On 5/3/2014 2:52 AM, Hannes Hörting wrote:
> Hello!
>
> The work of Charles is great and very helpful:
> https://github.com/cdsteinkuehler/beaglebone-universal-io
>
> Now I want to customize the file to:
>
> 1. enable all GPIO from HDMI (because I disable the HDMI)
> 2. enable UART5 (because I disable the HDMI)
I intend for the HDMI pins to be a separate overlay which you would load
if you have disabled the on-board HDMI. I already made the eMMC
version, but ran out of steam before I did the HDMI and HDMIN.
> The steps I already made:
>
> 1. uncomment P8.27 - P8.46
> 2. uncomment "uart5"
>
> Now I have to set for P8_27:
> P8_26_default_pin: pinmux_P8_26_default_pin {
> pinctrl-single,pins = <0x07c 0x37>; }; /* Mode 7,
> Pull-Up, RxActive */
> P8_26_gpio_pin: pinmux_P8_26_gpio_pin {
> pinctrl-single,pins = <0x07c 0x2F>; }; /* Mode 7,
> RxActive */
> P8_26_gpio_pu_pin: pinmux_P8_26_gpio_pu_pin {
> pinctrl-single,pins = <0x07c 0x37>; }; /* Mode 7,
> Pull-Up, RxActive */
> P8_26_gpio_pd_pin: pinmux_P8_26_gpio_pd_pin {
> pinctrl-single,pins = <0x07c 0x27>; }; /* Mode 7,
> Pull-Down, RxActive */
>
> Replace _26 to _27
> But what for "0x07c" ?
> How are calculate or is there a list?
The bit definitions are in the "Control Module" section of the AM335x
Technical Reference Manual, generally section 9.3.1.50 (although check
the register list at the start of section 9.3 to be sure).
--
Charles Steinkuehler
[email protected]
--
For more options, visit http://beagleboard.org/discuss
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