76 lines
2.3 KiB
Diff
76 lines
2.3 KiB
Diff
diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c
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index f2e491b25b07..432368707ea6 100644
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--- a/drivers/cpufreq/mediatek-cpufreq.c
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+++ b/drivers/cpufreq/mediatek-cpufreq.c
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@@ -350,6 +350,11 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
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ret = PTR_ERR(proc_reg);
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goto out_free_resources;
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}
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+ ret = regulator_enable(proc_reg);
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+ if (ret) {
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+ pr_warn("enable vproc for cpu%d fail\n", cpu);
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+ goto out_free_resources;
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+ }
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/* Both presence and absence of sram regulator are valid cases. */
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sram_reg = regulator_get_exclusive(cpu_dev, "sram");
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@@ -368,13 +373,21 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
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goto out_free_resources;
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}
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+ ret = clk_prepare_enable(cpu_clk);
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+ if (ret)
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+ goto out_free_opp_table;
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+
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+ ret = clk_prepare_enable(inter_clk);
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+ if (ret)
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+ goto out_disable_mux_clock;
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+
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/* Search a safe voltage for intermediate frequency. */
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rate = clk_get_rate(inter_clk);
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opp = dev_pm_opp_find_freq_ceil(cpu_dev, &rate);
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if (IS_ERR(opp)) {
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pr_err("failed to get intermediate opp for cpu%d\n", cpu);
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ret = PTR_ERR(opp);
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- goto out_free_opp_table;
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+ goto out_disable_inter_clock;
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}
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info->intermediate_voltage = dev_pm_opp_get_voltage(opp);
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dev_pm_opp_put(opp);
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@@ -393,6 +406,12 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
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return 0;
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+out_disable_inter_clock:
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+ clk_disable_unprepare(inter_clk);
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+
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+out_disable_mux_clock:
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+ clk_disable_unprepare(cpu_clk);
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+
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out_free_opp_table:
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dev_pm_opp_of_cpumask_remove_table(&info->cpus);
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@@ -411,14 +430,20 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
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static void mtk_cpu_dvfs_info_release(struct mtk_cpu_dvfs_info *info)
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{
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- if (!IS_ERR(info->proc_reg))
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+ if (!IS_ERR(info->proc_reg)) {
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+ regulator_disable(info->proc_reg);
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regulator_put(info->proc_reg);
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+ }
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if (!IS_ERR(info->sram_reg))
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regulator_put(info->sram_reg);
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- if (!IS_ERR(info->cpu_clk))
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+ if (!IS_ERR(info->cpu_clk)) {
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+ clk_disable_unprepare(info->cpu_clk);
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clk_put(info->cpu_clk);
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- if (!IS_ERR(info->inter_clk))
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+ }
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+ if (!IS_ERR(info->inter_clk)) {
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+ clk_disable_unprepare(info->inter_clk);
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clk_put(info->inter_clk);
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+ }
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dev_pm_opp_of_cpumask_remove_table(&info->cpus);
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}
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