Messages in this thread | | | Date | Tue, 12 Jun 2018 15:06:41 -0600 | From | Rob Herring <> | Subject | Re: [RFC PATCH 3/6] serial: 8250_omap: Add support for AM654 UART controller |
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On Tue, Jun 05, 2018 at 01:01:22AM -0500, Nishanth Menon wrote: > AM654 uses a UART controller that is compatible (partially) with > existing 8250 UART, however, has a few differences with respect to DMA > support and control paths. Introduce a base definition that allows us > to build up the differences in follow on patches. > > Cc: Sekhar Nori <nsekhar@ti.com> > Cc: Vignesh R <vigneshr@ti.com> > Signed-off-by: Nishanth Menon <nm@ti.com> > --- > Documentation/devicetree/bindings/serial/omap_serial.txt | 1 + > drivers/tty/serial/8250/8250_omap.c | 1 + > 2 files changed, 2 insertions(+) > > diff --git a/Documentation/devicetree/bindings/serial/omap_serial.txt b/Documentation/devicetree/bindings/serial/omap_serial.txt > index 4b0f05adb228..c35d5ece1156 100644 > --- a/Documentation/devicetree/bindings/serial/omap_serial.txt > +++ b/Documentation/devicetree/bindings/serial/omap_serial.txt > @@ -1,6 +1,7 @@ > OMAP UART controller > > Required properties: > +- compatible : should be "ti,am654-uart" for AM654 controllers
Not compatible with any existing TI 8250 UARTs?
> - compatible : should be "ti,omap2-uart" for OMAP2 controllers > - compatible : should be "ti,omap3-uart" for OMAP3 controllers > - compatible : should be "ti,omap4-uart" for OMAP4 controllers > diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c > index 1b337fee07ed..a019286f8bb6 100644 > --- a/drivers/tty/serial/8250/8250_omap.c > +++ b/drivers/tty/serial/8250/8250_omap.c > @@ -1115,6 +1115,7 @@ static const u8 am3352_habit = OMAP_DMA_TX_KICK | UART_ERRATA_CLOCK_DISABLE; > static const u8 dra742_habit = UART_ERRATA_CLOCK_DISABLE; > > static const struct of_device_id omap8250_dt_ids[] = { > + { .compatible = "ti,am654-uart" }, > { .compatible = "ti,omap2-uart" }, > { .compatible = "ti,omap3-uart" }, > { .compatible = "ti,omap4-uart", .data = &omap4_habit, }, > -- > 2.15.1 >
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