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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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en:c_hardware_i2c [2017/01/19 13:26] odroid [I2C] |
en:c_hardware_i2c [2017/06/20 13:18] brian.kim [How to change the I2C clock speed] |
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| Change the DTB file for i2c-2 (i2c channel #2) | Change the DTB file for i2c-2 (i2c channel #2) | ||
| <code> | <code> | ||
| - | dtput -t i /media/boot/meson64_odroidc2.dtb /i2c@c11087c0 master_i2c_speed "100000" | + | fdtput -t i /media/boot/meson64_odroidc2.dtb /i2c@c11087c0 master_i2c_speed "100000" |
| sync | sync | ||
| reboot | reboot | ||
| Line 55: | Line 55: | ||
| If you want to go back to original 300Khz mode, change "100000" to "300000".\\ | If you want to go back to original 300Khz mode, change "100000" to "300000".\\ | ||
| - | **Actual I2C clock speed** (Measured with oscilloscope)\\ | + | **Actual I2C clock speed** (Measured with an oscilloscope)\\ |
| In 300Khz mode : 270Khz \\ | In 300Khz mode : 270Khz \\ | ||
| In 100Khz mode : 80Khz \\ | In 100Khz mode : 80Khz \\ | ||
