On 17/07/2023 14:23, Andrea Collamati wrote: > On 7/17/23 09:17, Krzysztof Kozlowski wrote: >>>> Shouldn't this binding be just merged with existing mcp4725? Are you >>>> sure it's not similar device, IOW, are you sure you do not have vref supply? >>>> >>> Unfortunately they are not that similar. MCP4728 has two vref choices: >>> >>> - Use Vdd (power supply) as Vref >>> >>> - User Internal 2.048 V Vref source. >> Exactly the same as existing mcp4726, so what is the problem? > > MCP4726 has 2 separate pins, VDD and VREF that can be both used as external Vref depending on configuration. > > MCP4728 has only one external vref pin, VDD pin. The other vref source is internal and fixed to 2.048V. > > Furthermore MCP4728 has four independent channels. For each channels it's possible to choose whether > > using VDD (External VRef) or 2.048V (Internal Vref). Indeed, so new binding makes sense. Best regards, Krzysztof
