---
name: "pmh7tool"
section: "8"
platform: "linux"
package: "coreboot-utils"
version: "24.12+dfsg-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/pmh7tool"
---

# pmh7tool(8)

read and write to pmh7 registers

## NAME

pmh7tool - read and write to pmh7 registers

## SYNOPSIS

```
pmh7tool [-d]
pmh7tool [-r] <addr>
pmh7tool [-w] <addr> <data>
pmh7tool [-b | -c | -s] <addr> <bit>
pmh7tool [-h]
```

## DESCRIPTION

Read and write to pmh7 registers at base address 0x15e0

### Attention!

Writing to PMH7 registers is very dangerous, as you directly manipulate the power rails, enable lines, interrupt lines or something else of the device. Proceed with caution.

## OPTIONS

- **-h**, **--help**:

  Print this help

- **-d**, **--dump**:

  Print registers

- **-r**, **--read** \<addr\>:

  Read from register at \<addr\>.

- **-b**, **--read-bit** \<addr\> \<bit\>

  Read bit from register at \<addr\>

- **-w**, **--write** \<addr\> \<data\>

  Write \<data\> to register at \<addr\>

- **-c**, **--clear-bit** \<addr\> \<bit\>

  Clear bit from register at \<addr\>

- **-s**, **--set-bit** \<addr\> \<bit\>

  Set bit at on register at \<addr\>

## NOTES

```
<addr> must be in the range of 0-0x1ff
<data> must be in the range of 0-0xff
<bit>  must be in the range of 0-7
```

## AUTHORS

```
coresystems GmbH.
Man page written by Ahmad Khalifa.
```