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| author |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-07-08 11:00:02 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-07-08 11:00:02 +0200 |
| commit | 586a07dca8c51b966960d1f0d8be9c27d7e0a95c (patch) | |
| tree | ef32cb11c5bddfc122a5c443ff5b2ca16bc6942d /Documentation | |
| parent | Merge branches 'pm-opp', 'pm-misc', 'pm-avs' and 'pm-tools' (diff) | |
| parent | cpufreq: Avoid calling cpufreq_verify_current_freq() from handle_update() (diff) | |
| download | linux-dev-586a07dca8c51b966960d1f0d8be9c27d7e0a95c.tar.xz linux-dev-586a07dca8c51b966960d1f0d8be9c27d7e0a95c.zip | |
Merge branch 'pm-cpufreq'
* pm-cpufreq:
cpufreq: Avoid calling cpufreq_verify_current_freq() from handle_update()
cpufreq: Consolidate cpufreq_update_current_freq() and __cpufreq_get()
cpufreq: Don't skip frequency validation for has_target() drivers
cpufreq: Use has_target() instead of !setpolicy
cpufreq: Remove redundant !setpolicy check
cpufreq: Move the IS_ENABLED(CPU_THERMAL) macro into a stub
cpufreq: s5pv210: Don't flood kernel log after cpufreq change
cpufreq: pcc-cpufreq: Fail initialization if driver cannot be registered
cpufreq: add driver for Raspberry Pi
cpufreq: Switch imx7d to imx-cpufreq-dt for speed grading
cpufreq: imx-cpufreq-dt: Remove global platform match list
cpufreq: brcmstb-avs-cpufreq: Fix types for voltage/frequency
cpufreq: brcmstb-avs-cpufreq: Fix initial command check
cpufreq: armada-37xx: Remove set but not used variable 'freq'
cpufreq: imx-cpufreq-dt: Fix no OPPs available on unfused parts
dt-bindings: imx-cpufreq-dt: Document opp-supported-hw usage
cpufreq: Add imx-cpufreq-dt driver
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/cpufreq/imx-cpufreq-dt.txt | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/cpufreq/imx-cpufreq-dt.txt b/Documentation/devicetree/bindings/cpufreq/imx-cpufreq-dt.txt new file mode 100644 index 000000000000..87bff5add3f9 --- /dev/null +++ b/Documentation/devicetree/bindings/cpufreq/imx-cpufreq-dt.txt @@ -0,0 +1,37 @@ +i.MX CPUFreq-DT OPP bindings +================================ + +Certain i.MX SoCs support different OPPs depending on the "market segment" and +"speed grading" value which are written in fuses. These bits are combined with +the opp-supported-hw values for each OPP to check if the OPP is allowed. + +Required properties: +-------------------- + +For each opp entry in 'operating-points-v2' table: +- opp-supported-hw: Two bitmaps indicating: + - Supported speed grade mask + - Supported market segment mask + 0: Consumer + 1: Extended Consumer + 2: Industrial + 3: Automotive + +Example: +-------- + +opp_table { + compatible = "operating-points-v2"; + opp-1000000000 { + opp-hz = /bits/ 64 <1000000000>; + /* grade >= 0, consumer only */ + opp-supported-hw = <0xf>, <0x3>; + }; + + opp-1300000000 { + opp-hz = /bits/ 64 <1300000000>; + opp-microvolt = <1000000>; + /* grade >= 1, all segments */ + opp-supported-hw = <0xe>, <0x7>; + }; +} |