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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-03 20:01:02 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-03 20:01:02 +0400
commit49eb7b0750d9483c74e9c14ae6ea1e9d62481c3c (patch)
tree68f76b18328d070a4b5182f9ed82c2134cae16d2 /Documentation/devicetree
parent5142c33ed86acbcef5c63a63d2b7384b9210d39f (diff)
parent9ce4f8f3f45443922c98e25133b8c9790fc7949a (diff)
downloadlinux-49eb7b0750d9483c74e9c14ae6ea1e9d62481c3c.tar.xz
Merge tag 'tty-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty into next
Pull tty/serial driver updates from Greg KH: "Here is the big tty / serial driver pull request for 3.16-rc1. A variety of different serial driver fixes and updates and additions, nothing huge, and no real major core tty changes at all. All have been in linux-next for a while" * tag 'tty-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (84 commits) Revert "serial: imx: remove the DMA wait queue" serial: kgdb_nmi: Improve console integration with KDB I/O serial: kgdb_nmi: Switch from tasklets to real timers serial: kgdb_nmi: Use container_of() to locate private data serial: cpm_uart: No LF conversion in put_poll_char() serial: sirf: Fix compilation failure console: Remove superfluous readonly check console: Use explicit pointer type for vc_uni_pagedir* fields vgacon: Fix & cleanup refcounting ARM: tty: Move HVC DCC assembly to arch/arm tty/hvc/hvc_console: Fix wakeup of HVC thread on hvc_kick() drivers/tty/n_hdlc.c: replace kmalloc/memset by kzalloc vt: emulate 8- and 24-bit colour codes. printk/of_serial: fix serial console cessation part way through boot. serial: 8250_dma: check the result of TX buffer mapping serial: uart: add hw flow control support configuration tty/serial: at91: add interrupts for modem control lines tty/serial: at91: use mctrl_gpio helpers tty/serial: Add GPIOLIB helpers for controlling modem lines ARM: at91: gpio: implement get_direction ...
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/serial/atmel-usart.txt12
-rw-r--r--Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt33
-rw-r--r--Documentation/devicetree/bindings/serial/of-serial.txt1
-rw-r--r--Documentation/devicetree/bindings/serial/renesas,sci-serial.txt1
4 files changed, 44 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/serial/atmel-usart.txt b/Documentation/devicetree/bindings/serial/atmel-usart.txt
index 17c1042b2df8..a6391e70a8fd 100644
--- a/Documentation/devicetree/bindings/serial/atmel-usart.txt
+++ b/Documentation/devicetree/bindings/serial/atmel-usart.txt
@@ -13,8 +13,9 @@ Required properties:
Optional properties:
- atmel,use-dma-rx: use of PDC or DMA for receiving data
- atmel,use-dma-tx: use of PDC or DMA for transmitting data
-- rts-gpios: specify a GPIO for RTS line. It will use specified PIO instead of the peripheral
- function pin for the USART RTS feature. If unsure, don't specify this property.
+- {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD line respectively.
+ It will use specified PIO instead of the peripheral function pin for the USART feature.
+ If unsure, don't specify this property.
- add dma bindings for dma transfer:
- dmas: DMA specifier, consisting of a phandle to DMA controller node,
memory peripheral interface and USART DMA channel ID, FIFO configuration.
@@ -35,7 +36,12 @@ Example:
clock-names = "usart";
atmel,use-dma-rx;
atmel,use-dma-tx;
- rts-gpios = <&pioD 15 0>;
+ rts-gpios = <&pioD 15 GPIO_ACTIVE_LOW>;
+ cts-gpios = <&pioD 16 GPIO_ACTIVE_LOW>;
+ dtr-gpios = <&pioD 17 GPIO_ACTIVE_LOW>;
+ dsr-gpios = <&pioD 18 GPIO_ACTIVE_LOW>;
+ dcd-gpios = <&pioD 20 GPIO_ACTIVE_LOW>;
+ rng-gpios = <&pioD 19 GPIO_ACTIVE_LOW>;
};
- use DMA:
diff --git a/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt b/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt
new file mode 100644
index 000000000000..246c795668dc
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt
@@ -0,0 +1,33 @@
+* NXP SC16IS7xx advanced Universal Asynchronous Receiver-Transmitter (UART)
+
+Required properties:
+- compatible: Should be one of the following:
+ - "nxp,sc16is740" for NXP SC16IS740,
+ - "nxp,sc16is741" for NXP SC16IS741,
+ - "nxp,sc16is750" for NXP SC16IS750,
+ - "nxp,sc16is752" for NXP SC16IS752,
+ - "nxp,sc16is760" for NXP SC16IS760,
+ - "nxp,sc16is762" for NXP SC16IS762.
+- reg: I2C address of the SC16IS7xx device.
+- interrupt-parent: The phandle for the interrupt controller that
+ services interrupts for this IC.
+- interrupts: Should contain the UART interrupt
+- clocks: Reference to the IC source clock.
+
+Optional properties:
+- gpio-controller: Marks the device node as a GPIO controller.
+- #gpio-cells: Should be two. The first cell is the GPIO number and
+ the second cell is used to specify the GPIO polarity:
+ 0 = active high,
+ 1 = active low.
+
+Example:
+ sc16is750: sc16is750@51 {
+ compatible = "nxp,sc16is750";
+ reg = <0x51>;
+ clocks = <&clk20m>;
+ interrupt-parent = <&gpio3>;
+ interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
diff --git a/Documentation/devicetree/bindings/serial/of-serial.txt b/Documentation/devicetree/bindings/serial/of-serial.txt
index 1928a3e83cd0..77054772a8f4 100644
--- a/Documentation/devicetree/bindings/serial/of-serial.txt
+++ b/Documentation/devicetree/bindings/serial/of-serial.txt
@@ -37,6 +37,7 @@ Optional properties:
- auto-flow-control: one way to enable automatic flow control support. The
driver is allowed to detect support for the capability even without this
property.
+- has-hw-flow-control: the hardware has flow control capability.
Example:
diff --git a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
index 53e6c175db6c..64fd7dec1bbc 100644
--- a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
+++ b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
@@ -4,6 +4,7 @@ Required properties:
- compatible: Must contain one of the following:
+ - "renesas,scif-r8a7779" for R8A7779 (R-Car H1) SCIF compatible UART.
- "renesas,scif-r8a7790" for R8A7790 (R-Car H2) SCIF compatible UART.
- "renesas,scifa-r8a7790" for R8A7790 (R-Car H2) SCIFA compatible UART.
- "renesas,scifb-r8a7790" for R8A7790 (R-Car H2) SCIFB compatible UART.