mb/lenovo/x2?0/devicetree: Fix regression of BDC detection
The x220 and x230 do have BDC detection, but it's broken.
Disable BDC detection on those two boards, and add a comment
why it doesn't work.
The issue has been reported and tested on Lenovo X220.
Change-Id: Id1ccc2c4387370e284ff8964e1c41d945cefe74c
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/21587
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
diff --git a/src/mainboard/lenovo/x230/devicetree.cb b/src/mainboard/lenovo/x230/devicetree.cb
index d7f5647..41e13f6 100644
--- a/src/mainboard/lenovo/x230/devicetree.cb
+++ b/src/mainboard/lenovo/x230/devicetree.cb
@@ -167,9 +167,11 @@
register "eventd_enable" = "0xff"
register "evente_enable" = "0x0d"
- register "has_bdc_detection" = "1"
- register "bdc_gpio_num" = "54"
- register "bdc_gpio_lvl" = "0"
+ # BDC detection is broken on this board:
+ # BDC shorts pin14 and pin1
+ # BDC's connector pin14 is left floating
+ # BDC's connector pin1 is routed to SB GPIO 54
+ register "has_bdc_detection" = "0"
end
end # LPC bridge
device pci 1f.2 on