[PATCH 3/3] tty: omap-serial: support setting of hardware flow control in dts
From: Frans Klaver <hidden>
Date: 2014-07-29 15:03:10
Also in:
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 | 3 +++ 2 files changed, 4 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 ff2d931..87df0ee 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c@@ -1660,6 +1660,9 @@ static int serial_omap_probe(struct platform_device *pdev) return -EPROBE_DEFER; wakeirq = irq_of_parse_and_map(pdev->dev.of_node, 1); omap_up_info = of_get_uart_port_info(&pdev->dev); + if (of_property_read_bool(pdev->dev.of_node, + "has-hw-flow-control")) + omap_up_info->flags |= UPF_HARD_FLOW; pdev->dev.platform_data = omap_up_info; } else { uartirq = platform_get_irq(pdev, 0);
--
1.9.3