Date: Wed, 22 Jan 2020 08:54:38 +0100 From: Hans Bentum <jwbentum44@gmail.com> To: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>, =?UTF-8?Q?Manuel_St=C3=BChn?= <freebsdnewbie@freenet.de> Subject: Re: How to get pin to mode 6 on beagle bone black Message-ID: <CAH4pBpPp06u8e0JtBWWzcQbr2WRhoSmS5d2hpC=NrgzCu1P15A@mail.gmail.com> In-Reply-To: <20200120212547.aa3a36c31b90d4438250c367@freenet.de> References: <CAH4pBpP2oC-8Vjm5AFMuQopZ-6DvQG_suX5yknv6nYTkLe8yPQ@mail.gmail.com> <20200115220647.1958e8639dc718e714775fed@freenet.de> <CAH4pBpMKktrPFYcK2y0zECQJFKUiOmvv5pbBcQ2ooqycuvHqHQ@mail.gmail.com> <20200116213411.ba213b01885d2108c9ace7a5@freenet.de> <CAH4pBpMck41ie2K_r11sU87XvC1K0BtgYPHoRjmJHfjMUWcWCw@mail.gmail.com> <20200120212547.aa3a36c31b90d4438250c367@freenet.de>
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>
> Hello Manuel,
>
> Thanks a lot for your help. I am able to read the pin 8_16 in mode 6 by
> the pru program now.
> I had to merge the overlay to turn the pru on and to put the pin in mode 6
> into the same overlay to
> get it working. (Maybe you want to publish your other ovelay to enable the
> pruss also to keep it separate).
>
> But for now I use the following overlay:
>
> /dts-v1/;
> /plugin/;
> / {
>
> compatible="ti,am335x-bone-black","ti,am335x-bone","ti,am33xx";
> fragment@0 {
> target-path="/ocp";
> __overlay__ {
> pruss@4a300000 {
> compatible = "ti,pruss-v2";
> reg = <0x4a300000 0x080000>;
> interrupt-parent = <&intc>;
> interrupts = <20 21 22 23 24 25 26 27>;
> status = "okay";
> pinctrl-names = "default";
> pinctrl-0 = <&pru_pru_pins>;
> };
> };
> };
>
> fragment@1 {
> target = <&am33xx_pinmux>;
> __overlay__ {
> pru_pru_pins: pinmux_pru_pru_pins {
> pinctrl-single,pins = <
> 0x38 0x26 /* Pin 8_16 in gpmc_ad14 mode 6 */
> >;
> };
> };
> };
> };
>
> The test assembly program I published in the first post works now.
>
> Thanks,
>
> Hans
>
>
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