31  * Mediatek SoCs has two voltage inputs, Vproc and Vsram. In some cases the two
33  * 100mV < Vsram - Vproc < 200mV
84 	int pre_vproc, pre_vsram, new_vsram, vsram, vproc, ret;  in mtk_cpufreq_voltage_tracking()  local
96 		dev_err(info->cpu_dev, "invalid Vsram value: %d\n", pre_vsram);  in mtk_cpufreq_voltage_tracking()
105 			vsram = clamp(pre_vproc + soc_data->max_volt_shift,  in mtk_cpufreq_voltage_tracking()
107 			ret = regulator_set_voltage(sram_reg, vsram,  in mtk_cpufreq_voltage_tracking()
113 			if (vsram == soc_data->sram_max_volt ||  in mtk_cpufreq_voltage_tracking()
117 				vproc = vsram - soc_data->min_volt_shift;  in mtk_cpufreq_voltage_tracking()
135 				vsram = new_vsram;  in mtk_cpufreq_voltage_tracking()
137 				vsram = max(new_vsram,  in mtk_cpufreq_voltage_tracking()
140 			ret = regulator_set_voltage(sram_reg, vsram,  in mtk_cpufreq_voltage_tracking()
150 		pre_vsram = vsram;  in mtk_cpufreq_voltage_tracking()
157 	} while (vproc != new_vproc || vsram != new_vsram);  in mtk_cpufreq_voltage_tracking()
447 			dev_err_probe(cpu_dev, ret, "cpu%d: failed to enable vsram\n", cpu);  in mtk_cpu_dvfs_info_init()