diff options
| author | Evgeny Zinoviev <me@ch1p.com> | 2018-08-30 00:23:39 +0300 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-09-02 03:10:39 +0000 |
| commit | 0186912f9ecfc363071affeefa9b9e28966c0245 (patch) | |
| tree | f6f241b741e168c80a13b40c3d47d3c7a02302de /src/mainboard/lenovo/t530/variants | |
| parent | b7c0b8c8ee13bf4ae0736ddc1abc4f5a86d2a3ba (diff) | |
mb/lenovo: dGPU power handling on T430, T530
Enable dGPU power handling on Lenovo ThinkPad T430, T530 via PMH7
register 0x50.
Although there's no Thinker-1 chip on these models according to
schematics, dGPU power control via PMH7 works the same as on T420/T520,
so they can be considered Thinker-1-compatible.
It can be tested from linux userspace using util/pmh7tool.
To turn dGPU power off:
pmh7tool -c 0x50 7
pmh7tool -c 0x50 3
To turn it on:
pmh7tool -s 0x50 3
pmh7tool -s 0x50 7
To check whether it is on (bash):
reg=0x$(pmh7tool -r 0x50)
echo "$(( (( reg & 0x08 )) >> 3 ))"
or just `pmh7tool -b 0x50 3` with
https://review.coreboot.org/#/c/coreboot/+/28388/
Tested on ThinkPad W530.
Change-Id: Ieab1a33b3c680c757cc0999660b5cb7e122474cc
Signed-off-by: Evgeny Zinoviev <me@ch1p.com>
Reviewed-on: https://review.coreboot.org/28392
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/lenovo/t530/variants')
| -rw-r--r-- | src/mainboard/lenovo/t530/variants/t530/devicetree.cb | 2 | ||||
| -rw-r--r-- | src/mainboard/lenovo/t530/variants/w530/devicetree.cb | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/src/mainboard/lenovo/t530/variants/t530/devicetree.cb b/src/mainboard/lenovo/t530/variants/t530/devicetree.cb index 0da05e00f3..4dcdc9d9d5 100644 --- a/src/mainboard/lenovo/t530/variants/t530/devicetree.cb +++ b/src/mainboard/lenovo/t530/variants/t530/devicetree.cb @@ -157,7 +157,7 @@ chip northbridge/intel/sandybridge register "has_backlight_gpio" = "0" register "has_dgpu_power_gpio" = "0" - register "has_thinker1" = "0" + register "has_thinker1" = "1" end end # LPC bridge device pci 1f.2 on end # SATA Controller 1 diff --git a/src/mainboard/lenovo/t530/variants/w530/devicetree.cb b/src/mainboard/lenovo/t530/variants/w530/devicetree.cb index d9d9df5e14..7a72b26213 100644 --- a/src/mainboard/lenovo/t530/variants/w530/devicetree.cb +++ b/src/mainboard/lenovo/t530/variants/w530/devicetree.cb @@ -179,7 +179,7 @@ chip northbridge/intel/sandybridge register "has_backlight_gpio" = "0" register "has_dgpu_power_gpio" = "0" - register "has_thinker1" = "0" + register "has_thinker1" = "1" end end device pci 1f.2 on # SATA Controller 1 |