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ARM: dts: am437x-gp-evm: Add uart0 pinctrl default and sleep states 

Currently uart0 uses pinctrl config set by bootloader so
create default state that can be restored after a suspend
event.

Also, modify uart0 pinctrl to include RTS and CTS pins as by
default these are not in a mode for optimal power savings.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Dave Gerlach 2018-11-07 10:34:18 +05:30 committed by Tony Lindgren
parent 7235ed186e
commit 74fe9bf45e
1 changed files with 20 additions and 10 deletions
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30
arch/arm/boot/dts/am437x-gp-evm.dts
View File

@ -517,15 +517,6 @@ AM4372_IOPAD(0x884, PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_csn2.gpio1_31 */
>;
};
uart0_pins_default: uart0_pins_default {
pinctrl-single,pins = <
AM4372_IOPAD(0x968, PIN_INPUT | MUX_MODE0) /* uart0_ctsn.uart0_ctsn */
AM4372_IOPAD(0x96C, PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* uart0_rtsn.uart0_rtsn */
AM4372_IOPAD(0x970, PIN_INPUT_PULLUP | MUX_MODE0) /* uart0_rxd.uart0_rxd */
AM4372_IOPAD(0x974, PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* uart0_txd.uart0_txd */
>;
};
beeper_pins: beeper_pins {
pinctrl-single,pins = <
AM4372_IOPAD(0x9e0, PIN_OUTPUT_PULLUP | MUX_MODE7) /* cam1_field.gpio4_12 */
@ -592,12 +583,31 @@ AM4372_IOPAD(0xaa4, PIN_INPUT_PULLDOWN)
AM4372_IOPAD(0xaa8, PIN_INPUT_PULLDOWN)
>;
};
uart0_pins_default: uart0_pins_default {
pinctrl-single,pins = <
AM4372_IOPAD(0x968, DS0_PULL_UP_DOWN_EN | INPUT_EN | MUX_MODE0) /* uart0_ctsn.uart0_ctsn */
AM4372_IOPAD(0x96C, DS0_PULL_UP_DOWN_EN | INPUT_EN | MUX_MODE0) /* uart0_rtsn.uart0_rtsn */
AM4372_IOPAD(0x970, PIN_INPUT_PULLUP | SLEWCTRL_FAST | DS0_PULL_UP_DOWN_EN | MUX_MODE0) /* uart0_rxd.uart0_rxd */
AM4372_IOPAD(0x974, PIN_INPUT | PULL_DISABLE | SLEWCTRL_FAST | DS0_PULL_UP_DOWN_EN | MUX_MODE0) /* uart0_txd.uart0_txd */
>;
};
uart0_pins_sleep: uart0_pins_sleep {
pinctrl-single,pins = <
AM4372_IOPAD(0x968, DS0_PULL_UP_DOWN_EN | INPUT_EN | MUX_MODE7) /* uart0_ctsn.uart0_ctsn */
AM4372_IOPAD(0x96C, DS0_PULL_UP_DOWN_EN | INPUT_EN | MUX_MODE7) /* uart0_rtsn.uart0_rtsn */
AM4372_IOPAD(0x970, PIN_INPUT_PULLUP | SLEWCTRL_FAST | DS0_PULL_UP_DOWN_EN | MUX_MODE0) /* uart0_rxd.uart0_rxd */
AM4372_IOPAD(0x974, PIN_INPUT_PULLDOWN | SLEWCTRL_FAST | DS0_PULL_UP_DOWN_EN | MUX_MODE0) /* uart0_txd.uart0_txd */
>;
};
};
&uart0 {
status = "okay";
pinctrl-names = "default";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&uart0_pins_default>;
pinctrl-1 = <&uart0_pins_sleep>;
};
&i2c0 {