Documentation: add description for util/pmh7tool

Change-Id: Iab5daf101a9ff27aa49b7849bf6bf39362b8db09
Signed-off-by: Evgeny Zinoviev <me@ch1p.com>
Reviewed-on: https://review.coreboot.org/28368
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tom Hiller <thrilleratplay@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

Documentation/util.md

@@ -77,6 +77,9 @@ partial deblobbing of Intel ME/TXE firmware images `Python`
 * __nvidia__ - nvidia blob parsers
 * __nvramtool__ - Reads and writes coreboot parameters and displaying
 information from the coreboot table in CMOS/NVRAM. `C`
+* __pmh7tool__ - Dumps, reads and writes PMH7 registers on Lenovo
+ThinkPads. PMH7 is used for switching on and off the power of some
+devices on the board such as dGPU. `C`
 * __post__ - Userspace utility that can be used to test POST cards. `C`
 * __qualcomm__ - CMM script to debug Qualcomm coreboot environments.
 `CMM`

util/README.md

@@ -75,6 +75,9 @@ partial deblobbing of Intel ME/TXE firmware images `Python`
 * __nvidia__ - nvidia blob parsers
 * __nvramtool__ - Reads and writes coreboot parameters and displaying
 information from the coreboot table in CMOS/NVRAM. `C`
+* __pmh7tool__ - Dumps, reads and writes PMH7 registers on Lenovo
+ThinkPads. PMH7 is used for switching on and off the power of some
+devices on the board such as dGPU. `C`
 * __post__ - Userspace utility that can be used to test POST cards. `C`
 * __qualcomm__ - CMM script to debug Qualcomm coreboot environments.
 `CMM`

util/pmh7tool/description.md

@@ -0,0 +1 @@
+Dumps, reads and writes PMH7 registers on Lenovo ThinkPads. PMH7 is used for switching on and off the power of some devices on the board such as dGPU. `C`