From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A4D02C2BB9A for ; Tue, 15 Dec 2020 16:02:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 782E322509 for ; Tue, 15 Dec 2020 16:02:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730782AbgLOQCc (ORCPT ); Tue, 15 Dec 2020 11:02:32 -0500 Received: from mx2.suse.de ([195.135.220.15]:60924 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730664AbgLOP50 (ORCPT ); Tue, 15 Dec 2020 10:57:26 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 0C1D3AEC4; Tue, 15 Dec 2020 15:56:44 +0000 (UTC) From: Nicolas Saenz Julienne To: srinivas.kandagatla@linaro.org, Saenz Julienne , devicetree@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Rob Herring Cc: linux-kernel@vger.kernel.org, linux@armlinux.org.uk, catalin.marinas@arm.com, will@kernel.org, tim.gover@raspberrypi.com, phil@raspberrypi.com Subject: [PATCH 4/6] ARM: dts: bcm2711: Expose boot-loader configuration Date: Tue, 15 Dec 2020 16:56:24 +0100 Message-Id: <20201215155627.2513-5-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201215155627.2513-1-nsaenzjulienne@suse.de> References: <20201215155627.2513-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RPi4's co-processor will copy the board's bootloader configuration in memory. Expose it to user-space by using 'nvmem-rmem'. Signed-off-by: Nicolas Saenz Julienne --- arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts index c58e58e8ce39..261169eb5e3b 100644 --- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts +++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts @@ -26,6 +26,17 @@ aliases { ethernet0 = &genet; pcie0 = &pcie0; eeprom = &eeprom; + fw_config = &fw_config; + }; + + fw_config: fw-config { + compatible = "nvmem-rmem"; + memory-region = <&eeprom>; + /* + * Will be enabled by the bootloader if the reserved memory + * region is valid. + */ + status = "disabled"; }; leds { -- 2.29.2