Difference between revisions of "Mux instructions"
From IGEP - ISEE Wiki
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For more information go to [[Mux configuration|this page]]. | For more information go to [[Mux configuration|this page]]. | ||
| − | = Feedback and Contributing = | + | = Feedback and Contributing = |
| − | At any point, if you see a mistake you can contribute to this How-To. | + | At any point, if you see a mistake you can contribute to this How-To. |
| + | |||
| + | = Disable Peripherals = | ||
| + | |||
| + | === BT/WIFI === | ||
| + | |||
| + | See [[Frequently Asked Questions and Their Answers#Is_it_possible_to_config_the_wireless_LAN_and_bluetooth_so_they_are_completely_off.2C_and_not_consuming_any_power_at_all.3F|FAQ]] to see with pins need to configure.<br> | ||
| + | |||
| + | ==== Bluetooth<br> ==== | ||
| + | |||
| + | ===== First way: ===== | ||
| + | |||
| + | Logging with root user via SSH or Serial cable.<br> | ||
| + | |||
| + | Go to /sys/kernel/debug/omap_mux/<br> | ||
| + | |||
| + | Set sdmmc2_dat5 to gpio137 (mode 4): | ||
| + | <pre>echo 0x004 > sdmmc2_dat5 </pre> | ||
| + | Revise that: | ||
| + | <pre>root@localhost:/sys/kernel/debug/omap_mux# cat sdmmc2_dat5 | ||
| + | name: sdmmc2_dat5.gpio_137 (0x48002166/0x136 = 0x0004), b ah3, t NA | ||
| + | mode: OMAP_PIN_OUTPUT | OMAP_MUX_MODE4 | ||
| + | signals: sdmmc2_dat5 | sdmmc2_dir_dat1 | cam_global_reset | sdmmc3_dat1 | gpio_137 | hsusb3_tll_stp | mm3_rxdp | safe_mode | ||
| + | </pre> | ||
| + | Go to: /sys/class/gpio/ | ||
| + | |||
| + | Check that gpio137 is in user space: | ||
| + | <pre>root@localhost:/sys/class/gpio# ls | ||
| + | export gpio137 gpio138 gpio139 gpio170 gpio64 gpiochip0 gpiochip128 gpiochip160 gpiochip192 gpiochip32 gpiochip64 gpiochip96 unexport | ||
| + | root@localhost:/sys/class/gpio# | ||
| + | </pre> | ||
| + | If you don't have it, you should export gpio137: <br> | ||
| + | <pre>echo 137 > /sys/class/gpio/export </pre> | ||
| + | Set gpio137 to low value to disable bluetooth: | ||
| + | <pre>echo 0 > /sys/class/gpio/gpio137/value</pre> | ||
| + | Revise that: | ||
| + | <pre>root@localhost:/sys/class/gpio# cat /sys/class/gpio/gpio137/value | ||
| + | 0 | ||
| + | root@localhost:/sys/class/gpio# | ||
| + | </pre> | ||
| + | |||
| + | <br> | ||
| + | |||
| + | === TP65950 PCM VSP<br> === | ||
| + | |||
| + | Please contribute<br> | ||
= Edit mux = | = Edit mux = | ||
| Line 20: | Line 65: | ||
default: yes | default: yes | ||
| − | More information about RS485 [[ | + | More information about RS485 [[Connectors Summary#J940_connector|here]] and [http://en.wikipedia.org/wiki/RS-485 here]: |
You can test new configuration using [[How to use UARTs|this tutorial]]: | You can test new configuration using [[How to use UARTs|this tutorial]]: | ||
'''Under construction''' | '''Under construction''' | ||
Revision as of 16:23, 31 January 2012
Contents
Overview
Detailed instructions to configure mux
For more information go to this page.
Feedback and Contributing
At any point, if you see a mistake you can contribute to this How-To.
Disable Peripherals
BT/WIFI
See FAQ to see with pins need to configure.
Bluetooth
First way:
Logging with root user via SSH or Serial cable.
Go to /sys/kernel/debug/omap_mux/
Set sdmmc2_dat5 to gpio137 (mode 4):
echo 0x004 > sdmmc2_dat5
Revise that:
root@localhost:/sys/kernel/debug/omap_mux# cat sdmmc2_dat5 name: sdmmc2_dat5.gpio_137 (0x48002166/0x136 = 0x0004), b ah3, t NA mode: OMAP_PIN_OUTPUT | OMAP_MUX_MODE4 signals: sdmmc2_dat5 | sdmmc2_dir_dat1 | cam_global_reset | sdmmc3_dat1 | gpio_137 | hsusb3_tll_stp | mm3_rxdp | safe_mode
Go to: /sys/class/gpio/
Check that gpio137 is in user space:
root@localhost:/sys/class/gpio# ls export gpio137 gpio138 gpio139 gpio170 gpio64 gpiochip0 gpiochip128 gpiochip160 gpiochip192 gpiochip32 gpiochip64 gpiochip96 unexport root@localhost:/sys/class/gpio#
If you don't have it, you should export gpio137:
echo 137 > /sys/class/gpio/export
Set gpio137 to low value to disable bluetooth:
echo 0 > /sys/class/gpio/gpio137/value
Revise that:
root@localhost:/sys/class/gpio# cat /sys/class/gpio/gpio137/value 0 root@localhost:/sys/class/gpio#
TP65950 PCM VSP
Please contribute
Edit mux
UART1 in J990
Use ebuddies to configure UART1 in J990, go to igep.ini:
board.ei485= [yes, no]
Format: <string>
no: disable ei485, use UART1 as RS232, supported by igep0020
default: yes
More information about RS485 here and here:
You can test new configuration using this tutorial:
Under construction
