From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 15 Apr 2024 07:33:27 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1rwEy7-001ZHc-2E for lore@lore.pengutronix.de; Mon, 15 Apr 2024 07:33:27 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rwEy7-0003aq-4e for lore@pengutronix.de; Mon, 15 Apr 2024 07:33:27 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=V815GYLFtZ12iSEcpLUQW2zik/ImjLJfI58o0d45Luw=; b=ixKUTY4FJIprB9CXUr3aL7iM33 gVtVeX5/e81nIv6LyWQXhiyHS/YXn5Z0PC/uDMCMWjqeXK0dp97UDF0bW/50h9kauWY7ZFTGYKQcb 6u6yVvRSdk5unOnhQw6ejunwG6vmhWE+0xi5RmISvCKliXdV2QmBOQDvpfuiJEdzY5l2MxItDPe99 YgCd5tx9XVNEVAeDFqVML9G6z17z3TwVAv2Gmutju0mP5Umbjuh/PRiRU8EKJ8/VHnMBzxEfb4Zd4 j9/2FDES/9VRtc3jvqfOBwrcTdI0eQKepl8cNjbw0wWxn9FJ9EQu7rjTsEZr+CO8zlkvkFM9ryYYh eSWnF2Hw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rwExg-0000000711J-0ICf; Mon, 15 Apr 2024 05:33:00 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rwExc-0000000710b-2I9U for barebox@lists.infradead.org; Mon, 15 Apr 2024 05:32:57 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rwExb-00036d-13; Mon, 15 Apr 2024 07:32:55 +0200 Received: from [2a0a:edc0:0:1101:1d::54] (helo=dude05.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1rwExa-00CMkG-Ke; Mon, 15 Apr 2024 07:32:54 +0200 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1rwExa-001Y5a-1n; Mon, 15 Apr 2024 07:32:54 +0200 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Mon, 15 Apr 2024 07:32:53 +0200 Message-Id: <20240415053253.369354-1-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240414_223256_604884_179B76C4 X-CRM114-Status: UNSURE ( 8.64 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-6.1 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH] ARM: dts: rk356x: describe serial reboot mode X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) The PMUGRF (Power Management Unit - General Register File) of the RK3568 has a general purpose register checked by the BootROM on power-on to decide on whether to drop to recovery mode (rk-usb-loader/rkdeveloptool). Describe this in the device tree, so it's possible to use, e.g. global.system.reboot_mode.next=serial reset to force falling into serial (USB) boot mode. Signed-off-by: Ahmad Fatoum --- arch/arm/dts/rk356x.dtsi | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/arm/dts/rk356x.dtsi b/arch/arm/dts/rk356x.dtsi index 923e18e7ccda..7fd5f72a5918 100644 --- a/arch/arm/dts/rk356x.dtsi +++ b/arch/arm/dts/rk356x.dtsi @@ -1,6 +1,12 @@ // SPDX-License-Identifier: (GPL-2.0+ OR MIT) +#include + / { + aliases { + pmugrf.reboot_mode = &reboot_mode_pmugrf; + }; + chosen { barebox,bootsource-mmc0 = &sdhci; barebox,bootsource-mmc1 = &sdmmc0; @@ -31,3 +37,12 @@ rng: rng@fe388000 { resets = <&cru SRST_TRNG_NS>; }; }; + +&pmugrf { + reboot_mode_pmugrf: reboot-mode { + compatible = "syscon-reboot-mode"; + offset = <0x200>; + mode-normal = ; + mode-serial = <0xef08a53c>; /* rk-usb-loader */ + }; +}; -- 2.39.2