Hi Andreas, On Tue, May 7, 2019 at 3:09 PM Andreas Schwab <schwab@xxxxxxx> wrote: > > On Mai 02 2019, Yash Shah <yash.shah@xxxxxxxxxx> wrote: > > > The PWM default output state is high (When duty cycle is 0), So I > > guess leds will remain on by default. > > So that's the bug that needs to be fixed. Sorry I didn't probably get you before. I now understood the scenario. Leds on HiFive Unleashed are wired to supply instead of ground. And as per ./Documentation/devicetree/bindings/leds/leds-pwm.txt, you need to provide additional property "active-low" in such case. - active-low : (optional) For PWMs where the LED is wired to supply rather than ground. The leds will remain off by default when you add the "active-low" property under the pwm-leds subnode in your DT file. So, this isn't a bug in the driver code. For DT file change, you may refer https://github.com/yashshah7/riscv-linux/commit/dd55057a26150e50525643a423b20e07b72617b5 Can you test this at your end and confirm? - Yash > > 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." -- The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. If you are not the intended recipient of this message please do not read, copy, use or disclose this communication and notify the sender immediately. It should be noted that any review, retransmission, dissemination or other use of, or taking action or reliance upon, this information by persons or entities other than the intended recipient is prohibited.
