
+ * IPQ6018 family only has one bit to advertise the CPU
+ * speed-bin, but that is not enough for IPQ6000 which
+ * is only rated up to 1.2GHz.
+ * So for IPQ6000 manually set BIT(2) based on SMEM ID.
+ */
+ drv->versions = IPQ6000_VERSION;
+ break;
+ default:
+ dev_err(cpu_dev,
+ "SoC ID %u is not part of IPQ6018 family, limiting to 1.2GHz!\n",
+ msm_id);
+ drv->versions = IPQ6000_VERSION;
+ break;
+ }
+
+ kfree(speedbin);
+ return 0;
+}
+
static int qcom_cpufreq_ipq8074_name_version(struct device *cpu_dev,
struct nvmem_cell *speedbin_nvmem,
char **pvs_name,
@@ -265,6 +318,10 @@ static const struct qcom_cpufreq_match_d
.get_version = qcom_cpufreq_ipq8074_name_version,
};
+static const struct qcom_cpufreq_match_data match_data_ipq6018 = {
+ .get_version = qcom_cpufreq_ipq6018_name_version,
+};
+
static int qcom_cpufreq_probe(struct platform_device *pdev)
{
struct qcom_cpufreq_drv *drv;
@@ -409,6 +466,7 @@ static const struct of_device_id qcom_cp
{ .compatible = "qcom,apq8096", .data = &match_data_kryo },
{ .compatible = "qcom,msm8996", .data = &match_data_kryo },
{ .compatible = "qcom,qcs404", .data = &match_data_qcs404 },
+ { .compatible = "qcom,ipq6018", .data = &match_data_ipq6018 },
{ .compatible = "qcom,ipq8064", .data = &match_data_krait },
{ .compatible = "qcom,ipq8074", .data = &match_data_ipq8074 },
{ .compatible = "qcom,apq8064", .data = &match_data_krait },