From: Lukas Funke <lukas.fu...@weidmueller.com>
This series adds a driver to read and write ZynqMP eFuses [1]. The driver can be accessed by the 'fuse read' and 'fuse write' commands Example: => fuse read 0 0xc 3 Reading bank 0: Word 0x0000000c: 3cb16685 013af244 40000000 Note: Accessing eFuses requires eFuse access to be enabled in the underlying PMU firmware. Use cases are: - Reading/writing user specific eFuses to enable device specific implementations - Revoking SPK IDs - Reading SoC version/DNA [1] https://docs.amd.com/r/en-US/ug1085-zynq-ultrascale-trm/eFUSE Changes in v2: - Drop vendor specific fuse cmd, use existing fuse cmd - Minor code refactoring (reverse x-mas tree) Lukas Funke (2): firmware: zynqmp: Add support to access efuses drivers: misc: Add driver to access ZynqMP efuses drivers/firmware/firmware-zynqmp.c | 31 +++ drivers/misc/Kconfig | 8 + drivers/misc/Makefile | 1 + drivers/misc/zynqmp_efuse.c | 324 +++++++++++++++++++++++++++++ include/zynqmp_firmware.h | 2 + 5 files changed, 366 insertions(+) create mode 100644 drivers/misc/zynqmp_efuse.c -- 2.30.2
