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    SubjectRe: [PATCH] ARM: OMAP: Add support for AM35xx UART4/ttyO3
    On 18/10/2011 20:47, Kyle Manna wrote:
    > Add hwmod support to enable access to UART4 of the AM35xx series of
    > chips. The UART4 device referenced from the TRM will show up as ttyO3.
    >
    > This was tested on an AM3505.
    >
    > Signed-off-by: Kyle Manna <kyle.manna@fuel7.com>
    > ---

    Hi Kyle,

    > arch/arm/mach-omap2/clock3xxx_data.c | 11 ++++++
    > arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 52 ++++++++++++++++++++++++++++
    > arch/arm/mach-omap2/prcm-common.h | 2 +
    > arch/arm/plat-omap/include/plat/irqs.h | 2 +-
    > arch/arm/plat-omap/include/plat/serial.h | 1 +
    > 5 files changed, 67 insertions(+), 1 deletions(-)

    Can I gently ask you which pinmux setup do you use to test your patch ?

    I am trying to make uart4 working on a am3517 with mainline kernel
    (3.3+, your patch is merged). However, on my board the uart4 pins are
    shared with the camera, and not with SD, as maybe is more common. I set
    the pinmux to switch the pins (gpio_95 / gpio_96 / gpio_97 /gpio_98) to
    the uart4, and ttyO3 is registered and available, and thanks your patch
    both clocks iclk and fclk are active. However, I cannot see activity on
    the tx line if I try to send some characters.

    Maybe do you use the same pinmux and am I forgetting something else ?

    Thanks,
    Stefano Babic

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