drm/amd/pp: Print out voltage/clock range in sysfs

when user cat pp_od_clk_voltage
add display info about the sclk/mclk/vddc range that user can overdrive
output as:
OD_SCLK:
0:        300MHz        900mV
1:        400MHz        912mV
2:        500MHz        925mV
3:        600MHz        937mV
4:        700MHz        950mV
5:        800MHz        975mV
6:        900MHz        987mV
7:       1000MHz       1000mV
OD_MCLK:
0:        300MHz        900mV
1:       1500MHz        912mV
OD_RANGE:
SCLK:     300MHz       1200MHz
MCLK:     300MHz       1500MHz
VDDC:     700mV        1200mV

also
1. remove unnecessary whitespace before a quoted newline
2. change unit of frequency Mhz to MHz
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NRex Zhu <Rex.Zhu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c

@@ -555,6 +555,7 @@ static ssize_t amdgpu_get_pp_od_clk_voltage(struct device *dev,
 	if (adev->powerplay.pp_funcs->print_clock_levels) {
 		size = amdgpu_dpm_print_clock_levels(adev, OD_SCLK, buf);
 		size += amdgpu_dpm_print_clock_levels(adev, OD_MCLK, buf+size);
+		size += amdgpu_dpm_print_clock_levels(adev, OD_RANGE, buf+size);
 		return size;
 	} else {
 		return snprintf(buf, PAGE_SIZE, "\n");

drivers/gpu/drm/amd/include/kgd_pp_interface.h

@@ -94,6 +94,7 @@ enum pp_clock_type {
 	PP_PCIE,
 	OD_SCLK,
 	OD_MCLK,
+	OD_RANGE,
 };
 
 enum amd_pp_sensors {

drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c

@@ -4335,22 +4335,36 @@ static int smu7_print_clock_levels(struct pp_hwmgr *hwmgr,
 		break;
 	case OD_SCLK:
 		if (hwmgr->od_enabled) {
-			size = sprintf(buf, "%s: \n", "OD_SCLK");
+			size = sprintf(buf, "%s:\n", "OD_SCLK");
 			for (i = 0; i < odn_sclk_table->num_of_pl; i++)
-				size += sprintf(buf + size, "%d: %10uMhz %10u mV\n",
-					i, odn_sclk_table->entries[i].clock / 100,
+				size += sprintf(buf + size, "%d: %10uMHz %10umV\n",
+					i, odn_sclk_table->entries[i].clock/100,
 					odn_sclk_table->entries[i].vddc);
 		}
 		break;
 	case OD_MCLK:
 		if (hwmgr->od_enabled) {
-			size = sprintf(buf, "%s: \n", "OD_MCLK");
+			size = sprintf(buf, "%s:\n", "OD_MCLK");
 			for (i = 0; i < odn_mclk_table->num_of_pl; i++)
-				size += sprintf(buf + size, "%d: %10uMhz %10u mV\n",
-					i, odn_mclk_table->entries[i].clock / 100,
+				size += sprintf(buf + size, "%d: %10uMHz %10umV\n",
+					i, odn_mclk_table->entries[i].clock/100,
 					odn_mclk_table->entries[i].vddc);
 		}
 		break;
+	case OD_RANGE:
+		if (hwmgr->od_enabled) {
+			size = sprintf(buf, "%s:\n", "OD_RANGE");
+			size += sprintf(buf + size, "SCLK: %7uMHz %10uMHz\n",
+				data->golden_dpm_table.sclk_table.dpm_levels[0].value/100,
+				hwmgr->platform_descriptor.overdriveLimit.engineClock/100);
+			size += sprintf(buf + size, "MCLK: %7uMHz %10uMHz\n",
+				data->golden_dpm_table.mclk_table.dpm_levels[0].value/100,
+				hwmgr->platform_descriptor.overdriveLimit.memoryClock/100);
+			size += sprintf(buf + size, "VDDC: %7umV %11umV\n",
+				data->odn_dpm_table.min_vddc,
+				data->odn_dpm_table.max_vddc);
+		}
+		break;
 	default:
 		break;
 	}