On Tue, 26 Oct 2021 01:18:24 +0200 Linus Walleij <linus.walleij@xxxxxxxxxx> wrote: > Hi Alistair, > > On Mon, Oct 25, 2021 at 1:42 PM Alistair Francis <alistair@xxxxxxxxxxxxx> wrote: > > > From: Mylène Josserand <mylene.josserand@xxxxxxxxxxxxxxxxxx> > > > > Add the Cypress TrueTouch Generation 5 touchscreen device tree bindings > > documentation. It can use I2C or SPI bus. > > This touchscreen can handle some defined zone that are designed and > > sent as button. To be able to customize the keycode sent, the > > "linux,code" property in a "button" sub-node can be used. > > > > Signed-off-by: Mylène Josserand <mylene.josserand@xxxxxxxxxxxxxxxxxx> > > Message-Id: <20170529144538.29187-3-mylene.josserand@xxxxxxxxxxxxxxxxxx> > > Signed-off-by: Alistair Francis <alistair@xxxxxxxxxxxxx> > > > +title: Cypress cyttsp touchscreen controller, generation 5 > (...) > > + compatible: > > + const: cypress,cyttsp5 > > Is this the real product name? When I rewrote the bindings for > the original "CYTTSP", actually "Cypress TrueTouch Standard Product" > it came out that the actual product names were CY8CTMA340 > and CY8CTMA341. "CYTTSP" was a marketing name for the > whole family. > > See > Documentation/devicetree/bindings/input/touchscreen/cypress,cy8ctma340.yaml > > If the actual products have some product names such as > CY8* then use these as compatibles instead and just write in the > decription that it is Cypress TrueTouch Standard Product series 5. > Since I have uptreamed 4 devicetrees containing that touchscreen (and marked that as todo). I tried to look it up: https://fccid.io/NOIKBN249/Internal-Photos/Internal-Photos-3802584.pdf Page 4 might be interesting. Something below that 3d code (zbarimg does not recognize it) Peeling up the label reveals: TT21000 -44LQI 1802 TWN 6491U0 (two illegible characters) You find it in the net: https://www.digipart.com/part/TT21000-48LQI36T Regards, Andreas
