On Mon, Jul 20, 2026 at 10:46 PM Nikolai Burov via B4 Relay
<devnull+nikolai.burov.jolla.com@kernel.org> 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 <nikolai.burov@jolla.com>
> ---
> 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/20260715-mt6858-pmdomain-v2-0-6293e87fc093@jolla.com
>
> 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/20260714-mt6858-pmdomain-v1-0-4f09bbb822e0@jolla.com
>
> To: Rob Herring <robh@kernel.org>
> To: Krzysztof Kozlowski <krzk+dt@kernel.org>
> To: Conor Dooley <conor+dt@kernel.org>
> To: Matthias Brugger <matthias.bgg@gmail.com>
> To: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> To: Ulf Hansson <ulfh@kernel.org>
> Cc: Matthias Brugger <mbrugger@suse.com>
> Cc: devicetree@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-mediatek@lists.infradead.org
> Cc: linux-pm@vger.kernel.org
>
> ---
> 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 <nikolai.burov@jolla.com>
>
>
The v3 series applied for next, thanks!
Kind regards
Uffe