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#'
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 | 79 +++++++++++
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, 267 insertions(+)
create mode 100644 drivers/misc/rockchip-efuse.c
--
1.9.1
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