On Sun, Jul 28, 2024 at 04:43:42PM GMT, Krzysztof Kozlowski wrote: > On 28/07/2024 14:56, Alex Lanzano wrote: > >>>>> + > >>>>> + spi-cs-high: true > >>>> > >>>> You can drop it. > >>>> > >>> > >>> This is a required property in order for the display to function correctly. > >>> But I have no issues removing it if there's a better place to document it. > >> > >> The sharp LCD device or the board (e.g. via some inversion)? > >> > > > > The sharp LCD device itself. > > > > https://cdn.sparkfun.com/assets/d/e/8/9/7/LS013B7DH03_datasheet.pdf > > Page 16 of the PDF below shows the timing chart for it if interested > > OK, so you enforce chip select as always high and then someone comes > with a board which has a inversion and expect the SoC to drive it low, > as usually? In such system this would not work, would it? > > IOW, I think this is the first case where you require specific CS high > and this should make you think why... Ahh I see what you mean! I'll remove it. Best regard, Alex
