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serial: mxs-auart: add Alphascale ASM9260 support

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Alphascale ASM9260 uart IP has some common registers with
Freescale STMP37XX. This patch provide changes which
allow to reuse mxs-auart.c code for ASM9260.

Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oleksij Rempel 2016-03-16 14:05:52 +01:00 committed by Greg Kroah-Hartman
parent e69ef01ff0
commit 254da0d753
3 changed files with 531 additions and 129 deletions
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14
Documentation/devicetree/bindings/serial/fsl-mxs-auart.txt
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@ -1,8 +1,10 @@
* Freescale MXS Application UART (AUART)
Required properties:
- compatible : Should be "fsl,<soc>-auart". The supported SoCs include
imx23 and imx28.
Required properties for all SoCs:
- compatible : Should be one of fallowing variants:
"fsl,imx23-auart" - Freescale i.MX23
"fsl,imx28-auart" - Freescale i.MX28
"alphascale,asm9260-auart" - Alphascale ASM9260
- reg : Address and length of the register set for the device
- interrupts : Should contain the auart interrupt numbers
- dmas: DMA specifier, consisting of a phandle to DMA controller node
@ -10,6 +12,12 @@ Required properties:
Refer to dma.txt and fsl-mxs-dma.txt for details.
- dma-names: "rx" for RX channel, "tx" for TX channel.
Required properties for "alphascale,asm9260-auart":
- clocks : the clocks feeding the watchdog timer. See clock-bindings.txt
- clock-names : should be set to
"mod" - source for tick counter.
"ahb" - ahb gate.
Optional properties:
- fsl,uart-has-rtscts : Indicate the UART has RTS and CTS lines
for hardware flow control,

5
drivers/tty/serial/Kconfig
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@ -1384,11 +1384,12 @@ config SERIAL_PCH_UART_CONSOLE
config SERIAL_MXS_AUART
tristate "MXS AUART support"
depends on HAS_DMA
depends on ARCH_MXS || COMPILE_TEST
depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
select SERIAL_CORE
select SERIAL_MCTRL_GPIO if GPIOLIB
help
This driver supports the MXS Application UART (AUART) port.
This driver supports the MXS and Alphascale ASM9260 Application
UART (AUART) port.
config SERIAL_MXS_AUART_CONSOLE
bool "MXS AUART console support"

641
drivers/tty/serial/mxs-auart.c
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