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authorAlexander Shiyan <shc_work@mail.ru>2014-09-06 07:20:15 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-09-08 15:35:03 -0700
commit62b0a1b3e7593e0647db9ecc5e7809e4410acb81 (patch)
treee1a998c79be08f50ead33795cbd73e936b5256cb /Documentation/devicetree/bindings/serial
parent2f2dafe77df2c78e189a9fa6b1879dffd06ae5a1 (diff)
serial: clps711x: Use mctrl_gpio helpers for handling modem signals
CLPS711X serial driver uses the system wide registers to control the modem signals. Now gpio-syscon driver can be used for this purposes. mctrl_gpio helpers allow us to create GPIO bindings for any of modem/tty control signals that extends the functionality of the driver. This patch makes such change. This change does not break any current DT bindings, since DT support for this platform is not introduced yet. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/devicetree/bindings/serial')
-rw-r--r--Documentation/devicetree/bindings/serial/cirrus,clps711x-uart.txt7
1 files changed, 5 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/serial/cirrus,clps711x-uart.txt b/Documentation/devicetree/bindings/serial/cirrus,clps711x-uart.txt
index 12f3cf834de..caaeb258357 100644
--- a/Documentation/devicetree/bindings/serial/cirrus,clps711x-uart.txt
+++ b/Documentation/devicetree/bindings/serial/cirrus,clps711x-uart.txt
@@ -8,7 +8,8 @@ Required properties:
- syscon: Phandle to SYSCON node, which contain UART control bits.
Optional properties:
-- uart-use-ms: Indicate the UART has modem signal (DCD, DSR, CTS).
+- {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD
+ line respectively.
Note: Each UART port should have an alias correctly numbered
in "aliases" node.
@@ -24,5 +25,7 @@ Example:
interrupts = <12 13>;
clocks = <&clks 11>;
syscon = <&syscon1>;
- uart-use-ms;
+ cts-gpios = <&sysgpio 0 GPIO_ACTIVE_LOW>;
+ dsr-gpios = <&sysgpio 1 GPIO_ACTIVE_LOW>;
+ dcd-gpios = <&sysgpio 2 GPIO_ACTIVE_LOW>;
};