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google/eve: Set touchscreen I2C bus speed to 1MHz 

Enable Fast-Plus speed for the touchscreen device so it can
be used at 1MHz instead of 400KHz.

BUG=chrome-os-partner:61277
TEST=manual testing on Eve P1, needs backported kernel patches
to actually make use of any I2C speed other than 400KHz

Change-Id: I3f44ff4a02a02a7b05e69ad54d4c6d60e5878393
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/18397
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Duncan Laurie 2017-02-17 17:27:51 -08:00
parent 5492bfb55c
commit 658a6dc78d
1 changed files with 1 additions and 0 deletions
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1
src/mainboard/google/eve/devicetree.cb
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@ -210,6 +210,7 @@ chip soc/intel/skylake
register "generic.cid" = "PNP0C50_CID"
register "generic.desc" = "WCOM_DT_DESC"
register "generic.irq" = "IRQ_LEVEL_LOW(GPP_E7_IRQ)"
register "generic.speed" = "I2C_SPEED_FAST_PLUS"
register "hid_desc_reg_offset" = "0x1"
device i2c 0a on end
end