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| author | Matthias Kaehlcke <mka@chromium.org> | 2020-09-15 10:10:54 -0700 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2020-09-16 15:22:15 +0530 |
| commit | bc9b9c5ab9d8d16157737db539929d57562926e9 (patch) | |
| tree | 67a4e9812e49945f274ded875ab5f42d61af2ee7 /drivers/cpufreq | |
| parent | 49b59f4c358cf71cb4e413749cd855478547c2ca (diff) | |
| download | linux-stable-bc9b9c5ab9d8d16157737db539929d57562926e9.tar.gz linux-stable-bc9b9c5ab9d8d16157737db539929d57562926e9.tar.bz2 linux-stable-bc9b9c5ab9d8d16157737db539929d57562926e9.zip | |
cpufreq: qcom: Don't add frequencies without an OPP
The driver currently adds all frequencies from the hardware LUT to
the cpufreq table, regardless of whether the corresponding OPP
exists. This prevents devices from disabling certain OPPs through
the device tree and can result in CPU frequencies for which the
interconnect bandwidth can't be adjusted. Only add frequencies
with an OPP entry.
Fixes: 55538fbc79e9 ("cpufreq: qcom: Read voltage LUT and populate OPP")
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/qcom-cpufreq-hw.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c index c485be839172..17fbb8cf36a1 100644 --- a/drivers/cpufreq/qcom-cpufreq-hw.c +++ b/drivers/cpufreq/qcom-cpufreq-hw.c @@ -187,10 +187,15 @@ static int qcom_cpufreq_hw_read_lut(struct device *cpu_dev, freq = cpu_hw_rate / 1000; if (freq != prev_freq && core_count != LUT_TURBO_IND) { - table[i].frequency = freq; - qcom_cpufreq_update_opp(cpu_dev, freq, volt); - dev_dbg(cpu_dev, "index=%d freq=%d, core_count %d\n", i, + if (!qcom_cpufreq_update_opp(cpu_dev, freq, volt)) { + table[i].frequency = freq; + dev_dbg(cpu_dev, "index=%d freq=%d, core_count %d\n", i, freq, core_count); + } else { + dev_warn(cpu_dev, "failed to update OPP for freq=%d\n", freq); + table[i].frequency = CPUFREQ_ENTRY_INVALID; + } + } else if (core_count == LUT_TURBO_IND) { table[i].frequency = CPUFREQ_ENTRY_INVALID; } @@ -207,9 +212,13 @@ static int qcom_cpufreq_hw_read_lut(struct device *cpu_dev, * as the boost frequency */ if (prev->frequency == CPUFREQ_ENTRY_INVALID) { - prev->frequency = prev_freq; - prev->flags = CPUFREQ_BOOST_FREQ; - qcom_cpufreq_update_opp(cpu_dev, prev_freq, volt); + if (!qcom_cpufreq_update_opp(cpu_dev, prev_freq, volt)) { + prev->frequency = prev_freq; + prev->flags = CPUFREQ_BOOST_FREQ; + } else { + dev_warn(cpu_dev, "failed to update OPP for freq=%d\n", + freq); + } } break; |