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08928c1f76
As the new form-factor has the lid accelerometer on the reversed side facing the B-cover, the matrix setting depending on board version; in such matter, it should be able to compatible with old version of boards. We create a new hook function for board specific tweaks, this is because since the commit of0c57824("reef: Re-factor PP5000 and PP3300 enable/disable"), the board_init() is no longer a good place for tweaks, because ADC read should come after adc_init(); such that, new hook ensures robust ADC reading which is the source of board version. Also, we fix an arithmetic error for version-3 workaround, i.e. patch the commit ofca99f38("snappy: BMI160 is powered down on board v3 and older in S3"), else it could trigger unexpected EC panic like this: [89.770776 chipset -> S3] [89.771222 power state 2 = S3, in 0x006d] [89.772428 I2C unwedge failed, SCL is being held low] [89.773775 TCPC p0 Low Power Mode] [89.812962 Reset i2c 01 fail!] ...snip... [91.816415 Unexpected i2c state machine! 1] Time: 0x00000000057a7d9c us, 91.913628 s Deadline: 0x00000000057a8a1d -> 0.003201 s from now ...snip... Rebooting... --- UART initialized after reboot --- [Reset cause: soft] ...snip... BUG=chrome-os-partner:62676 BRANCH=reef TEST=check the DVT1 and DVT2 unit rotate normally. Change-Id: Ic53e67e0c97e57056587adb6b260e81c0f99437a Signed-off-by: Bruce.Wan <Bruce.Wan@quantatw.com> Reviewed-on: https://chromium-review.googlesource.com/442252 Commit-Ready: Chen Wisley <wisley.chen@quantatw.com> Tested-by: Bruce Wan <Bruce.Wan@quantatw.com> Tested-by: Harry Pan <harry.pan@intel.com> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly