From: Keerthy <j-keerthy@ti.com>
To: tony@atomide.com
Cc: robh+dt@kernel.org, mark.rutland@arm.com,
linux-omap@vger.kernel.org, devicetree@vger.kernel.org,
d-gerlach@ti.com, t-kristo@ti.com, j-keerthy@ti.com
Subject: [PATCH 4/6] ARM: dts: am437x-gp-evm: Add uart0 pinctrl default and sleep states
Date: Wed, 7 Nov 2018 10:34:18 +0530 [thread overview]
Message-ID: <1541567060-5671-5-git-send-email-j-keerthy@ti.com> (raw)
In-Reply-To: <1541567060-5671-1-git-send-email-j-keerthy@ti.com>
From: Dave Gerlach <d-gerlach@ti.com>
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>
---
arch/arm/boot/dts/am437x-gp-evm.dts | 30 ++++++++++++++++++++----------
1 file 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 9c5e969..e52b013 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 {
--
1.9.1
next prev parent reply other threads:[~2018-11-07 5:04 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-07 5:04 [PATCH 0/6] ARM: dts: am437x-gp-evm: Add pinctrl nodes Keerthy
2018-11-07 5:04 ` [PATCH 1/6] ARM: dts: am437x-gp-evm: Add state for ddr3 vtt toggle pin Keerthy
2018-11-07 5:04 ` [PATCH 2/6] ARM: dts: am437x-gp-evm: Add pinctrl for unused_pins Keerthy
2018-11-07 5:04 ` [PATCH 3/6] ARM: dts: am437x-gp-evm: Add pinctrl for debugss pins Keerthy
2018-11-07 5:04 ` Keerthy [this message]
2018-11-07 5:04 ` [PATCH 5/6] ARM: dts: am437x-gp-evm: Add pinmux for gpio0 wake Keerthy
2018-11-07 5:04 ` [PATCH 6/6] ARM: dts: am437x-gp-evm: Add sleep state for beeper pins Keerthy
2018-11-19 18:33 ` [PATCH 0/6] ARM: dts: am437x-gp-evm: Add pinctrl nodes Tony Lindgren
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