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authorFurquan Shaikh <furquan@google.com>2020-07-14 12:42:08 -0700
committerAaron Durbin <adurbin@chromium.org>2020-07-16 16:39:16 +0000
commitddfec569d1c98afd5e038be7614bc0d0a926d2e0 (patch)
treeaf459726ff0ac435b5144de632fb34d0eb931d97 /LICENSES
parent9961343e67335c1e01ea57b4229c3acff42cf71a (diff)
mb/google/zork: Drop power and reset control in romstage for dalboz
This change drops power and reset control for non PCIe devices in romstage for dalboz reference as this is not required. +---------------------------------------------------------------------------------------+ | GPIO| Net name | External| Internal| Domain| State at reset | State on S3 resume | | # | | Pull | Pull | | | | +---------------------------------------------------------------------------------------+ | 5 | PEN_POWER_EN | 100K PD | PD | S5 | Powered off | Powered on | | | | | | | (because of | (since power is not| | | | | | | internal PD) | disabled when | | | | | | | | entering S3) | +---------------------------------------------------------------------------------------+ | 6 |EN_PWR_TOUCHPAD| 499K PD | PU | S5 | Powered on | Powered on | | | | | | | (because of | (since trackpad | | | | | | | internal PU) | is wake source) | +---------------------------------------------------------------------------------------+ | 68 | EMMC_RESET_L | 100K PU | PD | S0 | Asserted | Asserted | | | | | | | (because of | (because of | | | | | | | internal PD) | internal PD) | +---------------------------------------------------------------------------------------+ | 76 | EN_PWR_CAMERA | 499K PD | PD | S0 | Powered off | Powered off | | | | | | | (because of | (because of | | | | | | | internal PD) | internal PD) | +---------------------------------------------------------------------------------------+ | 140 | USI_RESET | 10K PD | PD | S0 | Deasserted | Deasserted | | | | | | | (because of | (because of | | | | | | | internal PD) | internal PD) | +---------------------------------------------------------------------------------------+ | 141 | USB_HUB_RST_L | 10K PU | PD | S0 | Asserted | Asserted | | | | | | | (because of | (because of | | | | | | | internal PD) | internal PD) | +---------------------------------------------------------------------------------------+ +---------------------------------------------------------------------------------------+ | 67 |EN_PWR_TOUCHPAD| 10K PU | PD | S0 | Powered off | Powered off | | |_PS2 (pre-V3) | | | | (because of | (because of | | | | | | | internal PD) | internal PD) | +---------------------------------------------------------------------------------------+ GPIO_140 starts deasserted out of reset and S3 resume, but gets asserted in ramstage since it is eventually deasserted by OS using ACPI methods. BUG=b:154351731 Signed-off-by: Furquan Shaikh <furquan@google.com> Change-Id: Ie792a5a9d6420763ff10d1e475c094b6ee514888 Reviewed-on: https://review.coreboot.org/c/coreboot/+/43463 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'LICENSES')
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