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This initial version supports CPU, dma, interrupts, timers, UART and
SDHCI (everything necessary to boot Linux on this system on chip) as
well as Ethernet, I2C, PWM and SPI.

The DT is split into rk3588 and rk3588s, which is a reduced version
(i.e. with less peripherals) of the former.
Co-Developed-by: Yifeng Zhao <yifeng.zhao@rock-chips.com>
Signed-off-by: Yifeng Zhao <yifeng.zhao@rock-chips.com>
Co-Developed-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Co-Developed-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
[rebase, squash and reword commit message]
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Acked-by: Jagan Teki <jagan@edgeble.ai>
Tested-by: Jagan Teki <jagan@edgeble.ai> # edgeble-neu6a
Link: https://lore.kernel.org/r/20230109155801.51642-4-sebastian.reichel@collabora.com

Signed-off-by: Heiko Stuebner <heiko@sntech.de>