linux-kernel - [PATCH AUTOSEL 6.6 100/294] cpufreq: tegra186: Share policy per cluster

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Message-Id: <20250505225634.2688578-100-sashal@kernel.org>
Date: Mon,  5 May 2025 18:53:20 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Aaron Kling <luceoscutum@...il.com>,
	Sumit Gupta <sumitg@...dia.com>,
	Thierry Reding <treding@...dia.com>,
	Aaron Kling <webgeek1234@...il.com>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Sasha Levin <sashal@...nel.org>,
	rafael@...nel.org,
	thierry.reding@...il.com,
	jonathanh@...dia.com,
	linux-pm@...r.kernel.org,
	linux-tegra@...r.kernel.org
Subject: [PATCH AUTOSEL 6.6 100/294] cpufreq: tegra186: Share policy per cluster

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

[ Upstream commit be4ae8c19492cd6d5de61ccb34ffb3f5ede5eec8 ]

This functionally brings tegra186 in line with tegra210 and tegra194,
sharing a cpufreq policy between all cores in a cluster.

Reviewed-by: Sumit Gupta <sumitg@...dia.com>
Acked-by: Thierry Reding <treding@...dia.com>
Signed-off-by: Aaron Kling <webgeek1234@...il.com>
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/cpufreq/tegra186-cpufreq.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/cpufreq/tegra186-cpufreq.c b/drivers/cpufreq/tegra186-cpufreq.c
index 7b8fcfa55038b..4e5b6f9a56d1b 100644
--- a/drivers/cpufreq/tegra186-cpufreq.c
+++ b/drivers/cpufreq/tegra186-cpufreq.c
@@ -73,11 +73,18 @@ static int tegra186_cpufreq_init(struct cpufreq_policy *policy)
 {
 	struct tegra186_cpufreq_data *data = cpufreq_get_driver_data();
 	unsigned int cluster = data->cpus[policy->cpu].bpmp_cluster_id;
+	u32 cpu;
 
 	policy->freq_table = data->clusters[cluster].table;
 	policy->cpuinfo.transition_latency = 300 * 1000;
 	policy->driver_data = NULL;
 
+	/* set same policy for all cpus in a cluster */
+	for (cpu = 0; cpu < ARRAY_SIZE(tegra186_cpus); cpu++) {
+		if (data->cpus[cpu].bpmp_cluster_id == cluster)
+			cpumask_set_cpu(cpu, policy->cpus);
+	}
+
 	return 0;
 }
 
-- 
2.39.5