The lowest speed grade of Toradex AM62 SoMs is K speed, resulting in a
max value of 800MHz for the CPU operating frequency. A solution with
runtime selection of the CPU frequency is already planned to avoid these
kinds of problems in the future.
Fixes: 8fb8a6d49977 ("arm: dts: k3-am625-verdin-r5:Change CPU frequency to 1000MHz")
Signed-off-by: Joao Paulo Goncalves <joao.goncalves@toradex.com>
The same U-Boot binary is compatible with multiple Verdin AM62 board
variants. However, some of the SoC models can only operate at a maximum
speed of 1 GHz.
Previously, the boards with lower-speed grades were running at
overclocked speeds, leading to kernel complaints about unsupported
configurations.
To resolve this issue, the operating speed has been decreased to the
maximum allowable value across all Verdin AM62 board variants. As a
result, there is a regression in overall boot time, increasing by around
200 milliseconds for the faster SoC variant.
Signed-off-by: Vitor Soares <vitor.soares@toradex.com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
k3-am62* SoC dtsi files now provide the following:
bootph-all: dmss secure_proxy_main dmsc k3_pds k3_clks k3_reset
main_pmx0 main_timer0 mcu_pmx0 wkup_conf chipid
bootph-pre-ram: secure_proxy_sa3 main_esm mcu_esm
Drop these from board r5 and u-boot.dtsi files as these are duplicate in
them now.
Acked-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Tested-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
This adds initial support for the Toradex Verdin AM62 Quad 1GB WB IT
V1.0A module and subsequent V1.1 launch configuration SKUs. They are
strapped to boot from their on-module eMMC. U-Boot supports booting
from the on-module eMMC only, DFU support is disabled for now due to
missing AM62x USB support.
The device trees were taken straight from Linux v6.5-rc1.
Boot sequence is:
SYSFW ---> R5 SPL (both in tiboot3.bin) ---> ATF (TF-A) ---> OP-TEE
---> A53 SPL (part of tispl.bin) ---> U-boot proper (u-boot.img)
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Nishanth Menon <nm@ti.com>
