{"id":2230930,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2230930/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/patch/20260430084414.1354490-4-richard.genoud@bootlin.com/","project":{"id":18,"url":"http://patchwork.ozlabs.org/api/1.2/projects/18/?format=json","name":"U-Boot","link_name":"uboot","list_id":"u-boot.lists.denx.de","list_email":"u-boot@lists.denx.de","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260430084414.1354490-4-richard.genoud@bootlin.com>","list_archive_url":null,"date":"2026-04-30T08:43:56","name":"[03/20] board: ti: j721e: Add resume detection for J721e/J7200","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"d5c66ee1f6c74df7146b2fad16fd622cd312aa14","submitter":{"id":88519,"url":"http://patchwork.ozlabs.org/api/1.2/people/88519/?format=json","name":"Richard Genoud (TI)","email":"richard.genoud@bootlin.com"},"delegate":{"id":3651,"url":"http://patchwork.ozlabs.org/api/1.2/users/3651/?format=json","username":"trini","first_name":"Tom","last_name":"Rini","email":"trini@ti.com"},"mbox":"http://patchwork.ozlabs.org/project/uboot/patch/20260430084414.1354490-4-richard.genoud@bootlin.com/mbox/","series":[{"id":502237,"url":"http://patchwork.ozlabs.org/api/1.2/series/502237/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/list/?series=502237","date":"2026-04-30T08:43:53","name":"Introduce resume for J7xx SoCs","version":1,"mbox":"http://patchwork.ozlabs.org/series/502237/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2230930/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2230930/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=bootlin.com header.i=@bootlin.com header.a=rsa-sha256\n header.s=dkim header.b=Ck8TQvM+;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; 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a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim;\n t=1777538673; h=from:subject:date:message-id:to:cc:mime-version:\n content-transfer-encoding:in-reply-to:references;\n bh=sk7iOm9SBxYXoB7YlV4H5UFOinc75XKNo0qOlhBVsNo=;\n b=Ck8TQvM+7MlMErtz0nPBGfjrDBl5tCH8v9ixaznWBrCv7kbEITTuQk/uGXNuFtuuUTlB+c\n m766cl3IAy9duMobJ4yiqkW+jSmgSZOAGpHSigE8xpQ38Zdwxn9FOx0D7aLgqVgwjeBnBa\n 8igcIlSfvSoQ9nvySYIDwmoBL7nB7Ux0N0z0sxgnSDKalvMp3C98JBSfIyl5EKyO31i9sj\n GAEF2kSa46BSAic9hYLB87ZyfxzCzHD08x6g4j1k08QAhFs0ClR/L3AvJp9SzxQGRAo8Fd\n qAQXrWME8Yn/Zv/nQZ4ymjWbcKA/Xw1colUgXTsrCXofRtkzBvzcu6AKS1qhzw==","From":"\"Richard Genoud (TI)\" ","To":"Tom Rini , Manorit Chawdhry ,\n Apurva Nandan , \"Andrew F . Davis\" ,\n Vignesh Raghavendra , Bryan Brattlof ,\n Vaishnav Achath , Jayesh Choudhary ,\n Simon Glass , Alper Nebi Yasak ","Cc":"Markus Schneider-Pargmann ,\n Udit Kumar ,\n Abhash Kumar ,\n Thomas Richard ,\n Gregory CLEMENT ,\n Thomas Petazzoni ,\n Richard Genoud , u-boot@lists.denx.de","Subject":"[PATCH 03/20] board: ti: j721e: Add resume detection for J721e/J7200","Date":"Thu, 30 Apr 2026 10:43:56 +0200","Message-ID":"<20260430084414.1354490-4-richard.genoud@bootlin.com>","X-Mailer":"git-send-email 2.47.3","In-Reply-To":"<20260430084414.1354490-1-richard.genoud@bootlin.com>","References":"<20260430084414.1354490-1-richard.genoud@bootlin.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-Last-TLS-Session-Version":"TLSv1.3","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.39","Precedence":"list","List-Id":"U-Boot discussion ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" ","X-Virus-Scanned":"clamav-milter 0.103.8 at phobos.denx.de","X-Virus-Status":"Clean"},"content":"From: \"Thomas Richard (TI)\" \n\nAdd the capability to detect a resume. This overrides the weak\nfunction j7xx_board_is_resuming(void).\nTo detect the resume, SPL searches a magic value (0xBA) in a register\nof PMICA.\nThis value is set by DM-Firmware during the suspend sequence.\n\nSigned-off-by: Thomas Richard (TI) \nCo-developed-by: Gregory CLEMENT (TI) \nSigned-off-by: Gregory CLEMENT (TI) \nCo-developed-by: Richard Genoud (TI) \nSigned-off-by: Richard Genoud (TI) \n---\n board/ti/common/k3-lpm.h | 17 +++++++++++++++++\n board/ti/j721e/evm.c | 37 +++++++++++++++++++++++++++++++++++++\n 2 files changed, 54 insertions(+)\n create mode 100644 board/ti/common/k3-lpm.h","diff":"diff --git a/board/ti/common/k3-lpm.h b/board/ti/common/k3-lpm.h\nnew file mode 100644\nindex 000000000000..a2141a0c25a8\n--- /dev/null\n+++ b/board/ti/common/k3-lpm.h\n@@ -0,0 +1,17 @@\n+/* SPDX-License-Identifier: GPL-2.0+ */\n+/*\n+ * Copyright (C) 2026, Texas Instruments Incorporated - https://www.ti.com/\n+ * Copyright (C) 2026, Bootlin\n+ */\n+\n+#ifndef __K3_LPM_H\n+#define __K3_LPM_H\n+\n+/* Magic value in PMIC register to indicate the suspend state (SOC_OFF) */\n+#define K3_LPM_MAGIC_SUSPEND 0xba\n+\n+/* PMIC register where the magic value resides */\n+#define K3_LPM_SCRATCH_PAD_REG 0xcb\n+\n+#endif /* __K3_LPM_H */\n+\ndiff --git a/board/ti/j721e/evm.c b/board/ti/j721e/evm.c\nindex 881392bd963a..67ff13828514 100644\n--- a/board/ti/j721e/evm.c\n+++ b/board/ti/j721e/evm.c\n@@ -17,9 +17,11 @@\n #include \n #include \n #include \n+#include \n \n #include \"../common/board_detect.h\"\n #include \"../common/fdt_ops.h\"\n+#include \"../common/k3-lpm.h\"\n \n #define board_is_j721e_som()\t(board_ti_k3_is(\"J721EX-PM1-SOM\") || \\\n \t\t\t\t board_ti_k3_is(\"J721EX-PM2-SOM\"))\n@@ -469,6 +471,41 @@ err_free_gpio:\n \t}\n }\n \n+#if (IS_ENABLED(CONFIG_SPL_BUILD) && IS_ENABLED(CONFIG_TARGET_J7200_R5_EVM))\n+\n+bool j7xx_board_is_resuming(void)\n+{\n+\tstruct udevice *pmica;\n+\tint ret;\n+\n+\tif (gd_k3_resuming() != K3_RESUME_STATE_UNKNOWN)\n+\t\tgoto end;\n+\n+\tret = uclass_get_device_by_name(UCLASS_PMIC,\n+\t\t\t\t\t\"pmic@48\", &pmica);\n+\tif (ret) {\n+\t\tprintf(\"Getting PMICA init failed: %d\\n\", ret);\n+\t\tgoto end;\n+\t}\n+\tdebug(\"%s: PMICA is detected (%s)\\n\", __func__, pmica->name);\n+\n+\tif (pmic_reg_read(pmica, K3_LPM_SCRATCH_PAD_REG) == K3_LPM_MAGIC_SUSPEND) {\n+\t\tdebug(\"%s: board is resuming\\n\", __func__);\n+\t\tgd_set_k3_resuming(K3_RESUME_STATE_RESUMING);\n+\n+\t\t/* clean magic suspend */\n+\t\tif (pmic_reg_write(pmica, K3_LPM_SCRATCH_PAD_REG, 0))\n+\t\t\tprintf(\"Failed to clean magic value for suspend detection in PMICA\\n\");\n+\t} else {\n+\t\tdebug(\"%s: board is booting (no resume detected)\\n\", __func__);\n+\t\tgd_set_k3_resuming(K3_RESUME_STATE_BOOTING);\n+\t}\n+end:\n+\treturn gd_k3_resuming() == K3_RESUME_STATE_RESUMING;\n+}\n+\n+#endif /* CONFIG_SPL_BUILD && CONFIG_TARGET_J7200_R5_EVM */\n+\n void spl_board_init(void)\n {\n \tstruct udevice *dev;\n","prefixes":["03/20"]}