[PATCH 4/4] tty: omap-serial: support setting of hardware flow control in dts
From: Frans Klaver <hidden>
Date: 2014-08-19 12:15:47
Also in:
linux-arm-kernel, linux-omap, linux-serial, lkml
Subsystem:
open firmware and flattened device tree bindings, the rest, tty layer and serial drivers · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
This makes hardware flow control availability configurable from the device tree. Signed-off-by: Frans Klaver <redacted> --- Documentation/devicetree/bindings/serial/omap_serial.txt | 1 + drivers/tty/serial/omap-serial.c | 4 ++++ 2 files changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/serial/omap_serial.txt b/Documentation/devicetree/bindings/serial/omap_serial.txt
index 342eedd..1b629e9 100644
--- a/Documentation/devicetree/bindings/serial/omap_serial.txt
+++ b/Documentation/devicetree/bindings/serial/omap_serial.txt@@ -8,3 +8,4 @@ Required properties: Optional properties: - clock-frequency : frequency of the clock input to the UART +- has-hw-flow-control : the hardware has flow control capability
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 57664b9..7d3b3d2 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c@@ -1598,6 +1598,10 @@ static struct omap_uart_port_info *of_get_uart_port_info(struct device *dev) of_property_read_u32(dev->of_node, "clock-frequency", &omap_up_info->uartclk); + + if (of_property_read_bool(dev->of_node, "has-hw-flow-control")) + omap_up_info->flags |= UPF_HARD_FLOW; + return omap_up_info; }
--
1.9.3