[PATCH v1 0/2] add support of stm32mp157f-dk2 board

[PATCH v1 0/2] add support of stm32mp157f-dk2 board

[Himanshu Bhavani]

Himanshu Bhavani (2):
  ARM: dts: stm32: add support of stm32mp157f-dk2 board
  dt-bindings: arm: stm32: add STM32MP157F-DK2 board compatible

 .../devicetree/bindings/arm/stm32/stm32.yaml      |  1 +
 arch/arm/boot/dts/st/stm32mp157f-dk2.dts          | 15 +++++++++++++++
 2 files changed, 16 insertions(+)
 create mode 100644 arch/arm/boot/dts/st/stm32mp157f-dk2.dts

-- 
2.34.1

[PATCH v1 1/2] ARM: dts: stm32: add support of stm32mp157f-dk2 board

[Himanshu Bhavani]

STM32MP157F is similar to the STM32MP157C, so reuse the existing
stm32mp157c-dk2.dts as a base for the STM32MP157F-DK2 board.

Datasheet: https://www.st.com/resource/en/data_brief/stm32mp157f-dk2.pdf
Signed-off-by: Himanshu Bhavani <himanshu.bhavani@siliconsignals.io>
---
 arch/arm/boot/dts/st/Makefile            |  3 ++-
 arch/arm/boot/dts/st/stm32mp157f-dk2.dts | 15 +++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm/boot/dts/st/stm32mp157f-dk2.dts

diff --git a/arch/arm/boot/dts/st/Makefile b/arch/arm/boot/dts/st/Makefile
index 60d55516f723..38179638e5eb 100644
--- a/arch/arm/boot/dts/st/Makefile
+++ b/arch/arm/boot/dts/st/Makefile
@@ -70,7 +70,8 @@ dtb-$(CONFIG_ARCH_STM32) += \
 	stm32mp157c-lxa-tac-gen2.dtb \
 	stm32mp157c-odyssey.dtb \
 	stm32mp157c-osd32mp1-red.dtb \
-	stm32mp157c-phycore-stm32mp1-3.dtb
+	stm32mp157c-phycore-stm32mp1-3.dtb \
+	stm32mp157f-dk2.dtb
 dtb-$(CONFIG_ARCH_U8500) += \
 	ste-snowball.dtb \
 	ste-hrefprev60-stuib.dtb \
diff --git a/arch/arm/boot/dts/st/stm32mp157f-dk2.dts b/arch/arm/boot/dts/st/stm32mp157f-dk2.dts
new file mode 100644
index 000000000000..ab406b2c44c1
--- /dev/null
+++ b/arch/arm/boot/dts/st/stm32mp157f-dk2.dts
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (C) 2025 Silicon Signals Pvt. Ltd.
+ *
+ * Author: Himanshu Bhavani <himanshu.bhavani@siliconsignals.io>
+ */
+
+/dts-v1/;
+
+#include "stm32mp157c-dk2.dts"
+
+/ {
+	model = "STMicroelectronics STM32MP157F-DK2 Discovery Board";
+	compatible = "st,stm32mp157f-dk2", "st,stm32mp157";
+};
-- 
2.34.1

[PATCH v1 2/2] dt-bindings: arm: stm32: add STM32MP157F-DK2 board compatible

[Himanshu Bhavani]

Add the "st,stm32mp157f-dk2" compatible string to the STM32 SoC
bindings. The MP157F is functionally similar to the MP157C.

Signed-off-by: Himanshu Bhavani <himanshu.bhavani@siliconsignals.io>
---
 Documentation/devicetree/bindings/arm/stm32/stm32.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/arm/stm32/stm32.yaml b/Documentation/devicetree/bindings/arm/stm32/stm32.yaml
index 5fee2f38ff25..ddc9310e7d26 100644
--- a/Documentation/devicetree/bindings/arm/stm32/stm32.yaml
+++ b/Documentation/devicetree/bindings/arm/stm32/stm32.yaml
@@ -117,6 +117,7 @@ properties:
               - st,stm32mp157a-dk1-scmi
               - st,stm32mp157c-dk2
               - st,stm32mp157c-dk2-scmi
+              - st,stm32mp157f-dk2
           - const: st,stm32mp157
 
       - items:
-- 
2.34.1

Re: [PATCH v1 1/2] ARM: dts: stm32: add support of stm32mp157f-dk2 board

[Alexandre TORGUE]

Hi Himanshu

On 5/24/25 12:03, Himanshu Bhavani wrote:
> STM32MP157F is similar to the STM32MP157C, so reuse the existing
> stm32mp157c-dk2.dts as a base for the STM32MP157F-DK2 board.
> 
> Datasheet: https://www.st.com/resource/en/data_brief/stm32mp157f-dk2.pdf
> Signed-off-by: Himanshu Bhavani <himanshu.bhavani@siliconsignals.io>
> ---
>   arch/arm/boot/dts/st/Makefile            |  3 ++-
>   arch/arm/boot/dts/st/stm32mp157f-dk2.dts | 15 +++++++++++++++
>   2 files changed, 17 insertions(+), 1 deletion(-)
>   create mode 100644 arch/arm/boot/dts/st/stm32mp157f-dk2.dts
> 
> diff --git a/arch/arm/boot/dts/st/Makefile b/arch/arm/boot/dts/st/Makefile
> index 60d55516f723..38179638e5eb 100644
> --- a/arch/arm/boot/dts/st/Makefile
> +++ b/arch/arm/boot/dts/st/Makefile
> @@ -70,7 +70,8 @@ dtb-$(CONFIG_ARCH_STM32) += \
>   	stm32mp157c-lxa-tac-gen2.dtb \
>   	stm32mp157c-odyssey.dtb \
>   	stm32mp157c-osd32mp1-red.dtb \
> -	stm32mp157c-phycore-stm32mp1-3.dtb
> +	stm32mp157c-phycore-stm32mp1-3.dtb \
> +	stm32mp157f-dk2.dtb
>   dtb-$(CONFIG_ARCH_U8500) += \
>   	ste-snowball.dtb \
>   	ste-hrefprev60-stuib.dtb \
> diff --git a/arch/arm/boot/dts/st/stm32mp157f-dk2.dts b/arch/arm/boot/dts/st/stm32mp157f-dk2.dts
> new file mode 100644
> index 000000000000..ab406b2c44c1
> --- /dev/null
> +++ b/arch/arm/boot/dts/st/stm32mp157f-dk2.dts
> @@ -0,0 +1,15 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
> +/*
> + * Copyright (C) 2025 Silicon Signals Pvt. Ltd.
> + *
> + * Author: Himanshu Bhavani <himanshu.bhavani@siliconsignals.io>
> + */
> +
> +/dts-v1/;
> +
> +#include "stm32mp157c-dk2.dts"

In this case what is the aim of this series if you just use stm32mp157C 
devicetree ?

ST people (mainly Amélie) are preparing a full support of 
STM32MP157F-DK2 leveraging the F variant compare to the C variant. 
Series will be sent this week.

Regards
Alex

> +
> +/ {
> +	model = "STMicroelectronics STM32MP157F-DK2 Discovery Board";
> +	compatible = "st,stm32mp157f-dk2", "st,stm32mp157";
> +};

Re: [PATCH v1 2/2] dt-bindings: arm: stm32: add STM32MP157F-DK2 board compatible

[Conor Dooley]

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On Sat, May 24, 2025 at 03:33:14PM +0530, Himanshu Bhavani wrote:
> Add the "st,stm32mp157f-dk2" compatible string to the STM32 SoC
> bindings. The MP157F is functionally similar to the MP157C.
> 
> Signed-off-by: Himanshu Bhavani <himanshu.bhavani@siliconsignals.io>

Acked-by: Conor Dooley <conor.dooley@microchip.com>

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Re: [PATCH v1 1/2] ARM: dts: stm32: add support of stm32mp157f-dk2 board

[Himanshu Bhavani]

Hi Alexandre,

> Hi Himanshu
> 
> On 5/24/25 12:03, Himanshu Bhavani wrote:
> > STM32MP157F is similar to the STM32MP157C, so reuse the existing
> > stm32mp157c-dk2.dts as a base for the STM32MP157F-DK2 board.
> >
> > Datasheet: https://www.st.com/resource/en/data_brief/stm32mp157f-dk2.pdf
> > Signed-off-by: Himanshu Bhavani <himanshu.bhavani@siliconsignals.io>
> > ---
> >   arch/arm/boot/dts/st/Makefile            |  3 ++-
> >   arch/arm/boot/dts/st/stm32mp157f-dk2.dts | 15 +++++++++++++++
> >   2 files changed, 17 insertions(+), 1 deletion(-)
> >   create mode 100644 arch/arm/boot/dts/st/stm32mp157f-dk2.dts
> >
> > diff --git a/arch/arm/boot/dts/st/Makefile b/arch/arm/boot/dts/st/Makefile
> > index 60d55516f723..38179638e5eb 100644
> > --- a/arch/arm/boot/dts/st/Makefile
> > +++ b/arch/arm/boot/dts/st/Makefile
> > @@ -70,7 +70,8 @@ dtb-$(CONFIG_ARCH_STM32) += \
> >       stm32mp157c-lxa-tac-gen2.dtb \
> >       stm32mp157c-odyssey.dtb \
> >       stm32mp157c-osd32mp1-red.dtb \
> > -     stm32mp157c-phycore-stm32mp1-3.dtb
> > +     stm32mp157c-phycore-stm32mp1-3.dtb \
> > +     stm32mp157f-dk2.dtb
> >   dtb-$(CONFIG_ARCH_U8500) += \
> >       ste-snowball.dtb \
> >       ste-hrefprev60-stuib.dtb \
> > diff --git a/arch/arm/boot/dts/st/stm32mp157f-dk2.dts b/arch/arm/boot/dts/st/stm32mp157f-dk2.dts
> > new file mode 100644
> > index 000000000000..ab406b2c44c1
> > --- /dev/null
> > +++ b/arch/arm/boot/dts/st/stm32mp157f-dk2.dts
> > @@ -0,0 +1,15 @@
> > +// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
> > +/*
> > + * Copyright (C) 2025 Silicon Signals Pvt. Ltd.
> > + *
> > + * Author: Himanshu Bhavani <himanshu.bhavani@siliconsignals.io>
> > + */
> > +
> > +/dts-v1/;
> > +
> > +#include "stm32mp157c-dk2.dts"
> 
> In this case what is the aim of this series if you just use stm32mp157C
> devicetree ?

This patch series aims to add support for the STM32MP157F board device 
tree. The primary motivation is to ensure that users working with the 
STM32MP157F variant have a reference DTS available. Currently, no such 
device tree exists, even though the STM32MP157F and STM32MP157C are 
largely similar.

> ST people (mainly Amélie) are preparing a full support of
> STM32MP157F-DK2 leveraging the F variant compare to the C variant.
> Series will be sent this week.

If ST is working on a dedicated DTS for the F variant, it's likely they are starting 
from the C variant as a base, this is exactly the approach I’ve taken here. At this 
stage, I have not included an SCMI-based version of the board since it hasn't 
been tested yet.

Please let me know if you have any further suggestions.


Best Regards,
Himanshu

> Regards
> Alex
> 
> > +
> > +/ {
> > +     model = "STMicroelectronics STM32MP157F-DK2 Discovery Board";
> > +     compatible = "st,stm32mp157f-dk2", "st,stm32mp157";
> > +};

Re: [PATCH v1 1/2] ARM: dts: stm32: add support of stm32mp157f-dk2 board

[Alexandre TORGUE]

Hi Himanshu

On 5/27/25 08:36, Himanshu Bhavani wrote:
> Hi Alexandre,
> 
>> Hi Himanshu
>>
>> On 5/24/25 12:03, Himanshu Bhavani wrote:
>>> STM32MP157F is similar to the STM32MP157C, so reuse the existing
>>> stm32mp157c-dk2.dts as a base for the STM32MP157F-DK2 board.
>>>
>>> Datasheet: https://www.st.com/resource/en/data_brief/stm32mp157f-dk2.pdf
>>> Signed-off-by: Himanshu Bhavani <himanshu.bhavani@siliconsignals.io>
>>> ---
>>>     arch/arm/boot/dts/st/Makefile            |  3 ++-
>>>     arch/arm/boot/dts/st/stm32mp157f-dk2.dts | 15 +++++++++++++++
>>>     2 files changed, 17 insertions(+), 1 deletion(-)
>>>     create mode 100644 arch/arm/boot/dts/st/stm32mp157f-dk2.dts
>>>
>>> diff --git a/arch/arm/boot/dts/st/Makefile b/arch/arm/boot/dts/st/Makefile
>>> index 60d55516f723..38179638e5eb 100644
>>> --- a/arch/arm/boot/dts/st/Makefile
>>> +++ b/arch/arm/boot/dts/st/Makefile
>>> @@ -70,7 +70,8 @@ dtb-$(CONFIG_ARCH_STM32) += \
>>>         stm32mp157c-lxa-tac-gen2.dtb \
>>>         stm32mp157c-odyssey.dtb \
>>>         stm32mp157c-osd32mp1-red.dtb \
>>> -     stm32mp157c-phycore-stm32mp1-3.dtb
>>> +     stm32mp157c-phycore-stm32mp1-3.dtb \
>>> +     stm32mp157f-dk2.dtb
>>>     dtb-$(CONFIG_ARCH_U8500) += \
>>>         ste-snowball.dtb \
>>>         ste-hrefprev60-stuib.dtb \
>>> diff --git a/arch/arm/boot/dts/st/stm32mp157f-dk2.dts b/arch/arm/boot/dts/st/stm32mp157f-dk2.dts
>>> new file mode 100644
>>> index 000000000000..ab406b2c44c1
>>> --- /dev/null
>>> +++ b/arch/arm/boot/dts/st/stm32mp157f-dk2.dts
>>> @@ -0,0 +1,15 @@
>>> +// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
>>> +/*
>>> + * Copyright (C) 2025 Silicon Signals Pvt. Ltd.
>>> + *
>>> + * Author: Himanshu Bhavani <himanshu.bhavani@siliconsignals.io>
>>> + */
>>> +
>>> +/dts-v1/;
>>> +
>>> +#include "stm32mp157c-dk2.dts"
>>
>> In this case what is the aim of this series if you just use stm32mp157C
>> devicetree ?
> 
> This patch series aims to add support for the STM32MP157F board device
> tree. The primary motivation is to ensure that users working with the
> STM32MP157F variant have a reference DTS available. Currently, no such
> device tree exists, even though the STM32MP157F and STM32MP157C are
> largely similar.
> 
>> ST people (mainly Amélie) are preparing a full support of
>> STM32MP157F-DK2 leveraging the F variant compare to the C variant.
>> Series will be sent this week.
> 
> If ST is working on a dedicated DTS for the F variant, it's likely they are starting
> from the C variant as a base, this is exactly the approach I’ve taken here. At this
> stage, I have not included an SCMI-based version of the board since it hasn't
> been tested yet.

Please have a look on:

https://lore.kernel.org/all/20250527-stm32mp157f-dk2-v1-0-8aef885a4928@foss.st.com/

The idea is to have the same approach than for STM32MP13 and STM32MP25 
relying on SCMI and preparing the add of F variant feature: DVFS/cpufreq.

regards
alex


> Please let me know if you have any further suggestions.
> 
> 
> Best Regards,
> Himanshu
> 
>> Regards
>> Alex
>>
>>> +
>>> +/ {
>>> +     model = "STMicroelectronics STM32MP157F-DK2 Discovery Board";
>>> +     compatible = "st,stm32mp157f-dk2", "st,stm32mp157";
>>> +};