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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 10:15:33 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 10:15:33 +0000
commita097cf30108c0151cb2684afd962bd2678ff97d7 (patch)
treede1ac8afc7248eec4b2fb60496b8e9273452d9f7 /drivers/cpufreq/mediatek-cpufreq-hw.c
parentAdding upstream version 6.1.82. (diff)
downloadlinux-a097cf30108c0151cb2684afd962bd2678ff97d7.tar.xz
linux-a097cf30108c0151cb2684afd962bd2678ff97d7.zip
Adding upstream version 6.1.85.upstream/6.1.85
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/cpufreq/mediatek-cpufreq-hw.c')
-rw-r--r--drivers/cpufreq/mediatek-cpufreq-hw.c22
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/cpufreq/mediatek-cpufreq-hw.c b/drivers/cpufreq/mediatek-cpufreq-hw.c
index f0e0a35c7..7f326bb5f 100644
--- a/drivers/cpufreq/mediatek-cpufreq-hw.c
+++ b/drivers/cpufreq/mediatek-cpufreq-hw.c
@@ -10,8 +10,10 @@
#include <linux/iopoll.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/of_address.h>
+#include <linux/of.h>
#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#define LUT_MAX_ENTRIES 32U
@@ -295,7 +297,23 @@ static struct cpufreq_driver cpufreq_mtk_hw_driver = {
static int mtk_cpufreq_hw_driver_probe(struct platform_device *pdev)
{
const void *data;
- int ret;
+ int ret, cpu;
+ struct device *cpu_dev;
+ struct regulator *cpu_reg;
+
+ /* Make sure that all CPU supplies are available before proceeding. */
+ for_each_possible_cpu(cpu) {
+ cpu_dev = get_cpu_device(cpu);
+ if (!cpu_dev)
+ return dev_err_probe(&pdev->dev, -EPROBE_DEFER,
+ "Failed to get cpu%d device\n", cpu);
+
+ cpu_reg = devm_regulator_get(cpu_dev, "cpu");
+ if (IS_ERR(cpu_reg))
+ return dev_err_probe(&pdev->dev, PTR_ERR(cpu_reg),
+ "CPU%d regulator get failed\n", cpu);
+ }
+
data = of_device_get_match_data(&pdev->dev);
if (!data)