[PATCH v2 0/2] nvmem: rockchip-efuse: add write support with VQPS gating

Hrushiraj Gandhi hrushirajg23 at gmail.com
Wed Jul 29 01:58:54 PDT 2026


Add RK3399 eFuse write (OTP programming) support, gated on the presence
of an optional VQPS programming supply in the device tree.

Changes in v2:
  - Replaced the rockchip,efuse-write-enable boolean property (v1) with
    a proper optional vqps-supply regulator, as suggested by Heiko
    Stuebner. The supply presence acts as the hardware-level gate for
    write support; the driver owns regulator sequencing entirely inside
    the write callback (enable before A_PGM strobe loop, disable after).
  - Removed stale debug dev_info() left from development.
  - Fixed checkpatch: removed blank line after while open-brace in
    rockchip_rk3399_efuse_read().

Link: https://lore.kernel.org/all/20260715110107.409204-1-hrushirajg23@gmail.com/

Hrushiraj Gandhi (2):
  dt-bindings: nvmem: rockchip-efuse: add optional vqps supply
  nvmem: rockchip-efuse: add write support with optional VQPS supply
    gating

 .../bindings/nvmem/rockchip-efuse.yaml        |   5 +
 drivers/nvmem/rockchip-efuse.c                | 178 +++++++++++++++---
 2 files changed, 158 insertions(+), 25 deletions(-)

-- 
2.47.3




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