[PATCH 0/5] 0 MHz is not a valid current frequency (v3)

[Luben Tuikov]

Some ASICs support low-power functionality for the whole ASIC or just
an IP block. When in such low-power mode, some sysfs interfaces would
report a frequency of 0, e.g.,

$cat /sys/class/drm/card0/device/pp_dpm_sclk
0: 500Mhz 
1: 0Mhz *
2: 2200Mhz 
$_

An operating frequency of 0 MHz doesn't make sense, and this interface
is designed to report only operating clock frequencies, i.e. non-zero,
and possibly the current one.

When in this low-power state, round to the smallest
operating frequency, for this interface, as follows,

$cat /sys/class/drm/card0/device/pp_dpm_sclk
0: 500Mhz *
1: 2200Mhz 
$_

v2: Fix description to reflect change in patch 1--add an 's'.
v3: Don't tag a current if current is 0.

Luben Tuikov (5):
  drm/amd/pm: Slight function rename (v2)
  drm/amd/pm: Rename cur_value to curr_value
  drm/amd/pm: Rename freq_values --> freq_value
  dpm/amd/pm: Sienna: 0 MHz is not a current clock frequency (v2)
  dpm/amd/pm: Navi10: 0 MHz is not a current clock frequency (v2)

 .../gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c   | 57 ++++++++------
 .../amd/pm/swsmu/smu11/sienna_cichlid_ppt.c   | 74 ++++++++++++-------
 2 files changed, 83 insertions(+), 48 deletions(-)


base-commit: b81c53cdbe1482b1f4013ba7a41bca2174cde109
-- 
2.33.1.558.g2bd2f258f4