(these all mutually support each other but they can be different levels of depth)
the 5 components of secure attachment
safety
attunement
comfort / physical affection
unconditional delight in your existence
unconditional support for your explorations
"trusting that the other person will listen to you for as long as you need, in whatever way you & they both need, in order for you to feel heard about something that matters to you to be heard about"
also other things, some of which are less relevant to a parent-child relationship
sense of cultural commonalities/touchstones