diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index aaad93d7076beaad1d323e4e7a1a5f89ed12b506..c75ccc7f181f47976463940ecaaa824affed451a 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -241,6 +241,7 @@ extern int rv6xx_get_temp(struct radeon_device *rdev);
 extern int rv770_get_temp(struct radeon_device *rdev);
 extern int evergreen_get_temp(struct radeon_device *rdev);
 extern int sumo_get_temp(struct radeon_device *rdev);
+extern int si_get_temp(struct radeon_device *rdev);
 extern void evergreen_tiling_fields(unsigned tiling_flags, unsigned *bankw,
 				    unsigned *bankh, unsigned *mtaspect,
 				    unsigned *tile_split);
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 3575129c1940caed628932d0f2f5064cf53cceeb..a6dbefca56dd7a51c7b919c8dbc68ab78401a0dc 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -474,6 +474,9 @@ static ssize_t radeon_hwmon_show_temp(struct device *dev,
 	case THERMAL_TYPE_SUMO:
 		temp = sumo_get_temp(rdev);
 		break;
+	case THERMAL_TYPE_SI:
+		temp = si_get_temp(rdev);
+		break;
 	default:
 		temp = 0;
 		break;
@@ -514,6 +517,7 @@ static int radeon_hwmon_init(struct radeon_device *rdev)
 	case THERMAL_TYPE_EVERGREEN:
 	case THERMAL_TYPE_NI:
 	case THERMAL_TYPE_SUMO:
+	case THERMAL_TYPE_SI:
 		rdev->pm.int_hwmon_dev = hwmon_device_register(rdev->dev);
 		if (IS_ERR(rdev->pm.int_hwmon_dev)) {
 			err = PTR_ERR(rdev->pm.int_hwmon_dev);
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 39c64df005cfd4c24f5bc5b6a06c0c00658e1996..3e91429d7bd2942cdb6da168e899744d2b439b42 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -28,6 +28,25 @@
 #include "sid.h"
 #include "atom.h"
 
+/* get temperature in millidegrees */
+int si_get_temp(struct radeon_device *rdev)
+{
+	u32 temp;
+	int actual_temp = 0;
+
+	temp = (RREG32(CG_MULT_THERMAL_STATUS) & CTF_TEMP_MASK) >>
+		CTF_TEMP_SHIFT;
+
+	if (temp & 0x200)
+		actual_temp = 255;
+	else
+		actual_temp = temp & 0x1ff;
+
+	actual_temp = (actual_temp * 1000);
+
+	return actual_temp;
+}
+
 /* watermark setup */
 static u32 dce6_line_buffer_adjust(struct radeon_device *rdev,
 				   struct radeon_crtc *radeon_crtc,
diff --git a/drivers/gpu/drm/radeon/sid.h b/drivers/gpu/drm/radeon/sid.h
index 962cc17a60762e4b037a31d999ebb27beaafd0b2..f565a8fa7ead509bb06c1fdfc126777e8dc41d97 100644
--- a/drivers/gpu/drm/radeon/sid.h
+++ b/drivers/gpu/drm/radeon/sid.h
@@ -24,6 +24,14 @@
 #ifndef SI_H
 #define SI_H
 
+#define	CG_MULT_THERMAL_STATUS					0x714
+#define		ASIC_MAX_TEMP(x)				((x) << 0)
+#define		ASIC_MAX_TEMP_MASK				0x000001ff
+#define		ASIC_MAX_TEMP_SHIFT				0
+#define		CTF_TEMP(x)					((x) << 9)
+#define		CTF_TEMP_MASK					0x0003fe00
+#define		CTF_TEMP_SHIFT					9
+
 #define MC_SHARED_CHMAP						0x2004
 #define		NOOFCHAN_SHIFT					12
 #define		NOOFCHAN_MASK					0x0000f000