Is it possible to change the ordering so that is acting like in 3.8? Op vrijdag 1 januari 2016 01:06:59 UTC+1 schreef RobertCNelson: > > On Thu, Dec 31, 2015 at 5:31 PM, Bit Pusher <[email protected] > <javascript:>> wrote: > > Under 3.8.13: > >> uname -r > > 3.8.13-bone77 > >> sudo i2cdetect -l > > i2c-0 i2c OMAP I2C adapter I2C adapter > > i2c-1 i2c OMAP I2C adapter I2C adapter > >> > > Under 4.1.115: > > > uname -r > > 4.1.15-bone17 > >> sudo i2cdetect -l > > i2c-0 i2c OMAP I2C adapter I2C adapter > > i2c-2 i2c OMAP I2C adapter I2C adapter > >> > > > > Has the I2C smbus at address 1 changed to address 2 as indicated by the > > second '2' in i2c-2i2c? I'm assuming this is the second I2C bus at > > pins P9_19 and P9_20? If so, would anyone know why? > > > > Back in 4.1.15 with a cape attached: > >> sudo i2cdetect -y -r 2 > > 0 1 2 3 4 5 6 7 8 9 a b c d e f > > 00: -- -- -- -- -- -- -- -- -- -- -- -- -- > > 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > > 20: 20 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > > 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > > 40: -- -- -- -- -- -- -- -- 48 -- -- -- -- -- -- -- > > 50: -- -- -- -- UU UU UU UU -- -- -- -- -- -- -- -- > > 60: -- -- -- -- -- -- -- -- 68 -- -- -- -- -- -- -- > > 70: 70 -- -- -- -- -- -- -- > > > > and in 3.8.13 with no cape: > >> sudo i2cdetect -y -r 1 > > 0 1 2 3 4 5 6 7 8 9 a b c d e f > > 00: -- -- -- -- -- -- -- -- -- -- -- -- -- > > 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > > 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > > 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > > 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > > 50: -- -- -- -- UU UU UU UU -- -- -- -- -- -- -- -- > > 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > > 70: -- -- -- -- -- -- -- -- > >> > > The similarity is enough to make me think the bus address has changed? > > See commit: > > ARM: dts: AM33xx+: Add i2c aliases > Provide alias to allow ordering the i2c devices correctly. > > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6a96867844895008558810853c7838af39dd317c > > > Consider 4.1.x to be the 'correct' way 3.8 should have been done.. > > Regards, > > -- > Robert Nelson > https://rcn-ee.com/ >
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