From patchwork Wed Nov 29 15:31:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Richard X-Patchwork-Id: 748270 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="IAr/fyUw" Received: from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net [217.70.183.196]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DF4E8D6F; Wed, 29 Nov 2023 07:31:27 -0800 (PST) Received: by mail.gandi.net (Postfix) with ESMTPSA id 340CDE000A; Wed, 29 Nov 2023 15:31:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1701271886; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=n6Se7MgTLDlVPsmnv481wC76UKLsZL7lpNqEMlGZzy0=; b=IAr/fyUww18EgY4GKsHZMYeVTdK+cveCDjQkTAmKmYQJpAQ7V63VUI9w7uU7LnDdhJ++6s dswp7Ew+Zg2jg5CZ6Spu6PDvXR+wXPIizzILSrhOIIRTH348R5T8oNbB0qw9s1hJRTqFdV 2Fy+7NThE7UTzrSf0si2wpYZf8E9T0LpEFGHklB76X5DCOqK1OrBEAMdRHaIW5bIgqCctX oWBJ5zufnZ+o9VcXTxrrzf5pGoqf2q7bRqpUHmsMx/5lsiRj2JVK0yEGnZy+kq8fjMv+Pg i45A8YVchsERATCQniJ8Nm2udPMXvwziQDnejef9/H38zCbu3qbps28oEgypgA== From: Thomas Richard Date: Wed, 29 Nov 2023 16:31:21 +0100 Subject: [PATCH 5/5] arm64: dts: ti: k3-j7200: add reserved memory regions for lpm Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20231129-j7200-tisci-s2r-v1-5-c1d5964ed574@bootlin.com> References: <20231129-j7200-tisci-s2r-v1-0-c1d5964ed574@bootlin.com> In-Reply-To: <20231129-j7200-tisci-s2r-v1-0-c1d5964ed574@bootlin.com> To: Nishanth Menon , Tero Kristo , Santosh Shilimkar , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Vignesh Raghavendra Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com, gregory.clement@bootlin.com, u-kumar1@ti.com, Thomas Richard X-Mailer: b4 0.12.0 X-GND-Sasl: thomas.richard@bootlin.com Two memory regions are reserved for suspend to ram on j7200. One is dedicated to TF-A, it uses this region to save its context during suspend. The second region is for R5 SPL, which uses it for its stacks and to store some firmware images. These regions are reserved from the linux point of view to avoid any memory corruption. Signed-off-by: Thomas Richard --- arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi index 5a300d4c8ba0..dc8c9c3e8443 100644 --- a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi +++ b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi @@ -79,6 +79,16 @@ rtos_ipc_memory_region: ipc-memories@a4000000 { alignment = <0x1000>; no-map; }; + + lpm_r5_spl_ctx_ddr: lpm-memory@a5000000 { + reg = <0x00 0xa5000000 0x00 0x1000000>; + no-map; + }; + + lpm_bl31_ctx_ddr: lpm-memory@a6000000 { + reg = <0x00 0xa6000000 0x00 0x20000>; + no-map; + }; }; };