On Wed, Nov 24, 2021 at 1:39 AM Guenter Roeck <linux@xxxxxxxxxxxx> wrote: > > On 11/23/21 4:14 AM, Alistair Francis wrote: > > On Tue, Nov 16, 2021 at 9:10 AM Andreas Kemnade <andreas@xxxxxxxxxxxx> wrote: > >> > >> Hi, > >> > >> this all creates a lot of question marks... > >> One of my main question is whether sy7636a = sy7636 (at least the > >> driver in the kobo vendor kernels does not have the "A" at the end, > >> whic does not necessarily mean a difference). > >> > >> https://www.silergy.com/products/panel_pmic > >> lists only a SY7636ARMC, so chances are good that the letters were just > >> stripped away by the driver developers. Printing on chip package is > >> cryptic so it is not that helpful. It is just "BWNBDA" > > > > I don't have a definite answer for you. But I think it's sy7636a > > > > The page you linked to above lists SY7636ARMC as well as SY7627RMC, > > SY7570RMC. That makes me think that the RMC is a generic suffix and > > this actual IC is the SY7636A. > > > > Almost all chips have an ordering suffix, indicating things like > temperature range or packaging. The datasheet says: > > Ordering Information > SY7636 □(□□)□ > | Temperature Code (C) > | Package Code (RM) > | Optional Spec Code (A) > > The datasheet otherwise refers to the chip as SY7636A. To me this seems like SY7636A is the correct name then. Alistair > > Guenter
