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 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 | 52 ++-
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, 566 insertions(+), 5 deletions(-)
---
base-commit: cc2b5f627e8ccbae1188ef2d8be3e451d7f933a5
change-id: 20260712-mt6858-pmdomain-b1b456c96675
Best regards,
--
Nikolai Burov <nikolai.burov@jolla.com>