From 7d4008ebb1c971ce4baf57e45993690b0fa6d9f9 Mon Sep 17 00:00:00 2001 From: Jamie Iles Date: Fri, 26 Aug 2011 19:04:50 +0100 Subject: tty: add a DesignWare 8250 driver The Synopsys DesignWare 8250 is an 8250 that has an extra interrupt that gets raised when writing to the LCR when busy. To handle this we need special serial_out, serial_in and handle_irq methods. Add a new platform driver that uses these accessors. Cc: Alan Cox Cc: Arnd Bergmann Signed-off-by: Jamie Iles Signed-off-by: Greg Kroah-Hartman --- .../bindings/tty/serial/snps-dw-apb-uart.txt | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 Documentation/devicetree/bindings/tty/serial/snps-dw-apb-uart.txt (limited to 'Documentation/devicetree/bindings/tty') diff --git a/Documentation/devicetree/bindings/tty/serial/snps-dw-apb-uart.txt b/Documentation/devicetree/bindings/tty/serial/snps-dw-apb-uart.txt new file mode 100644 index 000000000000..f13f1c5be91c --- /dev/null +++ b/Documentation/devicetree/bindings/tty/serial/snps-dw-apb-uart.txt @@ -0,0 +1,25 @@ +* Synopsys DesignWare ABP UART + +Required properties: +- compatible : "snps,dw-apb-uart" +- reg : offset and length of the register set for the device. +- interrupts : should contain uart interrupt. +- clock-frequency : the input clock frequency for the UART. + +Optional properties: +- reg-shift : quantity to shift the register offsets by. If this property is + not present then the register offsets are not shifted. +- reg-io-width : the size (in bytes) of the IO accesses that should be + performed on the device. If this property is not present then single byte + accesses are used. + +Example: + + uart@80230000 { + compatible = "snps,dw-apb-uart"; + reg = <0x80230000 0x100>; + clock-frequency = <3686400>; + interrupts = <10>; + reg-shift = <2>; + reg-io-width = <4>; + }; -- cgit v1.2.3