[PATCH 2/3] serial: of_serial: Handle fifo-size property

Heikki Krogerus
2013-03-25T11:35:20Z

This will reduce the need for extra types in 8250.c just
in case the fifo size differs from the standard.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
---
Documentation/devicetree/bindings/tty/serial/of-serial.txt | 1 +
drivers/tty/serial/of_serial.c | 4 ++++
2 files changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/tty/serial/of-serial.txt b/Documentation/devicetree/bindings/tty/serial/of-serial.txt
index 8f01cb1..c13f0ce 100644
--- a/Documentation/devicetree/bindings/tty/serial/of-serial.txt
+++ b/Documentation/devicetree/bindings/tty/serial/of-serial.txt
@@ -33,6 +33,7 @@ Optional properties:
RTAS and should not be registered.
- no-loopback-test: set to indicate that the port does not implements loopback
test mode
+- fifo-size: the fifo size of the UART.

Example:

diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c
index b025d54..267711b 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/of_serial.c
@@ -97,6 +97,10 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
if (of_property_read_u32(np, "reg-shift", &prop) == 0)
port->regshift = prop;

+ /* Check for fifo size */
+ if (of_property_read_u32(np, "fifo-size", &prop) == 0)
+ port->fifosize = prop;
+
port->irq = irq_of_parse_and_map(np, 0);
port->iotype = UPIO_MEM;
if (of_property_read_u32(np, "reg-io-width", &prop) == 0) {
--
1.7.10.4