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    SubjectRe: [PATCH 3/3] ARM: dts: omap4-sdp: add dynamic pin states for uart3/4
    * Grygorii Strashko <grygorii.strashko@ti.com> [130717 04:49]:
    > Add dynamic "active"/"idle" pin states for uart3/4 which will be applied
    > when uart3/4 state is switched from active to idle and back by Runtime
    > PM or during system suspend.

    This is good for testing code, but should not be merged because
    omap4 has the iopad wake-ups available for uarts. So those can
    be always enabled.

    > --- a/arch/arm/boot/dts/omap4-sdp.dts
    > +++ b/arch/arm/boot/dts/omap4-sdp.dts
    > @@ -181,18 +181,40 @@
    > pinctrl-single,pins = <
    > 0x100 (PIN_INPUT_PULLUP | MUX_MODE0) /* uart3_cts_rctx.uart3_cts_rctx */
    > 0x102 (PIN_OUTPUT | MUX_MODE0) /* uart3_rts_sd.uart3_rts_sd */
    > - 0x104 (PIN_INPUT | MUX_MODE0) /* uart3_rx_irrx.uart3_rx_irrx */
    > 0x106 (PIN_OUTPUT | MUX_MODE0) /* uart3_tx_irtx.uart3_tx_irtx */
    > >;
    > };

    This just need to become:
    pinctrl-single,pins = <
    ...
    0x104 (WAKEUP_EN | PIN_INPUT_MUX_MODE0) /* uart3_rx_irrx.uart3_rx_irrx */
    ...
    >;
    interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
    };

    And so on. For am33xx you need to remux things to GPIO for the wake-up
    events, so you should maybe test on that instead.

    Regards,

    Tony


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