From 0186912f9ecfc363071affeefa9b9e28966c0245 Mon Sep 17 00:00:00 2001 From: Evgeny Zinoviev Date: Thu, 30 Aug 2018 00:23:39 +0300 Subject: [PATCH] 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 Reviewed-on: https://review.coreboot.org/28392 Reviewed-by: Patrick Rudolph Tested-by: build bot (Jenkins) --- src/mainboard/lenovo/t430/devicetree.cb | 2 +- src/mainboard/lenovo/t530/variants/t530/devicetree.cb | 2 +- src/mainboard/lenovo/t530/variants/w530/devicetree.cb | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/src/mainboard/lenovo/t430/devicetree.cb b/src/mainboard/lenovo/t430/devicetree.cb index d466b368ef..5eb92bc861 100644 --- a/src/mainboard/lenovo/t430/devicetree.cb +++ b/src/mainboard/lenovo/t430/devicetree.cb @@ -167,7 +167,7 @@ chip northbridge/intel/sandybridge register "has_backlight_gpio" = "0" register "has_dgpu_power_gpio" = "0" - register "has_thinker1" = "0" + register "has_thinker1" = "1" end chip drivers/pc80/tpm device pnp 0c31.0 on end 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