thermal_cpufreq.c

 1// SPDX-License-Identifier: GPL-2.0-only
 2#include <linux/acpi.h>
 3#include <linux/export.h>
 4
 5#include "../internal.h"
 6
 7#define SMCCC_SOC_ID_T241      0x036b0241
 8
 9int acpi_arch_thermal_cpufreq_pctg(void)
10{
11	s32 soc_id = arm_smccc_get_soc_id_version();
12
13	/*
14	 * Check JEP106 code for NVIDIA Tegra241 chip (036b:0241) and
15	 * reduce the CPUFREQ Thermal reduction percentage to 5%.
16	 */
17	if (soc_id == SMCCC_SOC_ID_T241)
18		return 5;
19
20	return 0;
21}
22EXPORT_SYMBOL_GPL(acpi_arch_thermal_cpufreq_pctg);