[0/3] nvmem: qfprom: Avoid untouchable regions

Message

Evan Green Sept. 29, 2020, 8:58 p.m. UTC

Certain fuses are protected by the XPU such that the AP cannot
access them. Attempting to do so causes an SError. Introduce an
SoC-specific compatible string, and then use that to determine
which fuse regions to present as Read as Zero / Write Ignore.


Evan Green (3):
  dt-bindings: nvmem: Add qcom,sc7180-qfprom compatible string
  arm64: dts: qcom: sc7180: Add soc-specific qfprom compat string
  nvmem: qfprom: Don't touch certain fuses

 .../bindings/nvmem/qcom,qfprom.yaml           |  4 +-
 arch/arm64/boot/dts/qcom/sc7180.dtsi          |  2 +-
 drivers/nvmem/qfprom.c                        | 55 +++++++++++++++++--
 3 files changed, 55 insertions(+), 6 deletions(-)