linux-kernel - [PATCH 1/2] cpufreq: tegra186: Set target frequency for all cpus in policy

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Message-Id: <20250826-tegra186-cpufreq-fixes-v1-1-97f98d3e0adb@gmail.com>
Date: Tue, 26 Aug 2025 15:15:59 -0500
From: Aaron Kling via B4 Relay <devnull+webgeek1234.gmail.com@...nel.org>
To: "Rafael J. Wysocki" <rafael@...nel.org>, 
 Viresh Kumar <viresh.kumar@...aro.org>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Jonathan Hunter <jonathanh@...dia.com>, Aaron Kling <luceoscutum@...il.com>, 
 Sumit Gupta <sumitg@...dia.com>
Cc: Thierry Reding <treding@...dia.com>, linux-pm@...r.kernel.org, 
 linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Aaron Kling <webgeek1234@...il.com>
Subject: [PATCH 1/2] cpufreq: tegra186: Set target frequency for all cpus
 in policy

From: Aaron Kling <webgeek1234@...il.com>

The original commit set all cores in a cluster to a shared policy, but
did not update set_target to apply a frequency change to all cores for
the policy. This caused most cores to remain stuck at their boot
frequency.

Fixes: be4ae8c19492 ("cpufreq: tegra186: Share policy per cluster")
Signed-off-by: Aaron Kling <webgeek1234@...il.com>
---
 drivers/cpufreq/tegra186-cpufreq.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/cpufreq/tegra186-cpufreq.c b/drivers/cpufreq/tegra186-cpufreq.c
index cbabb726c6645d2e5f1857a47e5643c8552d1933..6c394b429b6182faffabf222e5af501393dbbba9 100644
--- a/drivers/cpufreq/tegra186-cpufreq.c
+++ b/drivers/cpufreq/tegra186-cpufreq.c
@@ -93,10 +93,14 @@ static int tegra186_cpufreq_set_target(struct cpufreq_policy *policy,
 {
 	struct tegra186_cpufreq_data *data = cpufreq_get_driver_data();
 	struct cpufreq_frequency_table *tbl = policy->freq_table + index;
-	unsigned int edvd_offset = data->cpus[policy->cpu].edvd_offset;
+	unsigned int edvd_offset;
 	u32 edvd_val = tbl->driver_data;
+	u32 cpu;

-	writel(edvd_val, data->regs + edvd_offset);
+	for_each_cpu(cpu, policy->cpus) {
+		edvd_offset = data->cpus[cpu].edvd_offset;
+		writel(edvd_val, data->regs + edvd_offset);
+	}

 	return 0;
 }

-- 
2.50.1