[SWDEV-540665] Fix power_caps in help text (#642)

Signed-off-by: adapryor <Adam.pryor@amd.com>

amdsmi_cli/amdsmi_helpers.py

@@ -821,8 +821,14 @@ class AMDSMIHelpers():
                     power_cap_min = power_cap_info['min_power_cap']
             except amdsmi_interface.AmdSmiLibraryException as e:
                 logging.debug(f"AMDSMIHelpers.get_power_caps - Unable to get power cap info for device {dev}: {str(e)}")
-                power_cap_min, power_cap_max = "N/A", "N/A"
                 continue
+        
+        # If we never found a real min or max, set them to N/A
+        if power_cap_min == amdsmi_interface.MaxUIntegerTypes.UINT64_T:
+            power_cap_min = "N/A"
+        if power_cap_max == 0:
+            power_cap_max = "N/A"
+
         return (power_cap_min, power_cap_max)
 
 

amdsmi_cli/amdsmi_parser.py

@@ -1228,9 +1228,11 @@ class AMDSMIParser(argparse.ArgumentParser):
             power_cap_min, power_cap_max = self.helpers.get_power_caps()
             if power_cap_max != "N/A":
                 power_cap_max = self.helpers.convert_SI_unit(power_cap_max, AMDSMIHelpers.SI_Unit.MICRO)
+                power_cap_max = str(power_cap_max) + ' W'
             if power_cap_min != "N/A":
                 power_cap_min = self.helpers.convert_SI_unit(power_cap_min, AMDSMIHelpers.SI_Unit.MICRO)
-            set_power_cap_help = f"Set power capacity limit:\n\tmin cap: {power_cap_min} W, max cap: {power_cap_max} W"
+                power_cap_min = str(power_cap_min) + ' W'
+            set_power_cap_help = f"Set power capacity limit:\n\tmin cap: {power_cap_min}, max cap: {power_cap_max}"
             set_clk_limit_help = "Sets the sclk (aka gfxclk) or mclk minimum and maximum frequencies. \n\tex: amd-smi set -L (sclk | mclk) (min | max) value"
             set_process_isolation_help = "Enable or disable the GPU process isolation on a per partition basis: 0 for disable and 1 for enable.\n"