I think a good example of how to enable pins and the PRUs in the same
overlay file would be Beagelpilot. I'll check it's dts's too since I'm
currently not doing anything . . .
On Tue, Dec 8, 2015 at 3:47 AM, William Hermans <yyrk...@gmail.com> wrote:
> The aliases am33xx_pinmux, and pruss already exist in the stock board
> files. But look at this snippet as an example.
>
>
>
>
>
> *fragment@0 { target = <&am33xx_pinmux>; __overlay__ {
> bb_gpio_relay_pins: pinmux_bb_gpio_relay_pins *{
> pinctrl-single,pins = <
> BONE_P9_15 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /*
> gpmc_a0.gpio1_16 */
> BONE_P9_23 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /*
> gpmc_a1.gpio1_17 */
> BONE_P9_12 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /*
> gpmc_be1n.gpio1_28 */
> BONE_P9_27 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /*
> mcasp0_fsr.gpio3_19 */
> >;
> };
>
> };
> };
> fragment@1 {
> target-path="/";
> __overlay__ {
>
> leds {
>
> *pinctrl-names = "default"; pinctrl-0 =
> <&bb_gpio_relay_pins>;*
>
> compatible = "gpio-leds";
>
> jp@1 {
> label = "relay-jp1";
> gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
> default-state = "keep";
> };
>
> jp@2 {
> label = "relay-jp2";
> gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;
> default-state = "keep";
> };
>
> jp@3 {
> label = "relay-jp3";
> gpios = <&gpio1 17 GPIO_ACTIVE_HIGH>;
> default-state = "keep";
> };
>
> jp@4 {
> label = "relay-jp4";
> gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
> default-state = "keep";
> };
> };
> };
> };
>
> Passed that, why do you need to "bind" these pins to the PRUs ? The PRU's
> can access any GPIO / hardware module directly through it's register
> addresses. Whats more, I'm not even sure what you're trying to do is
> possible. The PRUs are not like any of the other hardware modules on the
> processor, in that they are directly connected to pads / pins.
>
> On Tue, Dec 8, 2015 at 2:59 AM, Micka <mickamus...@gmail.com> wrote:
>
>> Hi,
>>
>> I'm trying to use the pru and I got :
>>
>> pruss_uio 4a300000.pruss: No children
>>
>>
>> my pru.dtsi file :
>>
>> &am33xx_pinmux {
>>
>> pru_pru_pins: pinmux_pru_pru_pins {
>> pinctrl-single,pins = <
>> 0x158 0x72 /* spi0_d1.i2c1_sda, SLEWCTRL_SLOW | INPUT_PULLUP | MODE2 */
>> 0x15c 0x72 /* spi0_cs0.i2c1_scl, SLEWCTRL_SLOW | INPUT_PULLUP | MODE2 */
>> >;
>> };
>> };
>>
>> &pruss{
>> status = "okay";
>> pinctrl-names = "default";
>> pinctrl-0 = <&pru_pru_pins>;
>> };
>>
>>
>> What is wrong ?
>> …
>>
>> Micka,
>>
>> --
>> For more options, visit http://beagleboard.org/discuss
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>
>
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