[PATCH v4 0/7] Add support for GPU DDR BW scaling

[PATCH v4 0/7] Add support for GPU DDR BW scaling

[Akhil P Oommen]

This is mostly a rebase of Sharat's patches [1] on the tip of msm-next branch.
Changes compared to v3:
	1. Rebased on top of Jonathan's patch which adds support for changing
	gpu freq through hfi on newer targets. Created patch 1 to make
	this the generic approach of setting gpu freq on newer targets.
	2. As suggested by Rob, left the icc_path intact for pre-a6xx
	GPUs.

As mentioned in [1], these patches have dependency on Georgi's series from
opp/linux-next [2] and also Sibi's patch which adds a helper function to
set and clear ddr bandwidth vote [2].

[1] https://patchwork.freedesktop.org/series/75291/
[2] https://kernel.googlesource.com/pub/scm/linux/kernel/git/vireshk/pm/+log/opp/linux-next/

Akhil P Oommen (1):
  drm: msm: a6xx: set gpu freq through hfi

Sharat Masetty (6):
  dt-bindings: drm/msm/gpu: Document gpu opp table
  drm: msm: a6xx: send opp instead of a frequency
  drm: msm: a6xx: use dev_pm_opp_set_bw to scale DDR
  arm64: dts: qcom: SDM845: Enable GPU DDR bw scaling
  arm64: dts: qcom: sc7180: Add interconnects property for GPU
  arm64: dts: qcom: sc7180: Add opp-peak-kBps to GPU opp

 .../devicetree/bindings/display/msm/gpu.txt        |  28 ++++++
 arch/arm64/boot/dts/qcom/sc7180.dtsi               |   9 ++
 arch/arm64/boot/dts/qcom/sdm845.dtsi               |   9 ++
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c              | 105 +++++++++++----------
 drivers/gpu/drm/msm/adreno/a6xx_gpu.h              |   2 +-
 drivers/gpu/drm/msm/msm_gpu.c                      |   3 +-
 drivers/gpu/drm/msm/msm_gpu.h                      |   3 +-
 7 files changed, 106 insertions(+), 53 deletions(-)

-- 
2.7.4

[PATCH v4 1/7] dt-bindings: drm/msm/gpu: Document gpu opp table

[Akhil P Oommen]

From: Sharat Masetty <smasetty@codeaurora.org>

Update documentation to list the gpu opp table bindings including the
newly added "opp-peak-kBps" needed for GPU-DDR bandwidth scaling.

Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
---
 .../devicetree/bindings/display/msm/gpu.txt        | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/msm/gpu.txt b/Documentation/devicetree/bindings/display/msm/gpu.txt
index fd779cd..1af0ff1 100644
--- a/Documentation/devicetree/bindings/display/msm/gpu.txt
+++ b/Documentation/devicetree/bindings/display/msm/gpu.txt
@@ -112,6 +112,34 @@ Example a6xx (with GMU):
 		interconnects = <&rsc_hlos MASTER_GFX3D &rsc_hlos SLAVE_EBI1>;
 		interconnect-names = "gfx-mem";
 
+		gpu_opp_table: opp-table {
+			compatible = "operating-points-v2";
+
+			opp-430000000 {
+				opp-hz = /bits/ 64 <430000000>;
+				opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
+				opp-peak-kBps = <5412000>;
+			};
+
+			opp-355000000 {
+				opp-hz = /bits/ 64 <355000000>;
+				opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
+				opp-peak-kBps = <3072000>;
+			};
+
+			opp-267000000 {
+				opp-hz = /bits/ 64 <267000000>;
+				opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+				opp-peak-kBps = <3072000>;
+			};
+
+			opp-180000000 {
+				opp-hz = /bits/ 64 <180000000>;
+				opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>;
+				opp-peak-kBps = <1804000>;
+			};
+		};
+
 		qcom,gmu = <&gmu>;
 
 		zap-shader {
-- 
2.7.4

[PATCH v4 2/7] drm: msm: a6xx: send opp instead of a frequency

[Akhil P Oommen]

From: Sharat Masetty <smasetty@codeaurora.org>

This patch changes the plumbing to send the devfreq recommended opp rather
than the frequency. Also consolidate and rearrange the code in a6xx to set
the GPU frequency and the icc vote in preparation for the upcoming
changes for GPU->DDR scaling votes.

Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 73 ++++++++++++++++-------------------
 drivers/gpu/drm/msm/adreno/a6xx_gpu.h |  2 +-
 drivers/gpu/drm/msm/msm_gpu.c         |  3 +-
 drivers/gpu/drm/msm/msm_gpu.h         |  3 +-
 4 files changed, 38 insertions(+), 43 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 21e77d6..233afea 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -103,17 +103,31 @@ bool a6xx_gmu_gx_is_on(struct a6xx_gmu *gmu)
 		A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_GX_HM_CLK_OFF));
 }
 
-static void __a6xx_gmu_set_freq(struct a6xx_gmu *gmu, int index)
+void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp)
 {
-	struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
-	struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
-	struct msm_gpu *gpu = &adreno_gpu->base;
-	int ret;
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
+	struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
+	u32 perf_index;
+	unsigned long gpu_freq;
+	int ret = 0;
+
+	gpu_freq = dev_pm_opp_get_freq(opp);
+
+	if (gpu_freq == gmu->freq)
+		return;
+
+	for (perf_index = 0; perf_index < gmu->nr_gpu_freqs - 1; perf_index++)
+		if (gpu_freq == gmu->gpu_freqs[perf_index])
+			break;
+
+	gmu->current_perf_index = perf_index;
+	gmu->freq = gmu->gpu_freqs[perf_index];
 
 	gmu_write(gmu, REG_A6XX_GMU_DCVS_ACK_OPTION, 0);
 
 	gmu_write(gmu, REG_A6XX_GMU_DCVS_PERF_SETTING,
-		((3 & 0xf) << 28) | index);
+			((3 & 0xf) << 28) | perf_index);
 
 	/*
 	 * Send an invalid index as a vote for the bus bandwidth and let the
@@ -136,38 +150,6 @@ static void __a6xx_gmu_set_freq(struct a6xx_gmu *gmu, int index)
 	icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
 }
 
-void a6xx_gmu_set_freq(struct msm_gpu *gpu, unsigned long freq)
-{
-	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
-	struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
-	struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
-	u32 perf_index = 0;
-
-	if (freq == gmu->freq)
-		return;
-
-	for (perf_index = 0; perf_index < gmu->nr_gpu_freqs - 1; perf_index++)
-		if (freq == gmu->gpu_freqs[perf_index])
-			break;
-
-	gmu->current_perf_index = perf_index;
-	gmu->freq = gmu->gpu_freqs[perf_index];
-
-	/*
-	 * This can get called from devfreq while the hardware is idle. Don't
-	 * bring up the power if it isn't already active
-	 */
-	if (pm_runtime_get_if_in_use(gmu->dev) == 0)
-		return;
-
-	if (gmu->legacy)
-		__a6xx_gmu_set_freq(gmu, perf_index);
-	else
-		a6xx_hfi_set_freq(gmu, perf_index);
-
-	pm_runtime_put(gmu->dev);
-}
-
 unsigned long a6xx_gmu_get_freq(struct msm_gpu *gpu)
 {
 	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
@@ -839,6 +821,19 @@ static void a6xx_gmu_force_off(struct a6xx_gmu *gmu)
 	a6xx_gmu_rpmh_off(gmu);
 }
 
+static void a6xx_gmu_set_initial_freq(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
+{
+	struct dev_pm_opp *gpu_opp;
+	unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index];
+
+	gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true);
+	if (IS_ERR_OR_NULL(gpu_opp))
+		return;
+
+	a6xx_gmu_set_freq(gpu, gpu_opp);
+	dev_pm_opp_put(gpu_opp);
+}
+
 int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
 {
 	struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
@@ -899,7 +894,7 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
 
 	/* Set the GPU to the current freq */
 	if (gmu->legacy)
-		__a6xx_gmu_set_freq(gmu, gmu->current_perf_index);
+		a6xx_gmu_set_initial_freq(gpu, gmu);
 	else
 		a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
 
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
index 7239b8b..03ba60d 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
@@ -63,7 +63,7 @@ void a6xx_gmu_clear_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state);
 int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node);
 void a6xx_gmu_remove(struct a6xx_gpu *a6xx_gpu);
 
-void a6xx_gmu_set_freq(struct msm_gpu *gpu, unsigned long freq);
+void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp);
 unsigned long a6xx_gmu_get_freq(struct msm_gpu *gpu);
 
 void a6xx_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index a22d306..82eb727 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -13,7 +13,6 @@
 
 #include <generated/utsrelease.h>
 #include <linux/string_helpers.h>
-#include <linux/pm_opp.h>
 #include <linux/devfreq.h>
 #include <linux/devcoredump.h>
 #include <linux/sched/task.h>
@@ -34,7 +33,7 @@ static int msm_devfreq_target(struct device *dev, unsigned long *freq,
 		return PTR_ERR(opp);
 
 	if (gpu->funcs->gpu_set_freq)
-		gpu->funcs->gpu_set_freq(gpu, (u64)*freq);
+		gpu->funcs->gpu_set_freq(gpu, opp);
 	else
 		clk_set_rate(gpu->core_clk, *freq);
 
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index 429cb40..0db117a 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -9,6 +9,7 @@
 
 #include <linux/clk.h>
 #include <linux/interconnect.h>
+#include <linux/pm_opp.h>
 #include <linux/regulator/consumer.h>
 
 #include "msm_drv.h"
@@ -61,7 +62,7 @@ struct msm_gpu_funcs {
 	struct msm_gpu_state *(*gpu_state_get)(struct msm_gpu *gpu);
 	int (*gpu_state_put)(struct msm_gpu_state *state);
 	unsigned long (*gpu_get_freq)(struct msm_gpu *gpu);
-	void (*gpu_set_freq)(struct msm_gpu *gpu, unsigned long freq);
+	void (*gpu_set_freq)(struct msm_gpu *gpu, struct dev_pm_opp *opp);
 	struct msm_gem_address_space *(*create_address_space)
 		(struct msm_gpu *gpu, struct platform_device *pdev);
 };
-- 
2.7.4

[PATCH v4 3/7] drm: msm: a6xx: set gpu freq through hfi

[Akhil P Oommen]

Newer targets support changing gpu frequency through HFI. So
use that wherever supported instead of the legacy method.

Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 233afea..b547339 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -121,6 +121,12 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp)
 		if (gpu_freq == gmu->gpu_freqs[perf_index])
 			break;
 
+	if (!gmu->legacy) {
+		a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
+		icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
+		return;
+	}
+
 	gmu->current_perf_index = perf_index;
 	gmu->freq = gmu->gpu_freqs[perf_index];
 
@@ -893,10 +899,7 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
 	enable_irq(gmu->hfi_irq);
 
 	/* Set the GPU to the current freq */
-	if (gmu->legacy)
-		a6xx_gmu_set_initial_freq(gpu, gmu);
-	else
-		a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
+	a6xx_gmu_set_initial_freq(gpu, gmu);
 
 	/*
 	 * "enable" the GX power domain which won't actually do anything but it
-- 
2.7.4

Re: [PATCH v4 3/7] drm: msm: a6xx: set gpu freq through hfi

[Jonathan Marek]

On 7/9/20 4:00 PM, Akhil P Oommen wrote:
> Newer targets support changing gpu frequency through HFI. So
> use that wherever supported instead of the legacy method.
> 

It was already using HFI on newer targets. Don't break it in one commit 
then fix it in the next.

> Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
> ---
>   drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 11 +++++++----
>   1 file changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
> index 233afea..b547339 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
> @@ -121,6 +121,12 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp)
>   		if (gpu_freq == gmu->gpu_freqs[perf_index])
>   			break;
>   
> +	if (!gmu->legacy) {
> +		a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
> +		icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
> +		return;
> +	}
> +
>   	gmu->current_perf_index = perf_index;
>   	gmu->freq = gmu->gpu_freqs[perf_index];
>   
> @@ -893,10 +899,7 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
>   	enable_irq(gmu->hfi_irq);
>   
>   	/* Set the GPU to the current freq */
> -	if (gmu->legacy)
> -		a6xx_gmu_set_initial_freq(gpu, gmu);
> -	else
> -		a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
> +	a6xx_gmu_set_initial_freq(gpu, gmu);
>   
>   	/*
>   	 * "enable" the GX power domain which won't actually do anything but it
> 

Re: [PATCH v4 3/7] drm: msm: a6xx: set gpu freq through hfi

[Akhil P Oommen]

On 7/10/2020 1:34 AM, Jonathan Marek wrote:
> On 7/9/20 4:00 PM, Akhil P Oommen wrote:
>> Newer targets support changing gpu frequency through HFI. So
>> use that wherever supported instead of the legacy method.
>>
>
> It was already using HFI on newer targets. Don't break it in one 
> commit then fix it in the next.

Oops. I somehow got confused. Will fix and resend.

-Akhil

>
>> Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
>> ---
>>   drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 11 +++++++----
>>   1 file changed, 7 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c 
>> b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
>> index 233afea..b547339 100644
>> --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
>> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
>> @@ -121,6 +121,12 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, 
>> struct dev_pm_opp *opp)
>>           if (gpu_freq == gmu->gpu_freqs[perf_index])
>>               break;
>>   +    if (!gmu->legacy) {
>> +        a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
>> +        icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
>> +        return;
>> +    }
>> +
>>       gmu->current_perf_index = perf_index;
>>       gmu->freq = gmu->gpu_freqs[perf_index];
>>   @@ -893,10 +899,7 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
>>       enable_irq(gmu->hfi_irq);
>>         /* Set the GPU to the current freq */
>> -    if (gmu->legacy)
>> -        a6xx_gmu_set_initial_freq(gpu, gmu);
>> -    else
>> -        a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
>> +    a6xx_gmu_set_initial_freq(gpu, gmu);
>>         /*
>>        * "enable" the GX power domain which won't actually do 
>> anything but it
>>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

Re: [PATCH v4 3/7] drm: msm: a6xx: set gpu freq through hfi

[Akhil P Oommen]

On 7/11/2020 2:43 AM, Akhil P Oommen wrote:
>
> On 7/10/2020 1:34 AM, Jonathan Marek wrote:
>> On 7/9/20 4:00 PM, Akhil P Oommen wrote:
>>> Newer targets support changing gpu frequency through HFI. So
>>> use that wherever supported instead of the legacy method.
>>>
>>
>> It was already using HFI on newer targets. Don't break it in one 
>> commit then fix it in the next.
>
> Oops. I somehow got confused. Will fix and resend.
>
> -Akhil

I broke the pm_runtime_get_if_in_use() check too. Other than that, just 
squashing this patch with the previous one should be enough.

-Akhil.

>
>>
>>> Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
>>> ---
>>>   drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 11 +++++++----
>>>   1 file changed, 7 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c 
>>> b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
>>> index 233afea..b547339 100644
>>> --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
>>> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
>>> @@ -121,6 +121,12 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, 
>>> struct dev_pm_opp *opp)
>>>           if (gpu_freq == gmu->gpu_freqs[perf_index])
>>>               break;
>>>   +    if (!gmu->legacy) {
>>> +        a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
>>> +        icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
>>> +        return;
>>> +    }
>>> +
>>>       gmu->current_perf_index = perf_index;
>>>       gmu->freq = gmu->gpu_freqs[perf_index];
>>>   @@ -893,10 +899,7 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
>>>       enable_irq(gmu->hfi_irq);
>>>         /* Set the GPU to the current freq */
>>> -    if (gmu->legacy)
>>> -        a6xx_gmu_set_initial_freq(gpu, gmu);
>>> -    else
>>> -        a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
>>> +    a6xx_gmu_set_initial_freq(gpu, gmu);
>>>         /*
>>>        * "enable" the GX power domain which won't actually do 
>>> anything but it
>>>
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

[PATCH v4 4/7] drm: msm: a6xx: use dev_pm_opp_set_bw to scale DDR

[Akhil P Oommen]

From: Sharat Masetty <smasetty@codeaurora.org>

This patches replaces the previously used static DDR vote and uses
dev_pm_opp_set_bw() to scale GPU->DDR bandwidth along with scaling
GPU frequency. Also since the icc path voting is handled completely
in the opp driver, remove the icc_path handle and its usage in the
drm driver.

Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index b547339..6fbfd7d 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -123,7 +123,7 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp)
 
 	if (!gmu->legacy) {
 		a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
-		icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
+		dev_pm_opp_set_bw(&gpu->pdev->dev, opp);
 		return;
 	}
 
@@ -149,11 +149,7 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp)
 	if (ret)
 		dev_err(gmu->dev, "GMU set GPU frequency error: %d\n", ret);
 
-	/*
-	 * Eventually we will want to scale the path vote with the frequency but
-	 * for now leave it at max so that the performance is nominal.
-	 */
-	icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
+	dev_pm_opp_set_bw(&gpu->pdev->dev, opp);
 }
 
 unsigned long a6xx_gmu_get_freq(struct msm_gpu *gpu)
@@ -840,6 +836,19 @@ static void a6xx_gmu_set_initial_freq(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
 	dev_pm_opp_put(gpu_opp);
 }
 
+static void a6xx_gmu_set_initial_bw(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
+{
+	struct dev_pm_opp *gpu_opp;
+	unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index];
+
+	gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true);
+	if (IS_ERR_OR_NULL(gpu_opp))
+		return;
+
+	dev_pm_opp_set_bw(&gpu->pdev->dev, gpu_opp);
+	dev_pm_opp_put(gpu_opp);
+}
+
 int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
 {
 	struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
@@ -864,7 +873,7 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
 	}
 
 	/* Set the bus quota to a reasonable value for boot */
-	icc_set_bw(gpu->icc_path, 0, MBps_to_icc(3072));
+	a6xx_gmu_set_initial_bw(gpu, gmu);
 
 	/* Enable the GMU interrupt */
 	gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_CLR, ~0);
@@ -1040,7 +1049,7 @@ int a6xx_gmu_stop(struct a6xx_gpu *a6xx_gpu)
 		a6xx_gmu_shutdown(gmu);
 
 	/* Remove the bus vote */
-	icc_set_bw(gpu->icc_path, 0, 0);
+	dev_pm_opp_set_bw(&gpu->pdev->dev, NULL);
 
 	/*
 	 * Make sure the GX domain is off before turning off the GMU (CX)
-- 
2.7.4

Re: [Freedreno] [PATCH v4 4/7] drm: msm: a6xx: use dev_pm_opp_set_bw to scale DDR

[Rob Clark]

On Thu, Jul 9, 2020 at 1:01 PM Akhil P Oommen <akhilpo@codeaurora.org> wrote:
>
> From: Sharat Masetty <smasetty@codeaurora.org>
>
> This patches replaces the previously used static DDR vote and uses
> dev_pm_opp_set_bw() to scale GPU->DDR bandwidth along with scaling
> GPU frequency. Also since the icc path voting is handled completely
> in the opp driver, remove the icc_path handle and its usage in the
> drm driver.
>
> Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
> Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
> ---
>  drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 25 +++++++++++++++++--------
>  1 file changed, 17 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
> index b547339..6fbfd7d 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
> @@ -123,7 +123,7 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp)
>
>         if (!gmu->legacy) {
>                 a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
> -               icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
> +               dev_pm_opp_set_bw(&gpu->pdev->dev, opp);

What is the status of the patch to add dev_pm_opp_set_bw()?  If it is
ready to go, and I get an ack-by from the OPP maintainer, I suppose I
could merge it via drm/msm.

Otherwise should we consider pulling in a private copy of it into
drm/msm (and then drop it to use the helper in, hopefully, the next
cycle)?

I'm pulling the patches preceding this one into msm-next-staging to do
some testing.  And the dt patches following this one would normally
get merged via Bjorn.  At the moment, I'm not sure what to do with
this one.

BR,
-R

>                 return;
>         }
>
> @@ -149,11 +149,7 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp)
>         if (ret)
>                 dev_err(gmu->dev, "GMU set GPU frequency error: %d\n", ret);
>
> -       /*
> -        * Eventually we will want to scale the path vote with the frequency but
> -        * for now leave it at max so that the performance is nominal.
> -        */
> -       icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
> +       dev_pm_opp_set_bw(&gpu->pdev->dev, opp);
>  }
>
>  unsigned long a6xx_gmu_get_freq(struct msm_gpu *gpu)
> @@ -840,6 +836,19 @@ static void a6xx_gmu_set_initial_freq(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
>         dev_pm_opp_put(gpu_opp);
>  }
>
> +static void a6xx_gmu_set_initial_bw(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
> +{
> +       struct dev_pm_opp *gpu_opp;
> +       unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index];
> +
> +       gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true);
> +       if (IS_ERR_OR_NULL(gpu_opp))
> +               return;
> +
> +       dev_pm_opp_set_bw(&gpu->pdev->dev, gpu_opp);
> +       dev_pm_opp_put(gpu_opp);
> +}
> +
>  int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
>  {
>         struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
> @@ -864,7 +873,7 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
>         }
>
>         /* Set the bus quota to a reasonable value for boot */
> -       icc_set_bw(gpu->icc_path, 0, MBps_to_icc(3072));
> +       a6xx_gmu_set_initial_bw(gpu, gmu);
>
>         /* Enable the GMU interrupt */
>         gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_CLR, ~0);
> @@ -1040,7 +1049,7 @@ int a6xx_gmu_stop(struct a6xx_gpu *a6xx_gpu)
>                 a6xx_gmu_shutdown(gmu);
>
>         /* Remove the bus vote */
> -       icc_set_bw(gpu->icc_path, 0, 0);
> +       dev_pm_opp_set_bw(&gpu->pdev->dev, NULL);
>
>         /*
>          * Make sure the GX domain is off before turning off the GMU (CX)
> --
> 2.7.4
>
> _______________________________________________
> Freedreno mailing list
> Freedreno@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/freedreno

Re: [Freedreno] [PATCH v4 4/7] drm: msm: a6xx: use dev_pm_opp_set_bw to scale DDR

[Akhil P Oommen]

On 7/11/2020 1:11 AM, Rob Clark wrote:
> On Thu, Jul 9, 2020 at 1:01 PM Akhil P Oommen <akhilpo@codeaurora.org> wrote:
>> From: Sharat Masetty <smasetty@codeaurora.org>
>>
>> This patches replaces the previously used static DDR vote and uses
>> dev_pm_opp_set_bw() to scale GPU->DDR bandwidth along with scaling
>> GPU frequency. Also since the icc path voting is handled completely
>> in the opp driver, remove the icc_path handle and its usage in the
>> drm driver.
>>
>> Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
>> Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
>> ---
>>   drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 25 +++++++++++++++++--------
>>   1 file changed, 17 insertions(+), 8 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
>> index b547339..6fbfd7d 100644
>> --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
>> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
>> @@ -123,7 +123,7 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp)
>>
>>          if (!gmu->legacy) {
>>                  a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
>> -               icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
>> +               dev_pm_opp_set_bw(&gpu->pdev->dev, opp);
> What is the status of the patch to add dev_pm_opp_set_bw()?  If it is
> ready to go, and I get an ack-by from the OPP maintainer, I suppose I
> could merge it via drm/msm.
>
> Otherwise should we consider pulling in a private copy of it into
> drm/msm (and then drop it to use the helper in, hopefully, the next
> cycle)?
>
> I'm pulling the patches preceding this one into msm-next-staging to do
> some testing.  And the dt patches following this one would normally
> get merged via Bjorn.  At the moment, I'm not sure what to do with
> this one.
>
> BR,
> -R
I see Sibi's patch is already picked in opp/linux-next branch.
https://kernel.googlesource.com/pub/scm/linux/kernel/git/vireshk/pm/+/b466542f331e221a3628c1cfe5ccff307d7d787f 


Thanks,
-Akhil

>>                  return;
>>          }
>>
>> @@ -149,11 +149,7 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp)
>>          if (ret)
>>                  dev_err(gmu->dev, "GMU set GPU frequency error: %d\n", ret);
>>
>> -       /*
>> -        * Eventually we will want to scale the path vote with the frequency but
>> -        * for now leave it at max so that the performance is nominal.
>> -        */
>> -       icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
>> +       dev_pm_opp_set_bw(&gpu->pdev->dev, opp);
>>   }
>>
>>   unsigned long a6xx_gmu_get_freq(struct msm_gpu *gpu)
>> @@ -840,6 +836,19 @@ static void a6xx_gmu_set_initial_freq(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
>>          dev_pm_opp_put(gpu_opp);
>>   }
>>
>> +static void a6xx_gmu_set_initial_bw(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
>> +{
>> +       struct dev_pm_opp *gpu_opp;
>> +       unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index];
>> +
>> +       gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true);
>> +       if (IS_ERR_OR_NULL(gpu_opp))
>> +               return;
>> +
>> +       dev_pm_opp_set_bw(&gpu->pdev->dev, gpu_opp);
>> +       dev_pm_opp_put(gpu_opp);
>> +}
>> +
>>   int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
>>   {
>>          struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
>> @@ -864,7 +873,7 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
>>          }
>>
>>          /* Set the bus quota to a reasonable value for boot */
>> -       icc_set_bw(gpu->icc_path, 0, MBps_to_icc(3072));
>> +       a6xx_gmu_set_initial_bw(gpu, gmu);
>>
>>          /* Enable the GMU interrupt */
>>          gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_CLR, ~0);
>> @@ -1040,7 +1049,7 @@ int a6xx_gmu_stop(struct a6xx_gpu *a6xx_gpu)
>>                  a6xx_gmu_shutdown(gmu);
>>
>>          /* Remove the bus vote */
>> -       icc_set_bw(gpu->icc_path, 0, 0);
>> +       dev_pm_opp_set_bw(&gpu->pdev->dev, NULL);
>>
>>          /*
>>           * Make sure the GX domain is off before turning off the GMU (CX)
>> --
>> 2.7.4
>>
>> _______________________________________________
>> Freedreno mailing list
>> Freedreno@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/freedreno

Re: [Freedreno] [PATCH v4 4/7] drm: msm: a6xx: use dev_pm_opp_set_bw to scale DDR

[Rob Clark]

On Fri, Jul 10, 2020 at 2:03 PM Akhil P Oommen <akhilpo@codeaurora.org> wrote:
>
>
> On 7/11/2020 1:11 AM, Rob Clark wrote:
> > On Thu, Jul 9, 2020 at 1:01 PM Akhil P Oommen <akhilpo@codeaurora.org> wrote:
> >> From: Sharat Masetty <smasetty@codeaurora.org>
> >>
> >> This patches replaces the previously used static DDR vote and uses
> >> dev_pm_opp_set_bw() to scale GPU->DDR bandwidth along with scaling
> >> GPU frequency. Also since the icc path voting is handled completely
> >> in the opp driver, remove the icc_path handle and its usage in the
> >> drm driver.
> >>
> >> Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
> >> Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
> >> ---
> >>   drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 25 +++++++++++++++++--------
> >>   1 file changed, 17 insertions(+), 8 deletions(-)
> >>
> >> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
> >> index b547339..6fbfd7d 100644
> >> --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
> >> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
> >> @@ -123,7 +123,7 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp)
> >>
> >>          if (!gmu->legacy) {
> >>                  a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
> >> -               icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
> >> +               dev_pm_opp_set_bw(&gpu->pdev->dev, opp);
> > What is the status of the patch to add dev_pm_opp_set_bw()?  If it is
> > ready to go, and I get an ack-by from the OPP maintainer, I suppose I
> > could merge it via drm/msm.
> >
> > Otherwise should we consider pulling in a private copy of it into
> > drm/msm (and then drop it to use the helper in, hopefully, the next
> > cycle)?
> >
> > I'm pulling the patches preceding this one into msm-next-staging to do
> > some testing.  And the dt patches following this one would normally
> > get merged via Bjorn.  At the moment, I'm not sure what to do with
> > this one.
> >
> > BR,
> > -R
> I see Sibi's patch is already picked in opp/linux-next branch.
> https://kernel.googlesource.com/pub/scm/linux/kernel/git/vireshk/pm/+/b466542f331e221a3628c1cfe5ccff307d7d787f
>

ok, I guess we can try and do a 2nd late pull-req for msm-next, after
the opp pull-req lands..

BR,
-R

>
> Thanks,
> -Akhil
>
> >>                  return;
> >>          }
> >>
> >> @@ -149,11 +149,7 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp)
> >>          if (ret)
> >>                  dev_err(gmu->dev, "GMU set GPU frequency error: %d\n", ret);
> >>
> >> -       /*
> >> -        * Eventually we will want to scale the path vote with the frequency but
> >> -        * for now leave it at max so that the performance is nominal.
> >> -        */
> >> -       icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
> >> +       dev_pm_opp_set_bw(&gpu->pdev->dev, opp);
> >>   }
> >>
> >>   unsigned long a6xx_gmu_get_freq(struct msm_gpu *gpu)
> >> @@ -840,6 +836,19 @@ static void a6xx_gmu_set_initial_freq(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
> >>          dev_pm_opp_put(gpu_opp);
> >>   }
> >>
> >> +static void a6xx_gmu_set_initial_bw(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
> >> +{
> >> +       struct dev_pm_opp *gpu_opp;
> >> +       unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index];
> >> +
> >> +       gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true);
> >> +       if (IS_ERR_OR_NULL(gpu_opp))
> >> +               return;
> >> +
> >> +       dev_pm_opp_set_bw(&gpu->pdev->dev, gpu_opp);
> >> +       dev_pm_opp_put(gpu_opp);
> >> +}
> >> +
> >>   int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
> >>   {
> >>          struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
> >> @@ -864,7 +873,7 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
> >>          }
> >>
> >>          /* Set the bus quota to a reasonable value for boot */
> >> -       icc_set_bw(gpu->icc_path, 0, MBps_to_icc(3072));
> >> +       a6xx_gmu_set_initial_bw(gpu, gmu);
> >>
> >>          /* Enable the GMU interrupt */
> >>          gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_CLR, ~0);
> >> @@ -1040,7 +1049,7 @@ int a6xx_gmu_stop(struct a6xx_gpu *a6xx_gpu)
> >>                  a6xx_gmu_shutdown(gmu);
> >>
> >>          /* Remove the bus vote */
> >> -       icc_set_bw(gpu->icc_path, 0, 0);
> >> +       dev_pm_opp_set_bw(&gpu->pdev->dev, NULL);
> >>
> >>          /*
> >>           * Make sure the GX domain is off before turning off the GMU (CX)
> >> --
> >> 2.7.4
> >>
> >> _______________________________________________
> >> Freedreno mailing list
> >> Freedreno@lists.freedesktop.org
> >> https://lists.freedesktop.org/mailman/listinfo/freedreno

[PATCH v4 5/7] arm64: dts: qcom: SDM845: Enable GPU DDR bw scaling

[Akhil P Oommen]

From: Sharat Masetty <smasetty@codeaurora.org>

This patch adds the interconnects property for the gpu node and the
opp-peak-kBps property to the opps of the gpu opp table. This should
help enable DDR bandwidth scaling dynamically and proportionally to the
GPU frequency.

Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
---
 arch/arm64/boot/dts/qcom/sdm845.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
index 8eb5a31..5e9561a 100644
--- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
@@ -3515,42 +3515,51 @@
 
 			qcom,gmu = <&gmu>;
 
+			interconnects = <&mem_noc MASTER_GFX3D &mem_noc SLAVE_EBI1>;
+
 			gpu_opp_table: opp-table {
 				compatible = "operating-points-v2";
 
 				opp-710000000 {
 					opp-hz = /bits/ 64 <710000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_TURBO_L1>;
+					opp-peak-kBps = <7216000>;
 				};
 
 				opp-675000000 {
 					opp-hz = /bits/ 64 <675000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_TURBO>;
+					opp-peak-kBps = <7216000>;
 				};
 
 				opp-596000000 {
 					opp-hz = /bits/ 64 <596000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>;
+					opp-peak-kBps = <6220000>;
 				};
 
 				opp-520000000 {
 					opp-hz = /bits/ 64 <520000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
+					opp-peak-kBps = <6220000>;
 				};
 
 				opp-414000000 {
 					opp-hz = /bits/ 64 <414000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
+					opp-peak-kBps = <4068000>;
 				};
 
 				opp-342000000 {
 					opp-hz = /bits/ 64 <342000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
+					opp-peak-kBps = <2724000>;
 				};
 
 				opp-257000000 {
 					opp-hz = /bits/ 64 <257000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+					opp-peak-kBps = <1648000>;
 				};
 			};
 		};
-- 
2.7.4

[PATCH v4 6/7] arm64: dts: qcom: sc7180: Add interconnects property for GPU

[Akhil P Oommen]

From: Sharat Masetty <smasetty@codeaurora.org>

This patch adds the interconnects property to the GPU node. This enables
the GPU->DDR path bandwidth voting.

Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
---
 arch/arm64/boot/dts/qcom/sc7180.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index 31b9217..a567297 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -1470,6 +1470,8 @@
 			operating-points-v2 = <&gpu_opp_table>;
 			qcom,gmu = <&gmu>;
 
+			interconnects = <&gem_noc MASTER_GFX3D &mc_virt SLAVE_EBI1>;
+
 			gpu_opp_table: opp-table {
 				compatible = "operating-points-v2";
 
-- 
2.7.4

[PATCH v4 7/7] arm64: dts: qcom: sc7180: Add opp-peak-kBps to GPU opp

[Akhil P Oommen]

From: Sharat Masetty <smasetty@codeaurora.org>

Add opp-peak-kBps bindings to the GPU opp table, listing the peak
GPU -> DDR bandwidth requirement for each opp level. This will be
used to scale the DDR bandwidth along with the GPU frequency dynamically.

Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
---
 arch/arm64/boot/dts/qcom/sc7180.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index a567297..8567e9e 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -1478,36 +1478,43 @@
 				opp-800000000 {
 					opp-hz = /bits/ 64 <800000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_TURBO>;
+					opp-peak-kBps = <8532000>;
 				};
 
 				opp-650000000 {
 					opp-hz = /bits/ 64 <650000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>;
+					opp-peak-kBps = <7216000>;
 				};
 
 				opp-565000000 {
 					opp-hz = /bits/ 64 <565000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
+					opp-peak-kBps = <5412000>;
 				};
 
 				opp-430000000 {
 					opp-hz = /bits/ 64 <430000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
+					opp-peak-kBps = <5412000>;
 				};
 
 				opp-355000000 {
 					opp-hz = /bits/ 64 <355000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
+					opp-peak-kBps = <3072000>;
 				};
 
 				opp-267000000 {
 					opp-hz = /bits/ 64 <267000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+					opp-peak-kBps = <3072000>;
 				};
 
 				opp-180000000 {
 					opp-hz = /bits/ 64 <180000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>;
+					opp-peak-kBps = <1804000>;
 				};
 			};
 		};
-- 
2.7.4