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(-) -- 2.26.2
