如何在imx6dl的uboot中实现i2c的支持

只看该作者 · 2014-8-4 09:33

本帖最后由 leoywang 于 2014-8-4 10:40 编辑

请问管理员，
我这里uboot代码中没有对i2c配置，现在想对eeprom读写测试，希望在uboot中使用i2c，请问是否有指导文档，配置i2c参数和初始化i2c

imx6dl是否支持硬件i2c？

1万 · 2014-8-4 11:51

楼主你好，请问你使用的是linux BSP 还是android的？

只看该作者 · 2014-8-4 13:21

Rita，是linux BSP ，好像附件不能发送，带附件的回复我这里都看不到了
附件是我尝试配置的
但i2c probe测试还是有问题，检测不到，log如下：
U-Boot 2013.07-ga1cec87-dirty (Aug 04 2014 - 11:39:41)

CPU: Freescale i.MX6DL rev1.1 at 792 MHz
Reset cause: WDOG
Board: MX6-SabreSD
I2C: ready
DRAM:  1 GiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
*** Warning - bad CRC, using default environment

In: serial
Out: serial
Err: serial
Net: Phy not found
PHY reset timed out
FEC [PRIME]
Warning: failed to set MAC address

Hit any key to stop autoboot:  0
U-Boot >
U-Boot >
U-Boot > i2c probe
Valid chip addresses:wait_for_sr_state: failed sr=81 cr=a0 state=2020
i2c_init_transfer: failed for chip 0x0 retry=0
wait_for_sr_state: failed sr=81 cr=a0 state=2020
i2c_init_transfer: failed for chip 0x0 retry=1
wait_for_sr_state: failed sr=81 cr=a0 state=2020
i2c_init_transfer: failed for chip 0x0 retry=2
i2c_init_transfer: give up i2c_regs=021a8000
wait_for_sr_state: failed sr=81 cr=a0 state=2020
i2c_init_transfer: failed for chip 0x1 retry=0
wait_for_sr_state: failed sr=81 cr=a0 state=2020
i2c_init_transfer: failed for chip 0x1 retry=1
wait_for_sr_state: failed sr=81 cr=a0 state=2020
i2c_init_transfer: failed for chip 0x1 retry=2
i2c_init_transfer: give up i2c_regs=021a8000
wait_for_sr_state: failed sr=81 cr=a0 state=2020
i2c_init_transfer: failed for chip 0x2 retry=0
wait_for_sr_state: failed sr=81 cr=a0 state=2020