N900 Hardware Bus I2c: Difference between revisions
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imported>speedevil New page: =Hardware= /sys/bus/i2c/drivers# ls -d */*-* ad5820/3-000c dummy/1-004a radio-si4713/2-0063 adp1653/2-0030 dummy/1-004b smia-sensor/2-0010 aic3... |
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=Hardware= | =Hardware= | ||
Bus 1. | |||
* 0x48 [[N900 Hardware Chipset|Gaia/chipset]] | |||
dummy/1-004a | |||
dummy/1-0049 | |||
dummy/1-004b | |||
Bus 2. | |||
tsl2563/2-0029 | |||
smia-sensor/2-0010 | |||
aic3x I2C Codec/2-0018 | |||
aic34b_dummy/2-0019 | |||
adp1653/2-0030 | |||
* 0x63 [[N900 Hardware FM Retriever|FM receiver]] | |||
tpa6130a2/2-0060 | |||
lp5523/2-0032 | |||
Bus 3. | |||
ad5820/3-000c | |||
et8ek8/3-003e | |||
lis302dl/3-001d | |||
/sys/bus/i2c/drivers# ls -d */*-* | /sys/bus/i2c/drivers# ls -d */*-* | ||
=Software= | =Software= | ||
Revision as of 15:39, 7 June 2010
Hardware
Bus 1.
- 0x48 Gaia/chipset
dummy/1-004a dummy/1-0049 dummy/1-004b
Bus 2.
tsl2563/2-0029 smia-sensor/2-0010 aic3x I2C Codec/2-0018 aic34b_dummy/2-0019
adp1653/2-0030
- 0x63 FM receiver
tpa6130a2/2-0060 lp5523/2-0032
Bus 3.
ad5820/3-000c
et8ek8/3-003e lis302dl/3-001d
/sys/bus/i2c/drivers# ls -d */*-*
Software
The n900 software driving I2C comes in three flavours.
Firstly, there are a large number of kernel drivers.
Then, there are a small number of devices 'bit banged' through I2C ioctls - BME for example does this.
Finally, there are probably some I2C components in the Rapuyama and assorted cellphone/GPS hardware. These are not visible to the casual developer. (you have to open the n900 and probe stuff, or hack the phone firmware).
