Implement reset in U-Boot without PSCI - #118
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Configure the PMIC PON PBS reset type before deasserting MPM PS_HOLD. The PON PBS reset sequence requires PS_HOLD_RESET_CTL2 to be cleared, the requested reset type to be written to PS_HOLD_SW_CTL, and PS_HOLD_RESET_CTL2 to be enabled again before deasserting MPM_PS_HOLD. Signed-off-by: Sumit Singh Dhami <sumit.dhami@oss.qualcomm.com>
Add the Qualcomm PS_HOLD sysreset node for the Lemans EVK. Link the reset driver to the PMIC PON peripheral and provide the PBS PS_HOLD control register offsets required to configure warm and hard resets before deasserting MPM_PS_HOLD. Signed-off-by: Sumit Singh Dhami <sumit.dhami@oss.qualcomm.com>
CMD_POWEROFF requires do_poweroff(), normally provided by psci.c, but PSCI_RESET is disabled in snagboot mode, causing a link failure. Poweroff isn't needed for snagboot recovery, so disable it. Signed-off-by: Sumit Singh Dhami <sumit.dhami@oss.qualcomm.com>
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Implements system reset without relying on PSCI by using the
qcom-pshold sysreset driver. Configures the PMIC PON PBS
reset type before deasserting MPM_PS_HOLD, adds the corresponding
device-tree properties for the Lemans EVK, and disables
CONFIG_CMD_POWEROFF in the snagboot config.