Re: [PATCH v3 0/3] pmdomain: mediatek: Add MT6858 support

On Mon, Jul 20, 2026 at 10:46 PM Nikolai Burov via B4 Relay
<[email protected]> wrote:
>
> Add power domain driver support for the MediaTek Dimensity 7100 (MT6858)
> SoC. On this SoC, there are some new subsystem-specific bus protection
> blocks, which are listed here in ascending address order:
>
> - IMG_SUB0 at 0x1502f000
> - CAM_SUB1 at 0x1a00c000
> - CAM_SUB0 at 0x1a00d000
> - IPE_SUB0 at 0x1b00e000
>
> The VLPCFG bus configuration registers at 0x1c00c000 are also new.
>
> Additionally, implement the SMC-based power sequence required for
> enabling the modem power domain on this SoC.
>
> Signed-off-by: Nikolai Burov <[email protected]>
> ---
> Changes in v3:
> - Fix error path to also skip sram_pdn for MODEM_SECURE_PWRSEQ
>   (discovered in Sashiko report)
> - Link to v2: https://patch.msgid.link/[email protected]
>
> Changes in v2:
> - Rebase
> - MTK_SCPD_MODEM_SECURE -> MTK_SCPD_MODEM_SECURE_PWRSEQ
> - Convert SMC command enum to defines
> - Based on the new SIMPLE_PWRSEQ changes, skip the sram_pdn stage for
>   MODEM_SECURE_PWRSEQ too since it wasn't intended to have an effect
> - Clarify that the SMC call also handles bus protection
> - Simply if/else code based on the assumption *_PWRSEQ are mutually
>   exclusive
> - Add comment explaining that PWR_STA_2ND is skipped for modem
>   (mentioned in Sashiko report)
> - Link to v1: https://patch.msgid.link/[email protected]
>
> To: Rob Herring <[email protected]>
> To: Krzysztof Kozlowski <[email protected]>
> To: Conor Dooley <[email protected]>
> To: Matthias Brugger <[email protected]>
> To: AngeloGioacchino Del Regno <[email protected]>
> To: Ulf Hansson <[email protected]>
> Cc: Matthias Brugger <[email protected]>
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
>
> ---
> Nikolai Burov (3):
>       dt-bindings: power: Add MediaTek MT6858 power domain controller
>       pmdomain: mediatek: Add support for secure modem power domain control
>       pmdomain: mediatek: Add support for MT6858 SoC
>
>  .../bindings/power/mediatek,power-controller.yaml  |  21 +-
>  drivers/pmdomain/mediatek/mt6858-pm-domains.h      | 466 +++++++++++++++++++++
>  drivers/pmdomain/mediatek/mtk-pm-domains.c         |  55 ++-
>  drivers/pmdomain/mediatek/mtk-pm-domains.h         |   6 +
>  include/dt-bindings/power/mediatek,mt6858-power.h  |  23 +
>  include/linux/soc/mediatek/mtk_sip_svc.h           |   3 +
>  6 files changed, 568 insertions(+), 6 deletions(-)
> ---
> base-commit: 3fe08b9796f36ef437ab9328e7dd1e5ff2d66603
> change-id: 20260712-mt6858-pmdomain-b1b456c96675
>
> Best regards,
> --
> Nikolai Burov <[email protected]>
>
>

The v3 series applied for next, thanks!

Kind regards
Uffe