* [PATCH] ARM: dts: add 533 MHz step to p4note GPU opp table
@ 2022-01-29 22:14 Martin Jücker
2022-01-31 8:54 ` Krzysztof Kozlowski
0 siblings, 1 reply; 5+ messages in thread
From: Martin Jücker @ 2022-01-29 22:14 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, devicetree, linux-arm-kernel,
linux-samsung-soc, linux-kernel
Cc: Martin Jücker
The p4note devices support 533 MHz GPU speed, so let's make use of it.
Signed-off-by: Martin Jücker <martin.juecker@gmail.com>
---
arch/arm/boot/dts/exynos4412-p4note.dtsi | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/arm/boot/dts/exynos4412-p4note.dtsi b/arch/arm/boot/dts/exynos4412-p4note.dtsi
index 4ae6eb3091c4..d277b2337ae0 100644
--- a/arch/arm/boot/dts/exynos4412-p4note.dtsi
+++ b/arch/arm/boot/dts/exynos4412-p4note.dtsi
@@ -355,6 +355,13 @@ &gpu {
status = "okay";
};
+&gpu_opp_table {
+ opp-533000000 {
+ opp-hz = /bits/ 64 <533000000>;
+ opp-microvolt = <1075000>;
+ };
+};
+
&hsotg {
vusb_a-supply = <&ldo12_reg>;
dr_mode = "peripheral";
--
2.25.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] ARM: dts: add 533 MHz step to p4note GPU opp table
2022-01-29 22:14 [PATCH] ARM: dts: add 533 MHz step to p4note GPU opp table Martin Jücker
@ 2022-01-31 8:54 ` Krzysztof Kozlowski
2022-01-31 11:36 ` Martin Jücker
2022-01-31 12:15 ` Martin Jücker
0 siblings, 2 replies; 5+ messages in thread
From: Krzysztof Kozlowski @ 2022-01-31 8:54 UTC (permalink / raw)
To: Martin Jücker, Rob Herring, devicetree, linux-arm-kernel,
linux-samsung-soc, linux-kernel
On 29/01/2022 23:14, Martin Jücker wrote:
> The p4note devices support 533 MHz GPU speed, so let's make use of it.
>
If there is going to be resend, please add prefix "exynos:" in subject.
Just like other commits (git log --oneline arch/arm/boot/dts/exynos*).
> Signed-off-by: Martin Jücker <martin.juecker@gmail.com>
> ---
> arch/arm/boot/dts/exynos4412-p4note.dtsi | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos4412-p4note.dtsi b/arch/arm/boot/dts/exynos4412-p4note.dtsi
> index 4ae6eb3091c4..d277b2337ae0 100644
> --- a/arch/arm/boot/dts/exynos4412-p4note.dtsi
> +++ b/arch/arm/boot/dts/exynos4412-p4note.dtsi
> @@ -355,6 +355,13 @@ &gpu {
> status = "okay";
> };
>
> +&gpu_opp_table {
> + opp-533000000 {
> + opp-hz = /bits/ 64 <533000000>;
> + opp-microvolt = <1075000>;
> + };
> +};
This looks like Exynos4412 Prime. Please check also CPU frequencies and
if they match, just include exynos4412-prime.dtsi (like Odroid U3).
> +
> &hsotg {
> vusb_a-supply = <&ldo12_reg>;
> dr_mode = "peripheral";
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] ARM: dts: add 533 MHz step to p4note GPU opp table
2022-01-31 8:54 ` Krzysztof Kozlowski
@ 2022-01-31 11:36 ` Martin Jücker
2022-01-31 12:15 ` Martin Jücker
1 sibling, 0 replies; 5+ messages in thread
From: Martin Jücker @ 2022-01-31 11:36 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: Rob Herring, devicetree, linux-arm-kernel, linux-samsung-soc,
linux-kernel, Martin Jücker
On Mon, Jan 31, 2022 at 09:54:00AM +0100, Krzysztof Kozlowski wrote:
> On 29/01/2022 23:14, Martin Jücker wrote:
> > The p4note devices support 533 MHz GPU speed, so let's make use of it.
> >
>
> If there is going to be resend, please add prefix "exynos:" in subject.
> Just like other commits (git log --oneline arch/arm/boot/dts/exynos*).
>
Okay.
> > Signed-off-by: Martin Jücker <martin.juecker@gmail.com>
> > ---
> > arch/arm/boot/dts/exynos4412-p4note.dtsi | 7 +++++++
> > 1 file changed, 7 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/exynos4412-p4note.dtsi b/arch/arm/boot/dts/exynos4412-p4note.dtsi
> > index 4ae6eb3091c4..d277b2337ae0 100644
> > --- a/arch/arm/boot/dts/exynos4412-p4note.dtsi
> > +++ b/arch/arm/boot/dts/exynos4412-p4note.dtsi
> > @@ -355,6 +355,13 @@ &gpu {
> > status = "okay";
> > };
> >
> > +&gpu_opp_table {
> > + opp-533000000 {
> > + opp-hz = /bits/ 64 <533000000>;
> > + opp-microvolt = <1075000>;
> > + };
> > +};
>
> This looks like Exynos4412 Prime. Please check also CPU frequencies and
> if they match, just include exynos4412-prime.dtsi (like Odroid U3).
>
I thought so as well, but unfortunately it's not. The chip id is
0xe4412211 and according to the vendor kernel, the prime version would
need to have the last two digits being 0x20 or higher. See:
https://github.com/Viciouss/samsung_p4note_kernel_backup/blob/da306e1846bb4b9682f46be1b23b05d6fbebffba/arch/arm/mach-exynos/cpufreq-4x12.c#L619
On the other hand, this kernel has the 533 MHz step unlocked for all
versions:
https://github.com/Viciouss/samsung_p4note_kernel_backup/blob/da306e1846bb4b9682f46be1b23b05d6fbebffba/drivers/gpu/mali400/r3p2/mali/platform/pegasus-m400/exynos4_pmm.c#L88
> > +
> > &hsotg {
> > vusb_a-supply = <&ldo12_reg>;
> > dr_mode = "peripheral";
>
>
> Best regards,
> Krzysztof
Kind Regards
Martin
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] ARM: dts: add 533 MHz step to p4note GPU opp table
2022-01-31 8:54 ` Krzysztof Kozlowski
2022-01-31 11:36 ` Martin Jücker
@ 2022-01-31 12:15 ` Martin Jücker
2022-01-31 12:24 ` Krzysztof Kozlowski
1 sibling, 1 reply; 5+ messages in thread
From: Martin Jücker @ 2022-01-31 12:15 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: Rob Herring, devicetree, linux-arm-kernel, linux-samsung-soc,
linux-kernel, Martin Jücker
On Mon, Jan 31, 2022 at 09:54:00AM +0100, Krzysztof Kozlowski wrote:
> On 29/01/2022 23:14, Martin Jücker wrote:
> > The p4note devices support 533 MHz GPU speed, so let's make use of it.
> >
>
> If there is going to be resend, please add prefix "exynos:" in subject.
> Just like other commits (git log --oneline arch/arm/boot/dts/exynos*).
>
> > Signed-off-by: Martin Jücker <martin.juecker@gmail.com>
> > ---
> > arch/arm/boot/dts/exynos4412-p4note.dtsi | 7 +++++++
> > 1 file changed, 7 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/exynos4412-p4note.dtsi b/arch/arm/boot/dts/exynos4412-p4note.dtsi
> > index 4ae6eb3091c4..d277b2337ae0 100644
> > --- a/arch/arm/boot/dts/exynos4412-p4note.dtsi
> > +++ b/arch/arm/boot/dts/exynos4412-p4note.dtsi
> > @@ -355,6 +355,13 @@ &gpu {
> > status = "okay";
> > };
> >
> > +&gpu_opp_table {
> > + opp-533000000 {
> > + opp-hz = /bits/ 64 <533000000>;
> > + opp-microvolt = <1075000>;
> > + };
> > +};
>
> This looks like Exynos4412 Prime. Please check also CPU frequencies and
> if they match, just include exynos4412-prime.dtsi (like Odroid U3).
>
> > +
> > &hsotg {
> > vusb_a-supply = <&ldo12_reg>;
> > dr_mode = "peripheral";
>
>
> Best regards,
> Krzysztof
I just noticed, that I overlooked a condition in the code which
decreases the step count by one which eliminates the 533 MHz step.
Please ignore this patch.
Kind Regards
Martin
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] ARM: dts: add 533 MHz step to p4note GPU opp table
2022-01-31 12:15 ` Martin Jücker
@ 2022-01-31 12:24 ` Krzysztof Kozlowski
0 siblings, 0 replies; 5+ messages in thread
From: Krzysztof Kozlowski @ 2022-01-31 12:24 UTC (permalink / raw)
To: Martin Jücker
Cc: Rob Herring, devicetree, linux-arm-kernel, linux-samsung-soc,
linux-kernel
On 31/01/2022 13:15, Martin Jücker wrote:
> On Mon, Jan 31, 2022 at 09:54:00AM +0100, Krzysztof Kozlowski wrote:
>> On 29/01/2022 23:14, Martin Jücker wrote:
>>> The p4note devices support 533 MHz GPU speed, so let's make use of it.
>>>
>>
>> If there is going to be resend, please add prefix "exynos:" in subject.
>> Just like other commits (git log --oneline arch/arm/boot/dts/exynos*).
>>
>>> Signed-off-by: Martin Jücker <martin.juecker@gmail.com>
>>> ---
>>> arch/arm/boot/dts/exynos4412-p4note.dtsi | 7 +++++++
>>> 1 file changed, 7 insertions(+)
>>>
>>> diff --git a/arch/arm/boot/dts/exynos4412-p4note.dtsi b/arch/arm/boot/dts/exynos4412-p4note.dtsi
>>> index 4ae6eb3091c4..d277b2337ae0 100644
>>> --- a/arch/arm/boot/dts/exynos4412-p4note.dtsi
>>> +++ b/arch/arm/boot/dts/exynos4412-p4note.dtsi
>>> @@ -355,6 +355,13 @@ &gpu {
>>> status = "okay";
>>> };
>>>
>>> +&gpu_opp_table {
>>> + opp-533000000 {
>>> + opp-hz = /bits/ 64 <533000000>;
>>> + opp-microvolt = <1075000>;
>>> + };
>>> +};
>>
>> This looks like Exynos4412 Prime. Please check also CPU frequencies and
>> if they match, just include exynos4412-prime.dtsi (like Odroid U3).
>>
>>> +
>>> &hsotg {
>>> vusb_a-supply = <&ldo12_reg>;
>>> dr_mode = "peripheral";
>>
>>
>> Best regards,
>> Krzysztof
>
> I just noticed, that I overlooked a condition in the code which
> decreases the step count by one which eliminates the 533 MHz step.
> Please ignore this patch.
Yeah:
if(samsung_rev() < EXYNOS4412_REV_2_0)
step_num = MALI_DVFS_STEPS - 1;
Your case, although possible, would be unlikely.
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 5+ messages in thread
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2022-01-29 22:14 [PATCH] ARM: dts: add 533 MHz step to p4note GPU opp table Martin Jücker
2022-01-31 8:54 ` Krzysztof Kozlowski
2022-01-31 11:36 ` Martin Jücker
2022-01-31 12:15 ` Martin Jücker
2022-01-31 12:24 ` Krzysztof Kozlowski
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