From: Noam Camus <noamc@xxxxxxxxxx> Add support for OF option "no-loopback-test" use case: simulator which does not implements loopback test mode. Signed-off-by: Noam Camus <noamc@xxxxxxxxxx> --- .../bindings/serial/snps-dw-apb-uart.txt | 2 ++ drivers/tty/serial/8250/8250_dw.c | 3 +++ 2 files changed, 5 insertions(+), 0 deletions(-) diff --git a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt index 289c40e..5d16047 100644 --- a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt +++ b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt @@ -33,6 +33,8 @@ Optional properties: - ri-override : Override the RI modem status signal. This signal will always be reported as inactive instead of being obtained from the modem status register. Define this if your serial port does not use this pin. +- no-loopback-test: set to indicate that the port does not implements loopback + test mode Example: diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index fe0b487..1a57105 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -370,6 +370,9 @@ static int dw8250_probe_of(struct uart_port *p, up->dma->txconf.dst_maxburst = p->fifosize / 4; } + if (of_find_property(np, "no-loopback-test", NULL)) + p->flags |= UPF_SKIP_TEST; + if (!of_property_read_u32(np, "reg-shift", &val)) p->regshift = val; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
