Hi Rouven, Am 13.12.18 um 08:44 schrieb Rouven Czerwinski: > Add the compatible for the Raspberry Pi AUX UART and an init function which > enables it via the aux register and configures the correct shift value. > > Signed-off-by: Rouven Czerwinski <[email protected]> > --- > drivers/serial/serial_ns16550.c | 25 +++++++++++++++++++++++++ > 1 file changed, 25 insertions(+) > > diff --git a/drivers/serial/serial_ns16550.c b/drivers/serial/serial_ns16550.c > index 8ddcfdbef..7a4054a67 100644 > --- a/drivers/serial/serial_ns16550.c > +++ b/drivers/serial/serial_ns16550.c > @@ -253,6 +253,20 @@ static void ns16550_jz_init_port(struct console_device > *cdev) > ns16550_serial_init_port(cdev); > } > > +static void rpi_init_port(struct console_device *cdev) > +{ > + struct ns16550_priv *priv = to_ns16550_priv(cdev); > + > + writeb(0x01, 0x3f215004); > + priv->plat.shift = 2; > + /* > + * We double the clock rate since the 16550 will divide by 16 > + * (instead of 8 required by the BCM2835 peripheral manual) > + */ > + priv->plat.clock = priv->plat.clock*2; > + ns16550_serial_init_port(cdev); > +}
Formatting is broken here, you are using spaces instead of tabs.
Probably using checkpatch will show it.
> /*********** Exposed Functions **********************************/
>
> /**
> @@ -353,6 +367,11 @@ static __maybe_unused struct ns16550_drvdata
> tegra_drvdata = {
> .linux_console_name = "ttyS",
> };
>
> +static struct ns16550_drvdata rpi_drvdata = {
> + .init_port = rpi_init_port,
> + .linux_console_name = "ttyS",
> +};
same here.
> static int ns16550_init_iomem(struct device_d *dev, struct ns16550_priv
> *priv)
> {
> struct resource *iores;
> @@ -527,6 +546,12 @@ static struct of_device_id ns16550_serial_dt_ids[] = {
> .compatible = "ingenic,jz4740-uart",
> .data = &jz_drvdata,
> },
> +#endif
> +#if IS_ENABLED(CONFIG_MACH_RPI_COMMON)
> + {
> + .compatible = "brcm,bcm2835-aux-uart",
> + .data = &rpi_drvdata,
> + },
> #endif
> {
> /* sentinel */
>
--
Regards,
Oleksij
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