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https://github.com/brain-hackers/u-boot-brain
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ae0d33a729
The reset circuitry in the RK3399 only resets 'almost all logic' when a software reset is performed. To make our software maintenance easier in the future, we want to have the option (controlled by a DTS property) to force all reset causes other than a power-on reset to trigger a power-on reset via a GPIO trigger. This adds the necessary support to the rk3399-puma (i.e. RK3399-Q7) board-support and the documentation for the new property (sysreset-gpio) within the /config-node. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com> Reviewed-by: Simon Glass <sjg@chromium.org>
55 lines
2.0 KiB
Plaintext
55 lines
2.0 KiB
Plaintext
The /config node (Configuration Options)
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A number of run-time configuration options are provided in the /config node
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of the control device tree. You can access these using fdtdec_get_config_int(),
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fdtdec_get_config_bool() and fdtdec_get_config_string().
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Available options are:
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silent-console
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If present and non-zero, the console is silenced by default on boot.
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no-keyboard
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Tells U-Boot not to expect an attached keyboard with a VGA console
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u-boot,efi-partition-entries-offset
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If present, this provides an offset (in bytes, from the start of a
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device) that should be skipped over before the partition entries.
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This is used by the EFI/GPT partition implementation when a device
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is formatted.
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This setting will override any values configured via Kconfig.
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u-boot,mmc-env-partition
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if present, the environment shall be placed at the last
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CONFIG_ENV_SIZE blocks of the partition on the
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CONFIG_SYS_MMC_ENV_DEV.
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if u-boot,mmc-env-offset* is present, this setting will take
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precedence. In that case, only if the partition is not found,
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mmc-env-offset* will be tried.
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u-boot,mmc-env-offset
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u-boot,mmc-env-offset-redundant
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If present, the values of the 'u-boot,mmc-env-offset' and/or
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of the u-boot,mmc-env-offset-redundant' properties overrides
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CONFIG_ENV_OFFSET and CONFIG_ENV_OFFSET_REDUND, respectively,
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for SD/MMC devices.
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Values are interpreted as the offset from the start of the
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device, specified in bytes. It is assumed that the setting
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will point at the beginning of a LBA and values that are not
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LBA-aligned will be rounded up to the next LBA address.
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u-boot,spl-payload-offset
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If present (and SPL is controlled by the device-tree), this allows
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to override the CONFIG_SYS_SPI_U_BOOT_OFFS setting using a value
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from the device-tree.
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sysreset-gpio
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If present (and supported by the specific board), indicates a
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GPIO that can be set to trigger a system reset. It is assumed
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that such a system reset will effect a complete platform reset,
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being roughly equivalent to a power-on reset.
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