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| author |   Alexander Shiyan <shc_work@mail.ru> | 2014-09-06 07:20:15 +0400 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-09-08 15:35:03 -0700 |
| commit | 62b0a1b3e7593e0647db9ecc5e7809e4410acb81 (patch) | |
| tree | e1a998c79be08f50ead33795cbd73e936b5256cb /Documentation/devicetree/bindings/serial | |
| parent | serial: serial_core.c: printk replacement (diff) | |
| download | linux-dev-62b0a1b3e7593e0647db9ecc5e7809e4410acb81.tar.xz linux-dev-62b0a1b3e7593e0647db9ecc5e7809e4410acb81.zip | |
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.txt | 7 |
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 12f3cf834deb..caaeb2583579 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>; }; |