As the RK3399-Q7 (Puma) differs from our previous modules in how we can force an external boot (on the RK3399-Q7 this holds the eMMC and SPI in reset, until an external signal is removed) through the 'BIOS disable'-signal of the Qseven specification, we can't derive the unique board id reliably from the eMMC's unique id.
Instead, for the RK3399-Q7, we rely on the efuse block of the RK3399 and use the (assumed to be unique) cpu_id region.
This patch-series adds the required infrastructure and switches the RK3399-Q7 (puma_rk3399) over to this new infrastructure: - adds a rockchip-efuse driver as a misc-device (and permits requests for the clock gate listed in the DTS for the efuse node) - ports the CRC32-based 'serial#' derivation over from Linux - exposes the complete cpu_id field through 'cpuid#'
Changes in v2: - added derivation of ethaddr from cpuid
Klaus Goger (1): rockchip: board: puma_rk3399: derive ethaddr from cpuid
Philipp Tomsich (4): rockchip: clk: rk3399: allow requests for PCLK_EFUSE1024NS rockchip: efuse: add (misc) driver for RK3399 non-secure efuse block rockchip: board: puma_rk3399: add support for serial# and cpuid# via efuses rockchip: defconfig: puma-rk3399: enable RK3399 efuse driver
board/theobroma-systems/puma_rk3399/puma-rk3399.c | 117 ++++++++++++++++ configs/puma-rk3399_defconfig | 2 + drivers/clk/rockchip/clk_rk3399.c | 4 + drivers/misc/Kconfig | 14 ++ drivers/misc/Makefile | 1 + drivers/misc/rockchip-efuse.c | 163 ++++++++++++++++++++++ include/configs/puma_rk3399.h | 4 + 7 files changed, 305 insertions(+) create mode 100644 drivers/misc/rockchip-efuse.c