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[147.11.124.94]) by smtp.gmail.com with ESMTPSA id o10sm11618094ili.82.2020.12.14.01.19.07 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 14 Dec 2020 01:19:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=KqZyQlxZep5FPbrFL3HJFB2aFUNB9J2hzOC5R8+/04Q=; b=hE52Ig2YALU6sE084rgm03nCtX+rpAA7qE3pOpNCLedkSmD38/ABviCQYW/8LM7FVm zsTO5FACgobG+FJv9+WvI+0r9SWogWvoiBrpvSCcS6IA6qy5UtqFPIpM/pus03Pq5wmi rHd0n/FSL17n97bOzXc4pyMnjlRS0Pu9KWj+Z/GBt8U3vhz78CiUZrw7zYWnjjw0XPAN ZZXOTzszeHQlUSwCTbbKxPsKU6ZNPSZ8jHTESPinbYZ30+7hGYY0jmsF+Mdji8x3OjvR WEToQz0ipZhi8kqUNkYKZkLJvr4C8uzwiKVuj2N42bSP8tAquogQtaBI2OSDBZZA6xlT brsA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=KqZyQlxZep5FPbrFL3HJFB2aFUNB9J2hzOC5R8+/04Q=; b=D5TG3Dpz2CcjyokUYqYdC9tZmrP4Lpg3i7rQd21DvJYLlmcBKz2NI+yzA3X7YoxlaM X6fgxlnaK1JR5+TRyTuhLBBjr2t7pmDXYSwluIcaWfEM/fkTDbqhay3hv6BspijaTDiX kqqdPqEtB10YwoTJQIdZ8SyFQ12e133lwYw9bE9SwRNp9yGbUh9+6O9aSheu8ReQOeP/ k0qnrEvVHG0xLn/bwPJ6BqYptRKul/nsDTm2O3w8ZOE9EmkUhR7gSk/HlXm6p+duLOrc JHYfiqvO0wofqWEF+e24e2MZeqYcIwCeeWf1hqx745Q669TqV/0KLt9rKasJ8+AN0N5Z 2gpQ== X-Gm-Message-State: AOAM533jaA3cppEP9ZR4KzBITziuy8HvSYgvRflYWdaJGDFHbAZvjA7L C0heg3eIzeHmCKKnF9DvzcQ= X-Google-Smtp-Source: ABdhPJxHAmVdbhGXee6ZEYxBEvkuVxhBjjkVcEojenOpJNe26t1u2QmrsDjwJOfLAx5Vb/O+NyYkzg== X-Received: by 2002:a05:6e02:1187:: with SMTP id y7mr33268979ili.143.1607937549705; Mon, 14 Dec 2020 01:19:09 -0800 (PST) From: Bin Meng To: Jean-Christophe Dubois , Peter Maydell , qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH 1/3] hw/misc: imx6_ccm: Update PMU_MISC0 reset value Date: Mon, 14 Dec 2020 17:18:56 +0800 Message-Id: <1607937538-69471-2-git-send-email-bmeng.cn@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1607937538-69471-1-git-send-email-bmeng.cn@gmail.com> References: <1607937538-69471-1-git-send-email-bmeng.cn@gmail.com> Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::144; envelope-from=bmeng.cn@gmail.com; helo=mail-il1-x144.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Bin Meng Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @gmail.com) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Bin Meng U-Boot expects PMU_MISC0 register bit 7 is set (see init_bandgap() in arch/arm/mach-imx/mx6/soc.c) during boot. This bit indicates the bandgap has stabilized. With this change, the latest upstream U-Boot (v2021.01-rc3) for imx6 sabrelite board (mx6qsabrelite_defconfig), with a slight change made by switching CONFIG_OF_SEPARATE to CONFIG_OF_EMBED, boots to U-Boot shell on QEMU with the following command: $ qemu-system-arm -M sabrelite -m 1G -kernel u-boot -display none \ -serial null -serial stdio Boot log below: U-Boot 2021.01-rc3 (Dec 12 2020 - 17:40:02 +0800) CPU: Freescale i.MX?? rev1.0 at 792 MHz Reset cause: POR Model: Freescale i.MX6 Quad SABRE Lite Board Board: SABRE Lite I2C: ready DRAM: 1 GiB force_idle_bus: sda=3D0 scl=3D0 sda.gp=3D0x5c scl.gp=3D0x55 force_idle_bus: failed to clear bus, sda=3D0 scl=3D0 force_idle_bus: sda=3D0 scl=3D0 sda.gp=3D0x6d scl.gp=3D0x6c force_idle_bus: failed to clear bus, sda=3D0 scl=3D0 force_idle_bus: sda=3D0 scl=3D0 sda.gp=3D0xcb scl.gp=3D0x5 force_idle_bus: failed to clear bus, sda=3D0 scl=3D0 MMC: FSL_SDHC: 0, FSL_SDHC: 1 Loading Environment from MMC... *** Warning - No block device, using defa= ult environment In: serial Out: serial Err: serial Net: Board Net Initialization Failed No ethernet found. starting USB... Bus usb@2184000: usb dr_mode not found USB EHCI 1.00 Bus usb@2184200: USB EHCI 1.00 scanning bus usb@2184000 for devices... 1 USB Device(s) found scanning bus usb@2184200 for devices... 1 USB Device(s) found scanning usb for storage devices... 0 Storage Device(s) found scanning usb for ethernet devices... 0 Ethernet Device(s) found Hit any key to stop autoboot: 0 =3D> Signed-off-by: Bin Meng --- hw/misc/imx6_ccm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/misc/imx6_ccm.c b/hw/misc/imx6_ccm.c index cb74042..7e031b6 100644 --- a/hw/misc/imx6_ccm.c +++ b/hw/misc/imx6_ccm.c @@ -450,7 +450,7 @@ static void imx6_ccm_reset(DeviceState *dev) s->analog[PMU_REG_3P0] =3D 0x00000F74; s->analog[PMU_REG_2P5] =3D 0x00005071; s->analog[PMU_REG_CORE] =3D 0x00402010; - s->analog[PMU_MISC0] =3D 0x04000000; + s->analog[PMU_MISC0] =3D 0x04000080; s->analog[PMU_MISC1] =3D 0x00000000; s->analog[PMU_MISC2] =3D 0x00272727; =20 --=20 2.7.4