[PATCH 3/3] ARM: dts: omap4-sdp: add dynamic pin states for uart3/4
From: tony@atomide.com (Tony Lindgren)
Date: 2013-07-17 15:32:58
Also in:
linux-devicetree, linux-omap, lkml
* Grygorii Strashko [off-list ref] [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.
quoted hunk ↗ jump to hunk
--- 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