Re: [PATCH v2 6/7] i2c: ChromeOS EC tunnel driver

2014-04-29 Thread Wolfram Sang
Hi, just a basic review to keep things rolling... > On the original Samsung ARM Chromebook these devices were on an I2C > bus that was shared between the AP and the EC and arbitrated using > some extranal GPIOs (see i2c-arb-gpio-challenge). > > The original arbitration scheme worked well enough

Re: [PATCH v2 6/7] i2c: ChromeOS EC tunnel driver

2014-04-23 Thread Lee Jones
On Tue, 22 Apr 2014, Doug Anderson wrote: > On ARM Chromebooks we have a few devices that are accessed by both the > AP (the main "Application Processor") and the EC (the Embedded > Controller). These are: > * The battery (sbs-battery). > * The power management unit tps65090. > > On the original

[PATCH v2 6/7] i2c: ChromeOS EC tunnel driver

2014-04-22 Thread Doug Anderson
On ARM Chromebooks we have a few devices that are accessed by both the AP (the main "Application Processor") and the EC (the Embedded Controller). These are: * The battery (sbs-battery). * The power management unit tps65090. On the original Samsung ARM Chromebook these devices were on an I2C bus