diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/amba-pl011.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index 37257badcb97..8a857bb34fbb 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -2475,19 +2475,34 @@ static int __init pl011_early_console_setup(struct earlycon_device *device, if (!device->port.membase) return -ENODEV; - /* On QDF2400 SOCs affected by Erratum 44, the "qdf2400_e44" must - * also be specified, e.g. "earlycon=pl011,<address>,qdf2400_e44". - */ - if (!strcmp(device->options, "qdf2400_e44")) - device->con->write = qdf2400_e44_early_write; - else - device->con->write = pl011_early_write; + device->con->write = pl011_early_write; return 0; } OF_EARLYCON_DECLARE(pl011, "arm,pl011", pl011_early_console_setup); OF_EARLYCON_DECLARE(pl011, "arm,sbsa-uart", pl011_early_console_setup); -EARLYCON_DECLARE(qdf2400_e44, pl011_early_console_setup); + +/* + * On Qualcomm Datacenter Technologies QDF2400 SOCs affected by + * Erratum 44, traditional earlycon can be enabled by specifying + * "earlycon=qdf2400_e44,<address>". Any options are ignored. + * + * Alternatively, you can just specify "earlycon", and the early console + * will be enabled with the information from the SPCR table. In this + * case, the SPCR code will detect the need for the E44 work-around, + * and set the console name to "qdf2400_e44". + */ +static int __init +qdf2400_e44_early_console_setup(struct earlycon_device *device, + const char *opt) +{ + if (!device->port.membase) + return -ENODEV; + + device->con->write = qdf2400_e44_early_write; + return 0; +} +EARLYCON_DECLARE(qdf2400_e44, qdf2400_e44_early_console_setup); #else #define AMBA_CONSOLE NULL |