Hi, (adding the i2c list) On Wed, Nov 28, 2012 at 05:44:49PM +0100, Sander van Ginkel wrote: > tested with: > CONFIG_I2C_MXS=m > CONFIG_I2C_MXS=y > > in combination with CONFIG_GPIO_MXS enabled and disabled > > used kernels: 3.6 and 3.7.0-rc6 > > My I2C slave is a PCF8575 i/o expander with some LEDs at the output. > These are controlled through sysfs. Thanks, this is useful info. > Just tested with "i2cdetc -y -r 0" that crashes with "BUG: soft > lockup - CPU#0 stuck for 22s!" > according to the docs (IMX23RM.pdf) the interrupts for I2C are 26 > and 27 that why I assigned these two in the dts. You might want to try my for-next branch or wait for 3.8-rc1, maybe the DMA termination patch helps? Also enabling I2C debug messages is probably worth it. Regards, Wolfram -- Pengutronix e.K. | Wolfram Sang | Industrial Linux Solutions | http://www.pengutronix.de/ |
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