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

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]>