From nobody Tue Dec 16 19:43:31 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC333C6FA82 for ; Tue, 27 Sep 2022 11:21:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232133AbiI0LVt (ORCPT ); Tue, 27 Sep 2022 07:21:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230388AbiI0LUb (ORCPT ); Tue, 27 Sep 2022 07:20:31 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 649DC100; Tue, 27 Sep 2022 04:20:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1664277629; x=1695813629; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=OsVWWpeogVW5hrrvPLEhshKbrhrTon0FHGytPjPWSr8=; b=dEcxhhbvBTcxgWbxlXb5mZJQCDGqrIpXr6zgUnRHnYSMXdq965Ty2h7k mnzLDk5iHa/YDHa5GLm8neUI2Z/YiI7jwieMo33nzfK9z/YtlYfrG7efg jB4vnSuQMbKtHpqGsmL675zNQRYFXbEbHs94Rzh1/BW8oVsCzDbD/tK0r DMRQ3nZqJnPwN1XJwXhTu9uvR0FMS4uC+onKHwOAgQzC4WRw4c4/JWQIq csOY5qNED+EH1eUG3CNAUsQAzLHJEiC8S310N0KEJitlFiKaHwhbBlVFQ SS0WG5bGShoyW5lwEm8gzDPxWzq+DXDSYDBdqNN03xke0yfXSRm/R2ee0 w==; X-IronPort-AV: E=Sophos;i="5.93,349,1654585200"; d="scan'208";a="192655951" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 27 Sep 2022 04:20:28 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Tue, 27 Sep 2022 04:20:28 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Tue, 27 Sep 2022 04:20:26 -0700 From: Conor Dooley To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Daire McNamara , Shravan Chippa CC: Paul Walmsley , Palmer Dabbelt , Albert Ou , Cyril Jean , Lewis Hanly , Vattipalli Praveen , Wolfgang Grandegger , Hugh Breslin , , , Subject: [PATCH v6 11/11] riscv: dts: microchip: update memory configuration for v2022.10 Date: Tue, 27 Sep 2022 12:19:23 +0100 Message-ID: <20220927111922.3602838-12-conor.dooley@microchip.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220927111922.3602838-1-conor.dooley@microchip.com> References: <20220927111922.3602838-1-conor.dooley@microchip.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" In the v2022.10 reference design, the seg registers are going to be changed, resulting in a required change to the memory map in Linux. A small 4M reservation is made at the end of 32-bit DDR to provide some memory for the HSS to use, so that it can cache its payload.bin between reboots of a specific context. Signed-off-by: Conor Dooley --- arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts b/arch/riscv= /boot/dts/microchip/mpfs-icicle-kit.dts index 42d350fe6c6b..31f88cb4d5e5 100644 --- a/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts +++ b/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts @@ -33,15 +33,26 @@ cpus { =20 ddrc_cache_lo: memory@80000000 { device_type =3D "memory"; - reg =3D <0x0 0x80000000 0x0 0x2e000000>; + reg =3D <0x0 0x80000000 0x0 0x40000000>; status =3D "okay"; }; =20 ddrc_cache_hi: memory@1000000000 { device_type =3D "memory"; - reg =3D <0x10 0x0 0x0 0x40000000>; + reg =3D <0x10 0x40000000 0x0 0x40000000>; status =3D "okay"; }; + + reserved-memory { + #address-cells =3D <2>; + #size-cells =3D <2>; + ranges; + + hss_payload: region@BFC00000 { + reg =3D <0x0 0xBFC00000 0x0 0x400000>; + no-map; + }; + }; }; =20 &core_pwm0 { --=20 2.37.3