Merge branch 'etnaviv/next' of https://git.pengutronix.de/git/lst/linux into drm-next

- a fix from Eric for synchronization with etnaviv exported dma-bufs
- thermal throttle support for newer GPU cores
- updated module clock gating to work around GPU errata
- a fix to restore userspace buffer cache performance

* 'etnaviv/next' of https://git.pengutronix.de/git/lst/linux:
  drm/etnaviv: restore ETNA_PREP_NOSYNC behaviour
  drm/etnaviv: implement cooling support for new GPU cores
  drm/etnaviv: update MLCG disables with info from newer Vivante driver
  drm/etnaviv: update common.xml.h
  drm/etnaviv: Expose our reservation object when exporting a dmabuf.

7 files changed, 136 insertions, 79 deletions

diff --git a/drivers/gpu/drm/etnaviv/common.xml.h b/drivers/gpu/drm/etnaviv/common.xml.h
index e881482b5971..207f45c999c3 100644
--- a/drivers/gpu/drm/etnaviv/common.xml.h
+++ b/drivers/gpu/drm/etnaviv/common.xml.h
@@ -8,10 +8,38 @@ http://0x04.net/cgit/index.cgi/rules-ng-ng
 git clone git://0x04.net/rules-ng-ng
 
 The rules-ng-ng source files this header was generated from are:
-- state_hi.xml (  24309 bytes, from 2015-12-12 09:02:53)
-- common.xml   (  18379 bytes, from 2015-12-12 09:02:53)
+- state.xml     (  19930 bytes, from 2017-03-09 15:43:43)
+- common.xml    (  23473 bytes, from 2017-03-09 15:43:43)
+- state_hi.xml  (  26403 bytes, from 2017-03-09 15:43:43)
+- copyright.xml (   1597 bytes, from 2016-12-08 16:37:56)
+- state_2d.xml  (  51552 bytes, from 2016-12-08 16:37:56)
+- state_3d.xml  (  66957 bytes, from 2017-03-09 15:43:43)
+- state_vg.xml  (   5975 bytes, from 2016-12-08 16:37:56)
 
-Copyright (C) 2015
+Copyright (C) 2012-2017 by the following authors:
+- Wladimir J. van der Laan <laanwj@gmail.com>
+- Christian Gmeiner <christian.gmeiner@gmail.com>
+- Lucas Stach <l.stach@pengutronix.de>
+- Russell King <rmk@arm.linux.org.uk>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sub license,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the
+next paragraph) shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
 */
 
 
@@ -162,129 +190,129 @@ Copyright (C) 2015
 #define chipMinorFeatures1_FC_FLUSH_STALL			0x80000000
 #define chipMinorFeatures2_LINE_LOOP				0x00000001
 #define chipMinorFeatures2_LOGIC_OP				0x00000002
-#define chipMinorFeatures2_UNK2					0x00000004
+#define chipMinorFeatures2_SEAMLESS_CUBE_MAP			0x00000004
 #define chipMinorFeatures2_SUPERTILED_TEXTURE			0x00000008
-#define chipMinorFeatures2_UNK4					0x00000010
+#define chipMinorFeatures2_LINEAR_PE				0x00000010
 #define chipMinorFeatures2_RECT_PRIMITIVE			0x00000020
 #define chipMinorFeatures2_COMPOSITION				0x00000040
 #define chipMinorFeatures2_CORRECT_AUTO_DISABLE_COUNT		0x00000080
-#define chipMinorFeatures2_UNK8					0x00000100
-#define chipMinorFeatures2_UNK9					0x00000200
-#define chipMinorFeatures2_UNK10				0x00000400
+#define chipMinorFeatures2_PE_SWIZZLE				0x00000100
+#define chipMinorFeatures2_END_EVENT				0x00000200
+#define chipMinorFeatures2_S1S8					0x00000400
 #define chipMinorFeatures2_HALTI1				0x00000800
-#define chipMinorFeatures2_UNK12				0x00001000
-#define chipMinorFeatures2_UNK13				0x00002000
-#define chipMinorFeatures2_UNK14				0x00004000
+#define chipMinorFeatures2_RGB888				0x00001000
+#define chipMinorFeatures2_TX__YUV_ASSEMBLER			0x00002000
+#define chipMinorFeatures2_DYNAMIC_FREQUENCY_SCALING		0x00004000
 #define chipMinorFeatures2_EXTRA_TEXTURE_STATE			0x00008000
 #define chipMinorFeatures2_FULL_DIRECTFB			0x00010000
 #define chipMinorFeatures2_2D_TILING				0x00020000
 #define chipMinorFeatures2_THREAD_WALKER_IN_PS			0x00040000
 #define chipMinorFeatures2_TILE_FILLER				0x00080000
-#define chipMinorFeatures2_UNK20				0x00100000
+#define chipMinorFeatures2_YUV_STANDARD				0x00100000
 #define chipMinorFeatures2_2D_MULTI_SOURCE_BLIT			0x00200000
-#define chipMinorFeatures2_UNK22				0x00400000
-#define chipMinorFeatures2_UNK23				0x00800000
-#define chipMinorFeatures2_UNK24				0x01000000
+#define chipMinorFeatures2_YUV_CONVERSION			0x00400000
+#define chipMinorFeatures2_FLUSH_FIXED_2D			0x00800000
+#define chipMinorFeatures2_INTERLEAVER				0x01000000
 #define chipMinorFeatures2_MIXED_STREAMS			0x02000000
 #define chipMinorFeatures2_2D_420_L2CACHE			0x04000000
-#define chipMinorFeatures2_UNK27				0x08000000
+#define chipMinorFeatures2_BUG_FIXES7				0x08000000
 #define chipMinorFeatures2_2D_NO_INDEX8_BRUSH			0x10000000
 #define chipMinorFeatures2_TEXTURE_TILED_READ			0x20000000
-#define chipMinorFeatures2_UNK30				0x40000000
-#define chipMinorFeatures2_UNK31				0x80000000
+#define chipMinorFeatures2_DECOMPRESS_Z16			0x40000000
+#define chipMinorFeatures2_BUG_FIXES8				0x80000000
 #define chipMinorFeatures3_ROTATION_STALL_FIX			0x00000001
-#define chipMinorFeatures3_UNK1					0x00000002
+#define chipMinorFeatures3_OCL_ONLY				0x00000002
 #define chipMinorFeatures3_2D_MULTI_SOURCE_BLT_EX		0x00000004
-#define chipMinorFeatures3_UNK3					0x00000008
-#define chipMinorFeatures3_UNK4					0x00000010
-#define chipMinorFeatures3_UNK5					0x00000020
-#define chipMinorFeatures3_UNK6					0x00000040
-#define chipMinorFeatures3_UNK7					0x00000080
+#define chipMinorFeatures3_INSTRUCTION_CACHE			0x00000008
+#define chipMinorFeatures3_GEOMETRY_SHADER			0x00000010
+#define chipMinorFeatures3_TEX_COMPRESSION_SUPERTILED		0x00000020
+#define chipMinorFeatures3_GENERICS				0x00000040
+#define chipMinorFeatures3_BUG_FIXES9				0x00000080
 #define chipMinorFeatures3_FAST_MSAA				0x00000100
-#define chipMinorFeatures3_UNK9					0x00000200
+#define chipMinorFeatures3_WCLIP				0x00000200
 #define chipMinorFeatures3_BUG_FIXES10				0x00000400
-#define chipMinorFeatures3_UNK11				0x00000800
+#define chipMinorFeatures3_UNIFIED_SAMPLERS			0x00000800
 #define chipMinorFeatures3_BUG_FIXES11				0x00001000
-#define chipMinorFeatures3_UNK13				0x00002000
-#define chipMinorFeatures3_UNK14				0x00004000
-#define chipMinorFeatures3_UNK15				0x00008000
-#define chipMinorFeatures3_UNK16				0x00010000
-#define chipMinorFeatures3_UNK17				0x00020000
+#define chipMinorFeatures3_PERFORMANCE_COUNTERS			0x00002000
+#define chipMinorFeatures3_HAS_FAST_TRANSCENDENTALS		0x00004000
+#define chipMinorFeatures3_BUG_FIXES12				0x00008000
+#define chipMinorFeatures3_BUG_FIXES13				0x00010000
+#define chipMinorFeatures3_DE_ENHANCEMENTS1			0x00020000
 #define chipMinorFeatures3_ACE					0x00040000
-#define chipMinorFeatures3_UNK19				0x00080000
-#define chipMinorFeatures3_UNK20				0x00100000
-#define chipMinorFeatures3_UNK21				0x00200000
+#define chipMinorFeatures3_TX_ENHANCEMENTS1			0x00080000
+#define chipMinorFeatures3_SH_ENHANCEMENTS1			0x00100000
+#define chipMinorFeatures3_SH_ENHANCEMENTS2			0x00200000
 #define chipMinorFeatures3_UNK22				0x00400000
-#define chipMinorFeatures3_UNK23				0x00800000
+#define chipMinorFeatures3_2D_FC_SOURCE				0x00800000
 #define chipMinorFeatures3_UNK24				0x01000000
 #define chipMinorFeatures3_UNK25				0x02000000
 #define chipMinorFeatures3_NEW_HZ				0x04000000
 #define chipMinorFeatures3_UNK27				0x08000000
 #define chipMinorFeatures3_UNK28				0x10000000
-#define chipMinorFeatures3_UNK29				0x20000000
+#define chipMinorFeatures3_SH_ENHANCEMENTS3			0x20000000
 #define chipMinorFeatures3_UNK30				0x40000000
 #define chipMinorFeatures3_UNK31				0x80000000
 #define chipMinorFeatures4_UNK0					0x00000001
-#define chipMinorFeatures4_UNK1					0x00000002
-#define chipMinorFeatures4_UNK2					0x00000004
+#define chipMinorFeatures4_PE_ENHANCEMENTS2			0x00000002
+#define chipMinorFeatures4_FRUSTUM_CLIP_FIX			0x00000004
 #define chipMinorFeatures4_UNK3					0x00000008
 #define chipMinorFeatures4_UNK4					0x00000010
-#define chipMinorFeatures4_UNK5					0x00000020
-#define chipMinorFeatures4_UNK6					0x00000040
+#define chipMinorFeatures4_2D_GAMMA				0x00000020
+#define chipMinorFeatures4_SINGLE_BUFFER			0x00000040
 #define chipMinorFeatures4_UNK7					0x00000080
 #define chipMinorFeatures4_UNK8					0x00000100
 #define chipMinorFeatures4_UNK9					0x00000200
 #define chipMinorFeatures4_UNK10				0x00000400
-#define chipMinorFeatures4_UNK11				0x00000800
-#define chipMinorFeatures4_UNK12				0x00001000
-#define chipMinorFeatures4_UNK13				0x00002000
+#define chipMinorFeatures4_TX_LERP_PRECISION_FIX		0x00000800
+#define chipMinorFeatures4_2D_COLOR_SPACE_CONVERSION		0x00001000
+#define chipMinorFeatures4_TEXTURE_ASTC				0x00002000
 #define chipMinorFeatures4_UNK14				0x00004000
 #define chipMinorFeatures4_UNK15				0x00008000
 #define chipMinorFeatures4_HALTI2				0x00010000
 #define chipMinorFeatures4_UNK17				0x00020000
 #define chipMinorFeatures4_SMALL_MSAA				0x00040000
 #define chipMinorFeatures4_UNK19				0x00080000
-#define chipMinorFeatures4_UNK20				0x00100000
-#define chipMinorFeatures4_UNK21				0x00200000
-#define chipMinorFeatures4_UNK22				0x00400000
-#define chipMinorFeatures4_UNK23				0x00800000
-#define chipMinorFeatures4_UNK24				0x01000000
-#define chipMinorFeatures4_UNK25				0x02000000
-#define chipMinorFeatures4_UNK26				0x04000000
-#define chipMinorFeatures4_UNK27				0x08000000
+#define chipMinorFeatures4_NEW_RA				0x00100000
+#define chipMinorFeatures4_2D_OPF_YUV_OUTPUT			0x00200000
+#define chipMinorFeatures4_2D_MULTI_SOURCE_BLT_EX2		0x00400000
+#define chipMinorFeatures4_NO_USER_CSC				0x00800000
+#define chipMinorFeatures4_ZFIXES				0x01000000
+#define chipMinorFeatures4_BUG_FIXES18				0x02000000
+#define chipMinorFeatures4_2D_COMPRESSION			0x04000000
+#define chipMinorFeatures4_PROBE				0x08000000
 #define chipMinorFeatures4_UNK28				0x10000000
-#define chipMinorFeatures4_UNK29				0x20000000
+#define chipMinorFeatures4_2D_SUPER_TILE_VERSION		0x20000000
 #define chipMinorFeatures4_UNK30				0x40000000
 #define chipMinorFeatures4_UNK31				0x80000000
 #define chipMinorFeatures5_UNK0					0x00000001
 #define chipMinorFeatures5_UNK1					0x00000002
 #define chipMinorFeatures5_UNK2					0x00000004
 #define chipMinorFeatures5_UNK3					0x00000008
-#define chipMinorFeatures5_UNK4					0x00000010
+#define chipMinorFeatures5_EEZ					0x00000010
 #define chipMinorFeatures5_UNK5					0x00000020
 #define chipMinorFeatures5_UNK6					0x00000040
 #define chipMinorFeatures5_UNK7					0x00000080
 #define chipMinorFeatures5_UNK8					0x00000100
 #define chipMinorFeatures5_HALTI3				0x00000200
 #define chipMinorFeatures5_UNK10				0x00000400
-#define chipMinorFeatures5_UNK11				0x00000800
+#define chipMinorFeatures5_2D_ONE_PASS_FILTER_TAP		0x00000800
 #define chipMinorFeatures5_UNK12				0x00001000
-#define chipMinorFeatures5_UNK13				0x00002000
-#define chipMinorFeatures5_UNK14				0x00004000
+#define chipMinorFeatures5_SEPARATE_SRC_DST			0x00002000
+#define chipMinorFeatures5_HALTI4				0x00004000
 #define chipMinorFeatures5_UNK15				0x00008000
-#define chipMinorFeatures5_UNK16				0x00010000
-#define chipMinorFeatures5_UNK17				0x00020000
+#define chipMinorFeatures5_ANDROID_ONLY				0x00010000
+#define chipMinorFeatures5_HAS_PRODUCTID			0x00020000
 #define chipMinorFeatures5_UNK18				0x00040000
 #define chipMinorFeatures5_UNK19				0x00080000
-#define chipMinorFeatures5_UNK20				0x00100000
+#define chipMinorFeatures5_PE_DITHER_FIX2			0x00100000
 #define chipMinorFeatures5_UNK21				0x00200000
 #define chipMinorFeatures5_UNK22				0x00400000
 #define chipMinorFeatures5_UNK23				0x00800000
 #define chipMinorFeatures5_UNK24				0x01000000
 #define chipMinorFeatures5_UNK25				0x02000000
 #define chipMinorFeatures5_UNK26				0x04000000
-#define chipMinorFeatures5_UNK27				0x08000000
-#define chipMinorFeatures5_UNK28				0x10000000
+#define chipMinorFeatures5_RS_DEPTHSTENCIL_NATIVE_SUPPORT	0x08000000
+#define chipMinorFeatures5_V2_MSAA_COMP_FIX			0x10000000
 #define chipMinorFeatures5_UNK29				0x20000000
 #define chipMinorFeatures5_UNK30				0x40000000
 #define chipMinorFeatures5_UNK31				0x80000000
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
index 5255278dde56..91e17aeee1da 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
@@ -495,6 +495,7 @@ static struct drm_driver etnaviv_drm_driver = {
 	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 	.gem_prime_export   = drm_gem_prime_export,
 	.gem_prime_import   = drm_gem_prime_import,
+	.gem_prime_res_obj  = etnaviv_gem_prime_res_obj,
 	.gem_prime_pin      = etnaviv_gem_prime_pin,
 	.gem_prime_unpin    = etnaviv_gem_prime_unpin,
 	.gem_prime_get_sg_table = etnaviv_gem_prime_get_sg_table,
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.h b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
index e41f38667c1c..058389f93b69 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
@@ -80,6 +80,7 @@ void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj);
 void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
 int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
 			   struct vm_area_struct *vma);
+struct reservation_object *etnaviv_gem_prime_res_obj(struct drm_gem_object *obj);
 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
 	struct dma_buf_attachment *attach, struct sg_table *sg);
 int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
index d6fb724fc3cc..9a3bea738330 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
@@ -411,16 +411,20 @@ int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
 	struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
 	struct drm_device *dev = obj->dev;
 	bool write = !!(op & ETNA_PREP_WRITE);
-	unsigned long remain =
-		op & ETNA_PREP_NOSYNC ? 0 : etnaviv_timeout_to_jiffies(timeout);
-	long lret;
-
-	lret = reservation_object_wait_timeout_rcu(etnaviv_obj->resv,
-						   write, true, remain);
-	if (lret < 0)
-		return lret;
-	else if (lret == 0)
-		return remain == 0 ? -EBUSY : -ETIMEDOUT;
+	int ret;
+
+	if (op & ETNA_PREP_NOSYNC) {
+		if (!reservation_object_test_signaled_rcu(etnaviv_obj->resv,
+							  write))
+			return -EBUSY;
+	} else {
+		unsigned long remain = etnaviv_timeout_to_jiffies(timeout);
+
+		ret = reservation_object_wait_timeout_rcu(etnaviv_obj->resv,
+							  write, true, remain);
+		if (ret <= 0)
+			return ret == 0 ? -ETIMEDOUT : ret;
+	}
 
 	if (etnaviv_obj->flags & ETNA_BO_CACHED) {
 		if (!etnaviv_obj->sgt) {
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
index 367bf952f61a..e5da4f2300ba 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
@@ -150,3 +150,10 @@ fail:
 
 	return ERR_PTR(ret);
 }
+
+struct reservation_object *etnaviv_gem_prime_res_obj(struct drm_gem_object *obj)
+{
+	struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
+
+	return etnaviv_obj->resv;
+}
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index 9a9c40717801..ada45fdd0eae 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -412,13 +412,19 @@ static void etnaviv_gpu_load_clock(struct etnaviv_gpu *gpu, u32 clock)
 
 static void etnaviv_gpu_update_clock(struct etnaviv_gpu *gpu)
 {
-	unsigned int fscale = 1 << (6 - gpu->freq_scale);
-	u32 clock;
-
-	clock = VIVS_HI_CLOCK_CONTROL_DISABLE_DEBUG_REGISTERS |
-		VIVS_HI_CLOCK_CONTROL_FSCALE_VAL(fscale);
+	if (gpu->identity.minor_features2 &
+	    chipMinorFeatures2_DYNAMIC_FREQUENCY_SCALING) {
+		clk_set_rate(gpu->clk_core,
+			     gpu->base_rate_core >> gpu->freq_scale);
+		clk_set_rate(gpu->clk_shader,
+			     gpu->base_rate_shader >> gpu->freq_scale);
+	} else {
+		unsigned int fscale = 1 << (6 - gpu->freq_scale);
+		u32 clock = VIVS_HI_CLOCK_CONTROL_DISABLE_DEBUG_REGISTERS |
+			    VIVS_HI_CLOCK_CONTROL_FSCALE_VAL(fscale);
 
-	etnaviv_gpu_load_clock(gpu, clock);
+		etnaviv_gpu_load_clock(gpu, clock);
+	}
 }
 
 static int etnaviv_hw_reset(struct etnaviv_gpu *gpu)
@@ -523,9 +529,10 @@ static void etnaviv_gpu_enable_mlcg(struct etnaviv_gpu *gpu)
 
 	pmc = gpu_read(gpu, VIVS_PM_MODULE_CONTROLS);
 
-	/* Disable PA clock gating for GC400+ except for GC420 */
+	/* Disable PA clock gating for GC400+ without bugfix except for GC420 */
 	if (gpu->identity.model >= chipModel_GC400 &&
-	    gpu->identity.model != chipModel_GC420)
+	    gpu->identity.model != chipModel_GC420 &&
+	    !(gpu->identity.minor_features3 & chipMinorFeatures3_BUG_FIXES12))
 		pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_PA;
 
 	/*
@@ -541,6 +548,11 @@ static void etnaviv_gpu_enable_mlcg(struct etnaviv_gpu *gpu)
 	if (gpu->identity.revision < 0x5422)
 		pmc |= BIT(15); /* Unknown bit */
 
+	/* Disable TX clock gating on affected core revisions. */
+	if (etnaviv_is_model_rev(gpu, GC4000, 0x5222) ||
+	    etnaviv_is_model_rev(gpu, GC2000, 0x5108))
+		pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_TX;
+
 	pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA_HZ;
 	pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA_EZ;
 
@@ -1736,11 +1748,13 @@ static int etnaviv_gpu_platform_probe(struct platform_device *pdev)
 	DBG("clk_core: %p", gpu->clk_core);
 	if (IS_ERR(gpu->clk_core))
 		gpu->clk_core = NULL;
+	gpu->base_rate_core = clk_get_rate(gpu->clk_core);
 
 	gpu->clk_shader = devm_clk_get(&pdev->dev, "shader");
 	DBG("clk_shader: %p", gpu->clk_shader);
 	if (IS_ERR(gpu->clk_shader))
 		gpu->clk_shader = NULL;
+	gpu->base_rate_shader = clk_get_rate(gpu->clk_shader);
 
 	/* TODO: figure out max mapped size */
 	dev_set_drvdata(dev, gpu);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
index 9227a9740447..689cb8f3680c 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
@@ -152,6 +152,8 @@ struct etnaviv_gpu {
 	u32 hangcheck_dma_addr;
 	struct work_struct recover_work;
 	unsigned int freq_scale;
+	unsigned long base_rate_core;
+	unsigned long base_rate_shader;
 };
 
 static inline void gpu_write(struct etnaviv_gpu *gpu, u32 reg, u32 data)