On 12/01/16 19:51, Peter Hurley wrote:
> Wasn't planning on sending this patch just yet, but oh well.
>
> On 01/12/2016 11:41 AM, Peter Hurley wrote:
>> Add DT earlycon for 8250_omap driver. This boot console is included
>> for kernels built with CONFIG_SERIAL_EARLYCON=y, CONFIG_OF=y,
>> CONFIG_SERIAL_8250_OMAP=y, and CONFIG_OF_EARLY_FLATTREE=y.
>>
>> This boot console is enabled with the command line option "earlycon"
>> (without "=<name>...") when the DT 'stdout-path' property matches a
>> compatible uart. For example,
>>
>> / {
>> chosen {
>> stdout-path = "serial0:115200";
>> };
>>
>> ....
>>
>> aliases {
>> serial0 = &uart0;
>> };
>>
>> ....
>>
>> ocp : ocp {
>> uart0 : serial@44e09000 {
>> compatible = "ti,omap3-uart";
>> }
>> };
>> };
>>
>> Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
>> ---
>> drivers/tty/serial/8250/8250_early.c | 20 ++++++++++++++++++++
>> 1 file changed, 20 insertions(+)
>>
>> diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c
>> index e7cdc0c..d1f6310 100644
>> --- a/drivers/tty/serial/8250/8250_early.c
>> +++ b/drivers/tty/serial/8250/8250_early.c
>> @@ -201,3 +201,23 @@ EARLYCON_DECLARE(rt288x, early_rt288x_setup);
>> OF_EARLYCON_DECLARE(rt288x, "ralink,rt2880-uart", early_rt288x_setup);
>>
>> #endif /* CONFIG_SERIAL_8250_RT288X */
>
> This patch may not apply because the context is sitting on top of
> unsubmitted code. Sorry.
>
> Regards,
> Peter Hurley
>
>> +
>> +#ifdef CONFIG_SERIAL_8250_OMAP
>> +
>> +static int __init early_omap8250_setup(struct earlycon_device *device,
>> + const char *options)
>> +{
>> + struct uart_port *port = &device->port;
>> +
>> + if (!(device->port.membase || device->port.iobase))
>> + return -ENODEV;
>> +
>> + port->regshift = 2;
>> + device->con->write = early_serial8250_write;
>> + return 0;
>> +}
I see you did not mean to send this out, but would the above still be
necessary with my patch [0]? I am wondering if with my patch you can
just add the below OF_EARLYCON_DECLARE() for OMAP?
>> +OF_EARLYCON_DECLARE(omap8250, "ti,omap2-uart", early_omap8250_setup);
>> +OF_EARLYCON_DECLARE(omap8250, "ti,omap3-uart", early_omap8250_setup);
>> +OF_EARLYCON_DECLARE(omap8250, "ti,omap4-uart", early_omap8250_setup);
>> +#endif
If so, would it make sense to include my patches [0] and [1] with this
series, or would you prefer that I just rebase on top of this? I see
that you have already made the same change that I made in patch 2 of my
series.
Cheers
Jon
[0] http://marc.info/?l=linux-serial&m=145259482325332&w=2
[1] http://marc.info/?l=linux-serial&m=145259482825342&w=2
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