aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/ipq806x/patches-5.10/098-3-add-fab-scaling-support-with-cpufreq.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/ipq806x/patches-5.10/098-3-add-fab-scaling-support-with-cpufreq.patch')
-rw-r--r--target/linux/ipq806x/patches-5.10/098-3-add-fab-scaling-support-with-cpufreq.patch243
1 files changed, 0 insertions, 243 deletions
diff --git a/target/linux/ipq806x/patches-5.10/098-3-add-fab-scaling-support-with-cpufreq.patch b/target/linux/ipq806x/patches-5.10/098-3-add-fab-scaling-support-with-cpufreq.patch
deleted file mode 100644
index 8ce3f062cf..0000000000
--- a/target/linux/ipq806x/patches-5.10/098-3-add-fab-scaling-support-with-cpufreq.patch
+++ /dev/null
@@ -1,243 +0,0 @@
---- a/drivers/clk/qcom/Makefile
-+++ b/drivers/clk/qcom/Makefile
-@@ -15,6 +15,7 @@ clk-qcom-$(CONFIG_KRAIT_CLOCKS) += clk-k
- clk-qcom-y += clk-hfpll.o
- clk-qcom-y += reset.o
- clk-qcom-$(CONFIG_QCOM_GDSC) += gdsc.o
-+clk-qcom-y += fab_scaling.o
-
- # Keep alphabetically sorted by config
- obj-$(CONFIG_APQ_GCC_8084) += gcc-apq8084.o
---- /dev/null
-+++ b/drivers/clk/qcom/fab_scaling.c
-@@ -0,0 +1,172 @@
-+/*
-+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
-+ *
-+ * Permission to use, copy, modify, and/or distribute this software for any
-+ * purpose with or without fee is hereby granted, provided that the above
-+ * copyright notice and this permission notice appear in all copies.
-+ *
-+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/init.h>
-+#include <linux/module.h>
-+#include <linux/platform_device.h>
-+#include <linux/err.h>
-+#include <linux/io.h>
-+#include <linux/of.h>
-+#include <linux/of_device.h>
-+#include <linux/clk.h>
-+#include <linux/clk-provider.h>
-+#include <linux/slab.h>
-+#include <linux/fab_scaling.h>
-+
-+struct qcom_fab_scaling_data {
-+ u32 fab_freq_high;
-+ u32 fab_freq_nominal;
-+ u32 cpu_freq_threshold;
-+ struct clk *apps_fab_clk;
-+ struct clk *ddr_fab_clk;
-+};
-+
-+static struct qcom_fab_scaling_data *drv_data;
-+
-+int scale_fabrics(unsigned long max_cpu_freq)
-+{
-+ struct clk *apps_fab_clk = drv_data->apps_fab_clk,
-+ *ddr_fab_clk = drv_data->ddr_fab_clk;
-+ unsigned long target_freq, cur_freq;
-+ int ret;
-+
-+ /* Skip fab scaling if the driver is not ready */
-+ if (!apps_fab_clk || !ddr_fab_clk)
-+ return 0;
-+
-+ if (max_cpu_freq > drv_data->cpu_freq_threshold)
-+ target_freq = drv_data->fab_freq_high;
-+ else
-+ target_freq = drv_data->fab_freq_nominal;
-+
-+ cur_freq = clk_get_rate(ddr_fab_clk);
-+
-+ if (target_freq != cur_freq) {
-+ ret = clk_set_rate(apps_fab_clk, target_freq);
-+ if (ret)
-+ return ret;
-+ ret = clk_set_rate(ddr_fab_clk, target_freq);
-+ if (ret)
-+ return ret;
-+ }
-+
-+ return 0;
-+}
-+EXPORT_SYMBOL(scale_fabrics);
-+
-+static int ipq806x_fab_scaling_probe(struct platform_device *pdev)
-+{
-+ struct device_node *np = pdev->dev.of_node;
-+ struct clk *apps_fab_clk, *ddr_fab_clk;
-+ int ret;
-+
-+ if (!np)
-+ return -ENODEV;
-+
-+ drv_data = kzalloc(sizeof(*drv_data), GFP_KERNEL);
-+ if (!drv_data)
-+ return -ENOMEM;
-+
-+ if (of_property_read_u32(np, "fab_freq_high", &drv_data->fab_freq_high)) {
-+ pr_err("FABRICS turbo freq not found. Using defaults...\n");
-+ drv_data->fab_freq_high = 533000000;
-+ }
-+
-+ if (of_property_read_u32(np, "fab_freq_nominal", &drv_data->fab_freq_nominal)) {
-+ pr_err("FABRICS nominal freq not found. Using defaults...\n");
-+ drv_data->fab_freq_nominal = 400000000;
-+ }
-+
-+ if (of_property_read_u32(np, "cpu_freq_threshold", &drv_data->cpu_freq_threshold)) {
-+ pr_err("FABRICS cpu freq threshold not found. Using defaults...\n");
-+ drv_data->cpu_freq_threshold = 1000000000;
-+ }
-+
-+ apps_fab_clk = devm_clk_get(&pdev->dev, "apps-fab-clk");
-+ ret = PTR_ERR_OR_ZERO(apps_fab_clk);
-+ if (ret) {
-+ /*
-+ * If apps fab clk node is present, but clock is not yet
-+ * registered, we should try defering probe.
-+ */
-+ if (ret != -EPROBE_DEFER) {
-+ pr_err("Failed to get APPS FABRIC clock: %d\n", ret);
-+ ret = -ENODEV;
-+ }
-+ goto err;
-+ }
-+
-+ clk_prepare_enable(apps_fab_clk);
-+ clk_set_rate(apps_fab_clk, drv_data->fab_freq_high);
-+ drv_data->apps_fab_clk = apps_fab_clk;
-+
-+ ddr_fab_clk = devm_clk_get(&pdev->dev, "ddr-fab-clk");
-+ ret = PTR_ERR_OR_ZERO(ddr_fab_clk);
-+ if (ret) {
-+ /*
-+ * If ddr fab clk node is present, but clock is not yet
-+ * registered, we should try defering probe.
-+ */
-+ if (ret != -EPROBE_DEFER) {
-+ pr_err("Failed to get DDR FABRIC clock: %d\n", ret);
-+ ddr_fab_clk = NULL;
-+ ret = -ENODEV;
-+ }
-+ goto err;
-+ }
-+
-+ clk_prepare_enable(ddr_fab_clk);
-+ clk_set_rate(ddr_fab_clk, drv_data->fab_freq_high);
-+ drv_data->ddr_fab_clk = ddr_fab_clk;
-+
-+ return 0;
-+err:
-+ kfree(drv_data);
-+ return ret;
-+}
-+
-+static int ipq806x_fab_scaling_remove(struct platform_device *pdev)
-+{
-+ kfree(drv_data);
-+ return 0;
-+}
-+
-+static const struct of_device_id fab_scaling_ipq806x_match_table[] = {
-+ { .compatible = "qcom,fab-scaling" },
-+ { }
-+};
-+
-+static struct platform_driver fab_scaling_ipq806x_driver = {
-+ .probe = ipq806x_fab_scaling_probe,
-+ .remove = ipq806x_fab_scaling_remove,
-+ .driver = {
-+ .name = "fab-scaling",
-+ .of_match_table = fab_scaling_ipq806x_match_table,
-+ },
-+};
-+
-+static int __init fab_scaling_ipq806x_init(void)
-+{
-+ return platform_driver_register(&fab_scaling_ipq806x_driver);
-+}
-+late_initcall(fab_scaling_ipq806x_init);
-+
-+static void __exit fab_scaling_ipq806x_exit(void)
-+{
-+ platform_driver_unregister(&fab_scaling_ipq806x_driver);
-+}
-+module_exit(fab_scaling_ipq806x_exit);
---- /dev/null
-+++ b/include/linux/fab_scaling.h
-@@ -0,0 +1,31 @@
-+/*
-+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
-+ *
-+ * Permission to use, copy, modify, and/or distribute this software for any
-+ * purpose with or without fee is hereby granted, provided that the above
-+ * copyright notice and this permission notice appear in all copies.
-+ *
-+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-+ */
-+
-+
-+#ifndef __FAB_SCALING_H
-+#define __FAB_SCALING_H
-+
-+/**
-+ * scale_fabrics - Scale DDR and APPS FABRICS
-+ *
-+ * This function monitors all the registered clocks and does APPS
-+ * and DDR FABRIC scaling based on the idle frequencies with which
-+ * it was registered.
-+ *
-+ */
-+int scale_fabrics(unsigned long max_cpu_freq);
-+
-+#endif
---- a/drivers/cpufreq/qcom-cpufreq-krait.c
-+++ b/drivers/cpufreq/qcom-cpufreq-krait.c
-@@ -15,6 +15,7 @@
- #include <linux/regulator/consumer.h>
- #include <linux/slab.h>
- #include <linux/thermal.h>
-+#include <linux/fab_scaling.h>
-
- #include "cpufreq-dt.h"
-
-@@ -68,6 +69,13 @@ static int set_target(struct cpufreq_pol
- return -EINVAL;
- }
-
-+ /*
-+ * Scale fabrics with max freq across all cores
-+ */
-+ ret = scale_fabrics(target_freq);
-+ if (ret)
-+ return ret;
-+
- opp = dev_pm_opp_find_level_exact(&l2_pdev->dev, level);
- if (IS_ERR(opp)) {
- dev_err(&l2_pdev->dev,
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-19 16:08:58 +0000