[U-Boot-Users] MX31ADS: I2C1 bus
Hi Sascha,
I downloaded current u-boot repo to perform a simple test on MX31ADS: I just have to verify that an I2C component connected to JP13 is detected by U-Boot (iprobe). So I enabled the I2C support in MX31ADS config file:
/* I2C */ #define CONFIG_HARD_I2C 1 #define CONFIG_I2C_MXC 1 #define CFG_I2C_MX31_PORT1 1 #define CFG_I2C_SPEED 100000 #define CFG_I2C_SLAVE 0xfe
U-Boot builds and boots fine however, when issuing iprobe command, SDA and SCL lines are stuck at ~2.1V. JP6 and JP7 are both in 2-3 position.
Am I missing something?
TIA, llandre
DAVE Electronics System House - R&D Department web: http://www.dave.eu email: r&d2@dave-tech.it
On Fri, Jun 06, 2008 at 10:46:16AM +0200, llandre wrote:
I downloaded current u-boot repo to perform a simple test on MX31ADS: I just have to verify that an I2C component connected to JP13 is detected by U-Boot (iprobe). So I enabled the I2C support in MX31ADS config file:
/* I2C */ #define CONFIG_HARD_I2C 1 #define CONFIG_I2C_MXC 1 #define CFG_I2C_MX31_PORT1 1 #define CFG_I2C_SPEED 100000 #define CFG_I2C_SLAVE 0xfe
U-Boot builds and boots fine however, when issuing iprobe command, SDA and SCL lines are stuck at ~2.1V. JP6 and JP7 are both in 2-3 position.
Am I missing something?
That looks like u-boot-v1. Sascha maintains the u-boot-v2 tree, which hopefully doesn't have any such #define cruft any more :-)
The v1 port was done by Guennadi Liakhovetski.
rsc
participants (2)
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llandre -
Robert Schwebel