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mb/lenovo/t400: Improve docking code

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* Remove dead code
* Add support for types 2504 and 2505
* Print dock info at romstage entry
* Improve dock disconnect for type 2505
* Move defines into dock.h for future ACPI code
* Reduce timeouts according to spec to decrease boot time on error
* Fix no docking detection (reduces boot time by 1 second)
* Configure GPIO LDN before reading GPIOs
* Use Kconfig values instead of fixed defines
* Add documentation

Tested on Lenovo T500 with docking 2504 and 2505.

Change-Id: Ic4510ffadc67da95961cecd51a6d8ed856b3ac99
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/29418
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
This commit is contained in:
Patrick Rudolph
2018-10-30 17:38:13 +01:00
committed by Felix Held
parent d2c2f83964
commit c0a1625df1
4 changed files with 94 additions and 41 deletions
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14
Documentation/mainboard/lenovo/t4xx_series.md
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@@ -18,3 +18,17 @@ the whole device.
* Unplug the power cable
* Remove the bottom enclosure
* Flip the mainboard and remove the main frame
## Docking stations
The following docking stations are supported by coreboot:
* Type 2505
* VGA, Ethernet, Modem, PS2, 4 USB Ports
* Dock ID on pc87382 reads as: 2
* Type 2504
* Serial, LPT, LEDs, Audio, DVI, VGA, Ethernet, Modem, PS2, 4 USB Ports
* Dock ID on pc87382 reads as: 1
* PNP IO address of SuperIO pc87384: 0x2e
There's no hotplug support for LPT and Serial on Type 2504.
The Dock ID reads as 7 if no dock is connected.