From: Pascal Paillet <[email protected]>
Enable ARM SCMI regulator support.
Signed-off-by: Pascal Paillet <[email protected]>
---
arch/arm/configs/multi_v7_defconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index f0800f806b5f..524ca56f52d9 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -612,6 +612,7 @@ CONFIG_MFD_ACER_A500_EC=m
CONFIG_REGULATOR_ACT8865=y
CONFIG_REGULATOR_ACT8945A=y
CONFIG_REGULATOR_ANATOP=y
+CONFIG_REGULATOR_ARM_SCMI=y
CONFIG_REGULATOR_AB8500=y
CONFIG_REGULATOR_AS3711=y
CONFIG_REGULATOR_AS3722=y
--
2.25.1
On 12/07/2023 16:24, [email protected] wrote:
> From: Pascal Paillet <[email protected]>
>
> Enable ARM SCMI regulator support.
>
This we see from the diff. Please explain why, e.g. which boards use it.
Best regards,
Krzysztof
Hi,
On 7/12/23 21:25, Krzysztof Kozlowski wrote:
> On 12/07/2023 16:24, [email protected] wrote:
>> From: Pascal Paillet <[email protected]>
>>
>> Enable ARM SCMI regulator support.
>>
> This we see from the diff. Please explain why, e.g. which boards use it.
>
> Best regards,
> Krzysztof
The STM32MP platforms rely on OP-TEE to boot: Clocks and regulators are
handled in
the secure world by OP-TEE and exported to the non secure world (LINUX)
thanks to ARM SCMI protocol.
Today it is used in the ARMv7 STMicrolectronics stm32mp boards:
- for STM32MP13: stm32mp135f-dk
- the STM32MP15 boards with SCMI variant, introduced by commit 5b7e58313a77
("ARM: dts: stm32: Add SCMI version of STM32 boards (DK1/DK2/ED1/EV1)")
* stm32mp157c-ev1-scmi
* stm32mp157c-ed1-scmi
* stm32mp157c-dk2-scmi
* stm32mp157a-dk1-scmi
This SCMI server provide access to "secured" resources protected in SoC
(for example with RCC_SECFGR); the resources need to be available early
for these board and the SCMI server is associated with OP-TEE, already
activated by the commit 24c159793238 ("ARM: multi_v7_defconfig: Add
OPTEE support").
Regards
Patrick
> _______________________________________________
> linux-arm-kernel mailing list
> [email protected]
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
Hi Krzysztof
On 7/12/23 21:25, Krzysztof Kozlowski wrote:
> On 12/07/2023 16:24, [email protected] wrote:
>> From: Pascal Paillet <[email protected]>
>>
>> Enable ARM SCMI regulator support.
>>
>
> This we see from the diff. Please explain why, e.g. which boards use it.
>
> Best regards,
> Krzysztof
>
If you agree I will add some words explaining SCMI regulator on STM32
board in the commit message (As Patrick mentioned in his answer). I
would like to have this patch in my next PR for v6.6. If no objections
I'll do it directly when I merge the patch in stm32-next.
Cheers
Alex