From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpout-04.galae.net (smtpout-04.galae.net [185.171.202.116]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 543DF3ED5B3 for ; Fri, 3 Jul 2026 14:37:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.171.202.116 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783089458; cv=none; b=o6NnN2zTZQurZlqncVdwpaObWsoOrnbek2dpk66vrQ29Ufb0eEHmjx0u1JSdY+w08lyd9gu747H0chQ3SZvVvKwM4JhFEQPrEgoeqKWvAF5dM42jO0BdSIFspIWg7PO0DFiLvS10ALhVje3SXlbZCqVu+5UxAsIyEUYekUTR4uM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783089458; c=relaxed/simple; bh=sDqM6J05m0JlTt87YFCL+e99a6pUfz55ki7f5AMUZbg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oYXNnlw9PJku3JKZGHM/IDhiCPc4YGXYP0eXWZTM0kTcbWeZujbASGtoDwdDx4fkca9EsnDMQtl/nkCtwggXtfQ9buHgQcv+D0A+ly6GBNhGxjBxvr3tA9ksYABJKAXs+vfM1gwUzhdbHFUN3Pz1IUIsnTwfAtDY2jMwZBnrQ5Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=vUEHy3Wf; arc=none smtp.client-ip=185.171.202.116 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="vUEHy3Wf" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-04.galae.net (Postfix) with ESMTPS id 247D0C49F60; Fri, 3 Jul 2026 14:37:42 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 4F6D860300; Fri, 3 Jul 2026 14:37:30 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id D8892104C9567; Fri, 3 Jul 2026 16:37:27 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1783089449; h=from:subject:date:message-id:to:cc:mime-version: content-transfer-encoding:in-reply-to:references; bh=eyxnSl+SAlk1ixTPdXrkFnr6s6HXnRifmslBmcN8Ynk=; b=vUEHy3Wf3mLQQLoTxlALSzYEY9BEtJkpk5mreSUm+kbB31fVt0AN/P4rv478x7lrq9iQIR obLQaS/Mk92doQ7JtJ3/xPUqfDH/RRrvybmb46zlggVx++7SDe5pnW51nH2xyucyfoBbla Okn+l9S+3FpMX+y08yEusEUFsgoWozHbJ3prTDtUZC5sqBN/2c5+0yzdRoocc0FE92Leak eYKd6p+B/6FLA9+eXmDavEyIp7H2rDhRtykgR9O9gx3+ihUMFrT7OVzbMF1jP4jYxbc8Em VbOqpI+a58JDiTeLNqk6ia9GGzF3g54EvK1DcSDFRsmbLIC2AE/7khLdtFkY1g== From: "Richard Genoud (TI)" To: Nishanth Menon , Vignesh Raghavendra Cc: Tero Kristo , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Udit Kumar , Abhash Kumar , Beleswar Padhi , Thomas Richard , Gregory CLEMENT , Thomas Petazzoni , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 1/6] dt-bindings: remoteproc: k3-r5f: Add Jacinto LPM memory region Date: Fri, 3 Jul 2026 16:37:12 +0200 Message-ID: <20260703143717.177362-2-richard.genoud@bootlin.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260703143717.177362-1-richard.genoud@bootlin.com> References: <20260703143717.177362-1-richard.genoud@bootlin.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Last-TLS-Session-Version: TLSv1.3 Declare a carveout memory region to store LPM metadata on Jacinto devices. For Jacinto devices, this memory region is needed for saving ATF context and the certificate information of ATF and OPTEE and DM image. This LPM metadata area is firewalled to be accessed only by TIFS. U-Boot R5 SPL/TIFS will use this area to save and restore: - ATF context - ATF certificate information - OPTEE certificate information - DM image (which has been copied in memory at boot time by U-Boot R5-SPL) At resume, U-Boot R5 SPL is executed and detects that the board is resuming (with a flag set in the PMIC), then it: - brings out of retention the DDR - retrieves the LPM memory region from DTS - authenticates certificates from LPM memory region and applies firewalls - asks TIFS to restore TFA and its own minimal context - starts TFA on remote proc - loads back DM image from memory and jumps to DM https://software-dl.ti.com/tisci/esd/latest/2_tisci_msgs/pm/lpm.html#lpm-msg-lpm-save-addr NB: This memory region is not part of DM memory (which is not retained at suspend) Signed-off-by: Richard Genoud (TI) --- .../bindings/remoteproc/ti,k3-r5f-rproc.yaml | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml index 14e6b2f817b3..af2acd429974 100644 --- a/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml +++ b/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml @@ -155,9 +155,10 @@ patternProperties: description: | phandle to the reserved memory nodes to be associated with the remoteproc device. There should be two reserved memory nodes defined - for the basic layout or 6 partitions for a detailed layout. The - reserved memory nodes should be carveout nodes, and should be defined - with a "no-map" property as per the bindings in + for the basic layout, three for the Jacinto layout or 6 partitions + for a detailed layout. The reserved memory nodes should be carveout + nodes, and should be defined with a "no-map" property as per the + bindings in Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt oneOf: - description: Basic layout @@ -174,6 +175,12 @@ patternProperties: - description: LPM metadata - description: LPM FS context data and reserved sections - description: DM RM/PM trace and firmware code/data + - description: Jacinto layout + items: + - description: region used for dynamic DMA allocations like vrings and + vring buffers + - description: region reserved for firmware image sections + - description: LPM metadata memory-region-names: description: | @@ -192,6 +199,11 @@ patternProperties: - const: lpm-metadata - const: lpm-context - const: dm-firmware + - description: Jacinto layout + items: + - const: dma + - const: firmware + - const: lpm-metadata # Optional properties: # -------------------- -- 2.47.3