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mb/google/rex/var/screebo: Add delay 1ms after Main 3V3

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when S0ix returns S0, PERST needs to delay until
Main 3V3 is stable and then pull up

BUG=b:313976507
TEST=emerge-rex coreboot,measurement waveform verify pass

Change-Id: I33a86e52fab3c5c8cba6ebed0cbdd1b88b6538b0
Signed-off-by: Kun Liu <liukun11@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79320
Reviewed-by: Rui Zhou <zhourui@huaqin.corp-partner.google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Kun Liu
2023-11-30 18:05:03 +08:00
committed by Felix Held
parent b8fd150da6
commit f733703a61
1 changed files with 1 additions and 0 deletions
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src/mainboard/google/rex/variants/screebo/overridetree.cb
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@@ -289,6 +289,7 @@ chip soc/intel/meteorlake
chip soc/intel/common/block/pcie/rtd3
register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_D03)"
register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_D02)"
register "enable_delay_ms" = "1"
register "srcclk_pin" = "6"
device generic 0 on
probe DB_SD SD_GL9750