Messages in this thread | | | Date | Thu, 22 Mar 2012 18:11:59 +0100 | From | Stefano Babic <> | Subject | Re: [PATCH] ARM: OMAP: Add support for AM35xx UART4/ttyO3 |
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On 22/03/2012 18:00, Kyle Manna wrote:
> > My pin mux is configured in u-boot and is as follows: > > /* CCDC_FIELD: gpio_95, uP-TXD4 */ \ > MUX_VAL(CP(CCDC_FIELD), (IDIS | PTD | DIS | M2)) \ > /* CCDC_HD: gpio_96, uP-RTS4# */ \ > MUX_VAL(CP(CCDC_HD), (IDIS | PTD | DIS | M2)) \ > /* CCDC_VD: gpio_97, uP-CTS4# */ \ > MUX_VAL(CP(CCDC_VD), (IEN | PTD | EN | M2)) \ > /* CCDC_WEN: gpio_98, uP-RXD4 */ \ > MUX_VAL(CP(CCDC_WEN), (IEN | PTD | DIS | M2)) \ >
Well, we are using the same pins !
> I've just validated my AM3505 board does in fact toggle the TX line and > writes valid data. The running kernel is based on a linux-omap-3.1 and > was the source for that patch. > > Since it sounds like you have the same pinmux, perhaps something changed > elsewhere in the kernel?
Maybe, but registers looks good - and tracing the serial driver I have not seen anything wrong.
> Have you tried validating that your hardware > can toggle the pin as a GPIO first to eliminate any possibility of shorts?
I will do it now.
Thanks, Stefano
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