diff options
| author | Dave Gerlach <d-gerlach@ti.com> | 2018-11-07 10:34:18 +0530 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2018-11-19 10:32:33 -0800 |
| commit | 74fe9bf45e71a3122831106a19398dc96443181a (patch) | |
| tree | ffa873acde8fcd37bb352b933039e73e45acb98d /arch/arm/boot/dts/am437x-gp-evm.dts | |
| parent | 7235ed186e12d2e57de969cda55db8a620b0bcbf (diff) | |
| download | lwn-74fe9bf45e71a3122831106a19398dc96443181a.tar.gz lwn-74fe9bf45e71a3122831106a19398dc96443181a.zip | |
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>
Diffstat (limited to 'arch/arm/boot/dts/am437x-gp-evm.dts')
| -rw-r--r-- | arch/arm/boot/dts/am437x-gp-evm.dts | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts index 9c5e969d05e6..e52b0132d43c 100644 --- a/arch/arm/boot/dts/am437x-gp-evm.dts +++ b/arch/arm/boot/dts/am437x-gp-evm.dts @@ -517,15 +517,6 @@ >; }; - 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(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 { |