On Mon, Sep 14, 2015 at 9:57 AM, Robert Nelson <[email protected]> wrote: > On Mon, Sep 14, 2015 at 9:51 AM, Robert Nelson <[email protected]> > wrote: >> On Mon, Sep 14, 2015 at 9:42 AM, Micka <[email protected]> wrote: >>> Hi, >>> >>> I'm trying to make rs485 working on the kernel 4.1 : >>> >>> &uart1 { >>> pinctrl-names = "default"; >>> pinctrl-0 = <&uart1_pins>; >>> status = "okay"; >>> rts-gpio = <&gpio0 27 GPIO_ACTIVE_HIGH>; >>> rs485-rts-active-high; >>> rs485-rts-delay = <1 1>; >>> linux,rs485-enabled-at-boot-time; >>> }; >>> >>> but in the boot log I have : >>> >>> [ 2.961866] 48022000.serial: ttyS1 at MMIO 0x48022000 (irq = 155, >>> base_baud = 3000000) is a 8250 >>> >>> does it mean that it's the driver 8250 that handle this uart ? >>> >>> If it's the case, that not good, because only the driver omap handle rs485. >>> >>> When I'm trying to configure the RS485 port, I have the errno = 25 = Not a >>> typewriter >>> >> >> switch back to the old omap_serial.c driver >> >> The new omap_8250 still needs to be extended to rs485.. > > btw see this thread: > > http://lists.infradead.org/pipermail/linux-arm-kernel/2014-April/250143.html > > Since you've done a lot with rs485 i think you can help extend > omap_8250 for rs485.. (the 8250 already has rs485 support, and with > the mctrl_gpio helpers it should be easy-ish..)
looks like infradead dropped the last message: http://www.spinics.net/lists/linux-omap/msg118854.html Regards, -- Robert Nelson https://rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
