Hi Simon,
I used DP83848C about 10 years ago and it was really easy to use on NuttX
("just works").Then about 3 years ago I used LAN8740AI with STM32H743 and it also worked, but it required some tweaks to configure the right PHY registers. BTW, you are not limited only to those two options we cited, enter inside boards/ and run: "git grep CONFIG_ETH0_PHY" to see all other PHYs supported by NuttX. But of course, if you want the "comfort zone" stay with DP83848C, but keep in mind it has disadvantages: i.e. 40-100ms startup time vs 20ms of KSZ8061. Also KSZ8061 has better EMI. And there is KSZ8061 with automotive grade. BR, Alan On Sun, Jun 8, 2025 at 2:20 PM Simon Filgis <si...@ingenieurbuero-filgis.de.invalid> wrote: > Seems like > > > 1. DP83848C > There is some code for it in stm32_x.c and it is placed on an old > evaluation board of STM: STM32469I-EVAL > And another board, that is already in nuttx boards: > > https://www.viewtool.com/index.php/en/36-2016-09-26-03-58-56/99-ficus-stm32f107 > Not sure where to by the second board and how good support is. > 2. KSZ90x1 > There seems to be code for it in stm32_x.c and I have it running in two > SAMV7 projects. But there is no board in the tree for usage or I don't > find > it. > 3. KSZ8081 > There is some code for it in stm32_x.c and it is placed on an old > evaluation board: linum-stm32h753bi > Cant find a vendor for the board > 4. KSZ8061 > There seems to be code for it in stm32_x.c and I have it running in two > SAMV7 projects. But there is no board in the tree for usage with STM32. > 5. KSZ8051 > There seems to be code for it in stm32_x.c and I have it running in two > SAMV7 projects. But there is no board in the tree for usage with STM32. > > > > - So KSZ8061 has a good change and I know it performs well in Nuttx > with SAMv7, but > - DP83848C has a old board in tree very near to the target processor: > STM32469I - while I will have to use STM32F479NG. > > > Are there any suggestions on how to decide between those two? > Did I miss an option? > > > Best Regards, > > > Simon > > > -- > Hard- and Softwaredevelopment Consultant > > Geschäftsführung: Simon Filgis > USt-IdNr.: DE305343278 > ISO9001:2015 <https://activities.ingenieurbuero-filgis.de/certifications> > > > On Sun, Jun 8, 2025 at 6:06 PM Simon Filgis < > si...@ingenieurbuero-filgis.de> > wrote: > > > Dear all, > > > > I want to add ethernet to a new project based on STM32F479NGH6. > > > > Has somebody worked with this configuration? Any tips or recommendations > > in choosing a MAC phy? > > > > I would like to have a proof of concept (switch to nuttx) with very > little > > effort. > > > > Best regards, > > > > Simon > > > > -- > > Hard- and Softwaredevelopment Consultant > > > > Geschäftsführung: Simon Filgis > > USt-IdNr.: DE305343278 > > ISO9001:2015 <https://activities.ingenieurbuero-filgis.de/certifications > > > > >
