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authorFurquan Shaikh <furquan@google.com>2020-07-14 12:15:59 -0700
committerAaron Durbin <adurbin@chromium.org>2020-07-16 16:39:09 +0000
commit9961343e67335c1e01ea57b4229c3acff42cf71a (patch)
treeea80e2f66fbe61c447c79488ff84e21595e58e83 /src/soc/nvidia/tegra/apbmisc.c
parenteb912ed9adbef056f01a9278cc98745ea5a6dbf0 (diff)
mb/google/zork: Drop power and reset control in romstage for trembyle
This change drops power and reset control for non PCIe devices in romstage 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) | +---------------------------------------------------------------------------------------+ | 13 |EN_PWR_TOUCHPAD| 499K PD | PU | S5 | Powered on | Powered on | | |_PS2 | | | | (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) | +---------------------------------------------------------------------------------------+ +---------------------------------------------------------------------------------------+ | 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: Ieadc62f1a13857209cf0a62f204efb9278e0e97d Reviewed-on: https://review.coreboot.org/c/coreboot/+/43462 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/soc/nvidia/tegra/apbmisc.c')
0 files changed, 0 insertions, 0 deletions