Got a warning compiling a new dtb, any DTB gurus out there?

justwantin · 12-27-2020, 02:34 AM

I wanted to boot a banana pro with a gpio pin set to out and at 3.3V and have just compiled a new sun7i-a20-bananapro.dtb. It works fine, however, I had a warning when I compiled the .dtb which I don't understand and a search for an explanation was unsuccesful. Perhaps someone on the list can enlighten me.

Here's the warning:

Quote:

DTC arch/arm/boot/dts/sun7i-a20-bananapro.dtb
arch/arm/boot/dts/sun7i-a20-bananapro.dts:68.4-24: Warning (gpios_property): /leds/pwr-led:gpios: property size (12) too small for cell size 3

Here's a snippit from the dts:

Code:

leds {
                compatible = "gpio-leds";
                
                pwr-led {
                        label = "bananapro:red:pwr";
                        gpios = <&pio 14 GPIO_ACTIVE_HIGH>;
                        default-state = "on";
                };

                blue {
                        label = "bananapro:blue:usr";
                        gpios = <&pio 6 2 GPIO_ACTIVE_HIGH>;
                };
                <snipped>

The third line in the "pwr-led" node is line 68 and everything other than that node is original dts. I've never had warnings compiling after adding nodes for iio sensors in this .dts

sndwvs · 12-27-2020, 03:23 AM

here is a similar situation and it is explained why.

justwantin · 12-27-2020, 03:42 AM

Thanks for that link. I'll have a think about it later .... been sitting here too long .... time to go eat some leftover turkey.

Cheers