Add support for fastboot reboot reason detection#5
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aswinm94 wants to merge 1 commit intoqualcomm-linux:qcom-nextfrom
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Add support for fastboot reboot reason detection#5aswinm94 wants to merge 1 commit intoqualcomm-linux:qcom-nextfrom
aswinm94 wants to merge 1 commit intoqualcomm-linux:qcom-nextfrom
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As per upstream comments, there seems to be a lot of rework needed on the implementation approach. Can we address that feedback and then add v2 to the staging tree? |
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Add functionality to detect and handle reboot-to-bootloader requests by reading PMIC PON (Power On) registers. When the device is rebooted with the bootloader flag set, U-Boot will automatically enter fastboot mode. This implementation supports multiple PMIC generations: - Gen 4 PMICs: Uses PON_SOFT_RB_SPARE register (0x88F) - Newer PMICs: Uses SDAM-based PON_REBOOT_REASON register (0x7148) The PMIC model is automatically detected via revision ID registers to determine the correct register addresses. After detecting a fastboot reboot reason, the register is cleared and fastboot mode is entered via the "run fastboot" command. Signed-off-by: Aswin Murugan <aswin.murugan@oss.qualcomm.com>
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Add functionality to detect and handle reboot-to-bootloader requests
by reading PMIC PON (Power On) registers. When the device is rebooted
with the bootloader flag set, U-Boot will automatically enter fastboot
mode.
This implementation supports multiple PMIC generations:
The PMIC model is automatically detected via revision ID registers to
determine the correct register addresses. After detecting a fastboot
reboot reason, the register is cleared and fastboot mode is entered
via the "run fastboot" command.
commits for this PR
mach-snapdragon:: Add support for fastboot reboot reason detection
upstream link: https://lore.kernel.org/all/20260108065533.1143179-1-aswin.murugan@oss.qualcomm.com/