Please somebody tell me the correct way use the I2C bus for checking the keypad in uboot.
- I'll assume you used the u-boot snapshot from the TI download site for 2430.
- I've used the i2c commands in the past with out issues for 24xx/343x targets. I've not tried this is a while on 24xx but it worked last time I tried.
- T2 shows up as 4 separate i2c chips. Below is an example accessing into it. You should be able to go look at the revision register and others.
- Below is an example writing to the power section to select a high voltage level. The example was part of some over clocking tests which required a higher voltage.
OMAP34XX SDP # imm 4b b9 000000b9: 30 ? 000000ba: 00 ? 000000bb: 00 ? 43 000000bc: 00 ? 43 000000bd: 00 ? . OMAP34XX SDP # imm 4b b9 000000b9: 30 ? 000000ba: 00 ? 3 000000bb: 43 ? .
Regards, Richard W.