On Tue, Mar 12, 2019 at 3:44 PM Andreas Schwab <schwab@xxxxxxx> wrote:
>
> On Mär 12 2019, Yash Shah <yash.shah@xxxxxxxxxx> wrote:
>
> > This patch series adds a PWM driver and DT documentation
> > for HiFive Unleashed board. The patches are mostly based on
> > Wesley's patch.
>
> Heartbeat trigger still doesn't work for me.
You need to make sure the period setting is passed via the
conventional way in DT file.
Example:
pwmleds {
compatible = "pwm-leds";
heartbeat {
pwms = <&L45 0 10000000 0>;
max-brightness = <255>;
linux,default-trigger = "heartbeat";
};
};
I have tested on HiFive unleashed board. To modify DT file I performed
the following steps:
Use the open-source FSBL from:
https://github.com/sifive/freedom-u540-c000-bootloader
Modify the fsbl/ux00_fsbl.dts file and re-build the fsbl.bin
Steps for using fsbl.bin in HiFive Unleashed board:
https://github.com/sifive/freedom-u540-c000-bootloader/issues/9
>
> Andreas.
>
> --
> Andreas Schwab, SUSE Labs, schwab@xxxxxxx
> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
> "And now for something completely different."
