Hi! On Sun, Nov 15, 2020 at 11:24:25PM +0100, Michael Klein wrote: > Add gpio-line-names as documented in the Banana Pi wiki [1] and in the > schematics [2]. > > [1]: http://wiki.banana-pi.org/Banana_Pi_BPI-M2_ZERO#GPIO_PIN_define > [2]: https://drive.google.com/file/d/0B4PAo2nW2KfnMW5sVkxWSW9qa28/view > > Signed-off-by: Michael Klein <michael@xxxxxxxxxxxx> > --- > .../dts/sun8i-h2-plus-bananapi-m2-zero.dts | 64 +++++++++++++++++++ > 1 file changed, 64 insertions(+) > > diff --git a/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts b/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts > index 4c6704e4c57e..b4ddfaf01b45 100644 > --- a/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts > +++ b/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts > @@ -136,6 +136,70 @@ bluetooth { > > }; > > +&pio { > + gpio-line-names = > + /* PA */ > + "UART2-TX", "UART2-RX", "UART2-RTS", "UART2-CTS", > + "UART0-TXD", "UART0-RXD", "PWM1", "PA7-EINT7", > + "PA8-EINT8", "PA9-EINT9", "PA10-EINT10", "TWI0-SCK", > + "TWI0-SDA", "UART3-TX", "UART3-RX", "UART3-RTS", > + "UART3-CTS", "PA17-EINT17", "TWI1-SCK", "TWI1-SDA", > + "PA20-EINT20", "PA21-EINT21", "", "", > + "", "", "", "", "", "", "", "", IIRC, the point is to have the pin names that the vendor publishes. Looking at Documentation/devicetree/bindings/gpio/gpio.txt, it says: """ Optionally, a GPIO controller may have a "gpio-line-names" property. This is an array of strings defining the names of the GPIO lines going out of the GPIO controller. This name should be the most meaningful producer name for the system, such as a rail name indicating the usage. Package names such as pin name are discouraged: such lines have opaque names (since they are by definition generic purpose) and such names are usually not very helpful. """ In this case, from the link you gave above, I think having the CON*-P* names make more sense. Maxime
Attachment:
signature.asc
Description: PGP signature
