[v1] nvmem: mtk-efuse: mt6572 support

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

Roman Vivchar via B4 Relay posted 3 patches 1 week, 3 days ago

Diff against v2
Download series mbox

There is a newer version of this series

.../devicetree/bindings/nvmem/mediatek,efuse.yaml  |  1 +
drivers/nvmem/mtk-efuse.c                          | 37 ++++++++++++++++++++--
2 files changed, 35 insertions(+), 3 deletions(-)

Expand all Fold all

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

Posted by Roman Vivchar via B4 Relay 1 week, 3 days ago

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@protonmail.com>
---
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  |  1 +
 drivers/nvmem/mtk-efuse.c                          | 37 ++++++++++++++++++++--
 2 files changed, 35 insertions(+), 3 deletions(-)
---
base-commit: 8cd9520d35a6c38db6567e97dd93b1f11f185dc6
change-id: 20260710-6572-nvmem-eb98c7a73351

Best regards,
--  
Roman Vivchar <rva333@protonmail.com>