From: Kendall Willis <k-willis@ti.com>
To: <nm@ti.com>, <vigneshr@ti.com>, <kristo@kernel.org>,
<robh@kernel.org>, <krzk+dt@kernel.org>, <conor+dt@kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <d-gole@ti.com>, <vishalm@ti.com>, <sebin.francis@ti.com>,
<msp@baylibre.com>, <khilman@baylibre.com>, <a-kaur@ti.com>,
<k-willis@ti.com>
Subject: [PATCH 1/3] arm64: dts: ti: k3-am62x-sk-common: Enable Main UART wakeup
Date: Thu, 4 Sep 2025 16:28:25 -0500 [thread overview]
Message-ID: <20250904212827.3730314-2-k-willis@ti.com> (raw)
In-Reply-To: <20250904212827.3730314-1-k-willis@ti.com>
The Main UART can resume from suspend to RAM states when PIN_WKUP_EN
is enabled. Add the necessary pins needed to wakeup the system. Add the
system idle states that the Main UART can wakeup the system from.
Signed-off-by: Kendall Willis <k-willis@ti.com>
---
.../arm64/boot/dts/ti/k3-am62x-sk-common.dtsi | 24 +++++++++++++++----
1 file changed, 20 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
index 13e1d36123d51..72801cf890d20 100644
--- a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
@@ -163,14 +163,26 @@ &phy_gmii_sel {
&main_pmx0 {
/* First pad number is ALW package and second is AMC package */
- main_uart0_pins_default: main-uart0-default-pins {
+ main_uart0_tx_pins_default: main-uart0-tx-default-pins {
bootph-all;
pinctrl-single,pins = <
- AM62X_IOPAD(0x1c8, PIN_INPUT, 0) /* (D14/A13) UART0_RXD */
AM62X_IOPAD(0x1cc, PIN_OUTPUT, 0) /* (E14/E11) UART0_TXD */
>;
};
+ main_uart0_rx_pins_default: main-uart0-rx-default-pins {
+ bootph-all;
+ pinctrl-single,pins = <
+ AM62X_IOPAD(0x1c8, PIN_INPUT, 0) /* (D14/A13) UART0_RXD */
+ >;
+ };
+
+ main_uart0_rx_pins_wakeup: main-uart0-rx-wakeup-pins {
+ pinctrl-single,pins = <
+ AM62X_IOPAD(0x1c8, PIN_INPUT | PIN_WKUP_EN, 0) /* (D14/A13) UART0_RXD */
+ >;
+ };
+
main_uart1_pins_default: main-uart1-default-pins {
bootph-pre-ram;
pinctrl-single,pins = <
@@ -342,8 +354,12 @@ &wkup_uart0 {
&main_uart0 {
bootph-all;
status = "okay";
- pinctrl-names = "default";
- pinctrl-0 = <&main_uart0_pins_default>;
+ pinctrl-names = "default", "wakeup";
+ pinctrl-0 = <&main_uart0_tx_pins_default>, <&main_uart0_rx_pins_default>;
+ pinctrl-1 = <&main_uart0_tx_pins_default>, <&main_uart0_rx_pins_wakeup>;
+ wakeup-source = <&system_deep_sleep>,
+ <&system_mcu_only>,
+ <&system_standby>;
};
&main_uart1 {
--
2.34.1
next prev parent reply other threads:[~2025-09-04 21:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-04 21:28 [PATCH 0/3] arm64: dts: ti: k3-am62: Support " Kendall Willis
2025-09-04 21:28 ` Kendall Willis [this message]
2025-09-09 8:35 ` [PATCH 1/3] arm64: dts: ti: k3-am62x-sk-common: Enable " Markus Schneider-Pargmann
2025-09-09 8:37 ` Markus Schneider-Pargmann
2025-09-09 19:03 ` Kendall Willis
2025-09-04 21:28 ` [PATCH 2/3] arm64: dts: ti: k3-am62a7-sk: " Kendall Willis
2025-09-04 21:28 ` [PATCH 3/3] arm64: dts: ti: k3-am62p5-sk: " Kendall Willis
2025-09-05 2:32 ` [PATCH 0/3] arm64: dts: ti: k3-am62: Support " Rob Herring (Arm)
2025-09-09 22:41 ` Kendall Willis
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