Hello Sam,
On 2/1/22 21:40, Sam Ravnborg wrote:
[snip]
I took a look at the datasheets - and all ssd1305, ssd1306 and ssd1307 are the same. They have timing constrains on the Vcc. The random schematic I found on the net showed me that a PWM was used to control the Vcc voltage - which again is used to control the brightness.
All the above has nothing to do with backlight - I had this mixed up in my head.
Yes, same here. I was leaning towards fixing the DT binding but then due Geert comment and after reading the datasheets for ssd130{5,6,7} like you I had the same understanding.
Glad that you agree.
[snip]
Last I recommend to drop the fbdev variant - if the drm driver has any regressions we can fix them. And I do not see any other way to move users over. Unless their setup breaks then they do not change.
As I mentioned in this thread I wouldn't propose to drop the fbdev variant. I prefer to use the carrot and not the stick. Peter Robinson suggested to make the driver mutually exclusive and add !FB_SSD1307 in the config symbol.
I think that makes sense and will do it in v2.
Best regards,