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The ARM System Control and Management Interface (SCMI) is a standard way
to offload handling of system resources like clocks, resets and power
domain handling to the firmware. This should replace Silicon Provider
specific conduits for new SoCs. Systems where this is already relevant:
- STM32MP1: For trusted boot, the clock and reset controller are
managed from secure world. This is not yet supported by barebox and
must be disabled in TF-A
- RK3568: At least the CPU clock is only controllable via SCMI
- i.MX8X: Communication with the SCU occurs via SCMI
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20220220124736.3052502-13-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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