Add support for configuring the drive strength and polarity on the
AST2500, and the pulse duration on both the AST2400 and AST2500.
Signed-off-by: NAndrew Jeffery <andrew@aj.id.au>
Tested-by: NMatt Spinler <mspinler@linux.vnet.ibm.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>