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..) 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.
