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GET /api/patches/2223046/?format=api
{ "id": 2223046, "url": "http://patchwork.ozlabs.org/api/patches/2223046/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/20260414-fix_usb_adc_meausurement-v1-1-8cdbd4c10dd8@foss.st.com/", "project": { "id": 18, "url": "http://patchwork.ozlabs.org/api/projects/18/?format=api", "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": "<20260414-fix_usb_adc_meausurement-v1-1-8cdbd4c10dd8@foss.st.com>", "list_archive_url": null, "date": "2026-04-14T09:06:50", "name": "board: stm32pm1: Fix board_check_usb_power()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "09404765bd68bf13fe5d3f812a85eed3318dc1a7", "submitter": { "id": 80709, "url": "http://patchwork.ozlabs.org/api/people/80709/?format=api", "name": "Patrice Chotard", "email": "patrice.chotard@foss.st.com" }, "delegate": { "id": 70413, "url": "http://patchwork.ozlabs.org/api/users/70413/?format=api", "username": "pchotard", "first_name": "Patrice", "last_name": "Chotard", "email": "patrice.chotard@st.com" }, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/20260414-fix_usb_adc_meausurement-v1-1-8cdbd4c10dd8@foss.st.com/mbox/", "series": [ { "id": 499803, "url": "http://patchwork.ozlabs.org/api/series/499803/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/list/?series=499803", "date": "2026-04-14T09:06:50", "name": "board: stm32pm1: Fix board_check_usb_power()", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499803/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2223046/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2223046/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<u-boot-bounces@lists.denx.de>", "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=foss.st.com header.i=@foss.st.com header.a=rsa-sha256\n header.s=selector2 header.b=ZUj9GJh2;\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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Ip=[164.130.1.59];\n Helo=[smtpO365.st.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n AM3PEPF00009B9E.eurprd04.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "PAVPR10MB6791", "X-BeenThere": "u-boot@lists.denx.de", "X-Mailman-Version": "2.1.39", "Precedence": "list", "List-Id": "U-Boot discussion <u-boot.lists.denx.de>", "List-Unsubscribe": "<https://lists.denx.de/options/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=unsubscribe>", "List-Archive": "<https://lists.denx.de/pipermail/u-boot/>", "List-Post": "<mailto:u-boot@lists.denx.de>", "List-Help": "<mailto:u-boot-request@lists.denx.de?subject=help>", "List-Subscribe": "<https://lists.denx.de/listinfo/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=subscribe>", "Errors-To": "u-boot-bounces@lists.denx.de", "Sender": "\"U-Boot\" <u-boot-bounces@lists.denx.de>", "X-Virus-Scanned": "clamav-milter 0.103.8 at phobos.denx.de", "X-Virus-Status": "Clean" }, "content": "Depending of plugged power source (computer, wall charger, ...) it can\nhappen that we got the following message:\n\n\"****************************************************\"\n\"* USB TYPE-C charger not compliant with *\"\n\"* specification *\"\n\"****************************************************\"\n\" \"\n\"### ERROR ### Please RESET the board ### \"\n\nThis issue has been detected on STM32MP135f-DK board.\n\nIt's due to max_uV and min_uV value are initialized at beginning of\nboard_check_usb_power() and can then be used for the 2 iteration of\nadc_measurement().\nmax_uV/min_uV values issued of the first adc_measurement() iteration\nare used as input of the second adc_measurement() iteration, which\ncan lead to incoherent pair of min_uV/max_uV values.\n\nTo ensure that adc_measurement() returns coherent value for max_uV and\nmin_uV, initialize max_uV and min_uV at each loop start.\n\nSigned-off-by: Patrice Chotard <patrice.chotard@foss.st.com>\n---\n board/st/stm32mp1/stm32mp1.c | 7 +++++--\n 1 file changed, 5 insertions(+), 2 deletions(-)\n\n\n---\nbase-commit: 88dc2788777babfd6322fa655df549a019aa1e69\nchange-id: 20260414-fix_usb_adc_meausurement-e4e9b7988ccb\n\nBest regards,", "diff": "diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c\nindex 5f7c6822116..88ede4e3910 100644\n--- a/board/st/stm32mp1/stm32mp1.c\n+++ b/board/st/stm32mp1/stm32mp1.c\n@@ -326,8 +326,8 @@ static int adc_measurement(ofnode node, int adc_count, int *min_uV, int *max_uV)\n static int board_check_usb_power(void)\n {\n \tofnode node;\n-\tint max_uV = 0;\n-\tint min_uV = USB_START_HIGH_THRESHOLD_UV;\n+\tint max_uV;\n+\tint min_uV;\n \tint adc_count, ret;\n \tu32 nb_blink;\n \tu8 i;\n@@ -358,6 +358,9 @@ static int board_check_usb_power(void)\n \n \t/* perform maximum of 2 ADC measurements to detect power supply current */\n \tfor (i = 0; i < 2; i++) {\n+\t\tmax_uV = 0;\n+\t\tmin_uV = USB_START_HIGH_THRESHOLD_UV;\n+\n \t\tret = adc_measurement(node, adc_count, &min_uV, &max_uV);\n \t\tif (ret)\n \t\t\treturn ret;\n", "prefixes": [] }