[PATCH v4 0/3] nvmem: mtk-efuse: mt6572 support

[Roman Vivchar via B4 Relay]

This patch series adds MediaTek mt6572 efuse support. Unlike newer SoCs,
its efuse controller doesn't work properly with 8-bit reads, leading to
invalid data with current mtk-efuse driver implementation.

This behavior can be observed with devmem (0x10009174 and 0x10009178 are
thermal calibration cells):
~ # devmem 0x10009174 32
0x00CDD4CD
~ # devmem 0x10009178 32
0x0F76865D
~ # devmem 0x10009174 8
0xCD
~ # devmem 0x10009175 8
0x00
~ # devmem 0x10009176 8
0x00
~ # devmem 0x10009177 8
0x00
~ # devmem 0x10009178 8
0x5D
~ # devmem 0x10009179 8
0x00
~ # devmem 0x1000917a 8
0x00
~ # devmem 0x1000917b 8
0x00

Patch 1 adds dt-bindings compatible for the mt6572,
Patch 2 adds platform data option to use aligned 32-bit reads instead
of plain readb().
Patch 3 adds platform data for mt6572 SoC.

Signed-off-by: Roman Vivchar <rva333@xxxxxxxxxxxxxx>
---
Changes in v4:
- Pick up Angelo's tags
- Rebase onto nvmem/for-next (2eda8d2a45ca ("Merge branches 'nvmem-fixes' and 'nvmem-for-v7.4' into nvnem-for-next"))
- Link to v3: https://patch.msgid.link/20260909-6572-nvmem-v3-0-c0c441656431@xxxxxxxxxxxxxx

Changes in v3:
- Pick up Rob's r-b tag for dt-bindings
- Patch 2 and 3 unchanged, for some reason cover letter and patch 1 were
missing on the web mirror...
- Link to v2: https://patch.msgid.link/20260724-6572-nvmem-v2-0-e58d16a29621@xxxxxxxxxxxxxx

Changes in v2:
- dt-bindings: make mediatek,mt6572-efuse standalone compatible
- Driver: add 'mtk_reg_read_aligned' helper instead of modifying 'mtk_reg_read'
- Link to v1: https://patch.msgid.link/20260715-6572-nvmem-v1-0-9c13be99d077@xxxxxxxxxxxxxx

---
Roman Vivchar (3):
      dt-bindings: nvmem: mediatek: efuse: add mt6572
      nvmem: mtk-efuse: add support for 32-bit aligned reads
      nvmem: mtk-efuse: add mt6572 support

 .../devicetree/bindings/nvmem/mediatek,efuse.yaml  |  5 ++-
 drivers/nvmem/mtk-efuse.c                          | 41 +++++++++++++++++++++-
 2 files changed, 44 insertions(+), 2 deletions(-)
---
base-commit: 2eda8d2a45caa955a5cb1d897bf6024d22041995
change-id: 20260710-6572-nvmem-eb98c7a73351

Best regards,
--  
Roman Vivchar <rva333@xxxxxxxxxxxxxx>