diff options
| -rw-r--r-- | Documentation/getting_started/gpio.md | 79 |
1 files changed, 26 insertions, 53 deletions
diff --git a/Documentation/getting_started/gpio.md b/Documentation/getting_started/gpio.md index 829c41a0fc1e..5f30ea7c38df 100644 --- a/Documentation/getting_started/gpio.md +++ b/Documentation/getting_started/gpio.md @@ -167,59 +167,32 @@ could cause catastrophic failures, up to and including your mainboard! As per Intel Platform Controller Hub (PCH) EDS since Skylake, a GPIO PAD register supports four different types of GPIO reset as: -+------------------------+----------------+-------------+-------------+ -| | | PAD Reset ? | -+ PAD Reset Config + Platform Reset +-------------+-------------+ -| | | GPP | GPD | -+------------------------+----------------+-------------+-------------+ -| 00 - Power Good | Warm Reset | N | N | -| (GPP: RSMRST, +----------------+-------------+-------------+ -| GPD: DSW_PWROK) | Cold Reset | N | N | -| +----------------+-------------+-------------+ -| | S3/S4/S5 | N | N | -| +----------------+-------------+-------------+ -| | Global Reset | N | N | -| +----------------+-------------+-------------+ -| | Deep Sx | Y | N | -| +----------------+-------------+-------------+ -| | G3 | Y | Y | -+------------------------+----------------+-------------+-------------+ -| 01 - Deep | Warm Reset | Y | Y | -| +----------------+-------------+-------------+ -| | Cold Reset | Y | Y | -| +----------------+-------------+-------------+ -| | S3/S4/S5 | N | N | -| +----------------+-------------+-------------+ -| | Global Reset | Y | Y | -| +----------------+-------------+-------------+ -| | Deep Sx | Y | Y | -| +----------------+-------------+-------------+ -| | G3 | Y | Y | -+------------------------+----------------+-------------+-------------+ -| 10 - Host Reset/PLTRST | Warm Reset | Y | Y | -| +----------------+-------------+-------------+ -| | Cold Reset | Y | Y | -| +----------------+-------------+-------------+ -| | S3/S4/S5 | Y | Y | -| +----------------+-------------+-------------+ -| | Global Reset | Y | Y | -| +----------------+-------------+-------------+ -| | Deep Sx | Y | Y | -| +----------------+-------------+-------------+ -| | G3 | Y | Y | -+------------------------+----------------+-------------+-------------+ -| 11 - Resume Reset | Warm Reset | - | N | -| (GPP: Reserved, +----------------+-------------+-------------+ -| GPD: RSMRST) | Cold Reset | - | N | -| +----------------+-------------+-------------+ -| | S3/S4/S5 | - | N | -| +----------------+-------------+-------------+ -| | Global Reset | - | N | -| +----------------+-------------+-------------+ -| | Deep Sx | - | Y | -| +----------------+-------------+-------------+ -| | G3 | - | Y | -+------------------------+----------------+-------------+-------------+ +| PAD Reset Config | Platform Reset | GPP | GPD | +|-------------------------------------------------|----------------|-----|-----| +| 00 - Power Good (GPP: RSMRST, GPD: DSW_PWROK) | Warm Reset | N | N | +| | Cold Reset | N | N | +| | S3/S4/S5 | N | N | +| | Global Reset | N | N | +| | Deep Sx | Y | N | +| | G3 | Y | N | +| 01 - Deep | Warm Reset | Y | Y | +| | Cold Reset | Y | Y | +| | S3/S4/S5 | N | N | +| | Global Reset | Y | Y | +| | Deep Sx | Y | Y | +| | G3 | Y | Y | +| 10 - Host Reset/PLTRST | Warm Reset | Y | Y | +| | Cold Reset | Y | Y | +| | S3/S4/S5 | Y | Y | +| | Global Reset | Y | Y | +| | Deep Sx | Y | Y | +| | G3 | Y | Y | +| 11 - Resume Reset (GPP: Reserved, GPD: RSMRST) | Warm Reset | - | N | +| | Cold Reset | - | N | +| | S3/S4/S5 | - | N | +| | Global Reset | - | N | +| | Deep Sx | - | Y | +| | G3 | - | Y | Each GPIO Community has a Pad Configuration Lock register for a GPP allowing locking specific register fields in the PAD configuration register. |