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galileorevh.md: add i2c frequency info

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Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
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Brendan Le Foll
2014-11-07 15:05:23 +00:00
parent bb3228ad58
commit fdb11d98ea
1 changed files with 5 additions and 2 deletions
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docs/galileorevh.md
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@@ -6,8 +6,11 @@ Application Processor, a 32-bit Intel Pentium-class system on a chip.
The Gen 2 board has the following limitations in libmraa:
- i2c is set at 400Khz speed cannot be changed without reloading kernel module
- i2c bus is shared with multiple devices, scanning it usually fails
- i2c is set at 400Khz speed cannot be changed without reloading kernel module,
the driver is intel_qrk_gip_i2c and the parameter is i2c_std_mode which must
be set to 1 in order to set the i2c bus speed to 100Khz
- i2c bus is shared with multiple devices in kernel space, scanning it usually
fails
- pwm period is set globally for all pwm channels, when changed this will halt
all pwm channels
- adc kernel module will return 12bit number but the ADC itself only has an