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X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 31 Dec 2025 02:38:37.2246 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 665e0f42-1d00-47c0-74f1-08de4815b34f X-MS-Exchange-CrossTenant-Id: e5b49634-450b-4709-8abb-1e2b19b982b7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.21.194];Helo=[flwvzet200.ext.ti.com] X-MS-Exchange-CrossTenant-AuthSource: CH3PEPF00000013.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA3PR10MB8044 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251230_183843_833035_609EDB92 X-CRM114-Status: GOOD ( 10.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 --- arch/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 50ed859ae06c47af38b11753d909a91485d438e5..e84356a971ee5a2c1c799eb5a1830cc8efc9adf7 100644 --- a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi @@ -143,14 +143,26 @@ &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 = < @@ -322,8 +334,12 @@ &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