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Tue, 05 Jan 2021 01:23:31 -0800 (PST) Received: from zen.linaroharston ([51.148.130.216]) by smtp.gmail.com with ESMTPSA id z63sm3565187wme.8.2021.01.05.01.23.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Jan 2021 01:23:30 -0800 (PST) Received: from zen (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id A9E9C1FF7E; Tue, 5 Jan 2021 09:23:29 +0000 (GMT) References: <1608704767-9317-1-git-send-email-bmeng.cn@gmail.com> <1608704767-9317-2-git-send-email-bmeng.cn@gmail.com> User-agent: mu4e 1.5.7; emacs 28.0.50 From: Alex =?utf-8?Q?Benn=C3=A9e?= To: Bin Meng Subject: Re: [PATCH v2 1/4] hw/misc: imx6_ccm: Update PMU_MISC0 reset value Date: Tue, 05 Jan 2021 09:23:21 +0000 In-reply-to: <1608704767-9317-2-git-send-email-bmeng.cn@gmail.com> Message-ID: <87o8i33ffy.fsf@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2a00:1450:4864:20::430; envelope-from=alex.bennee@linaro.org; helo=mail-wr1-x430.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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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 , Peter Maydell , qemu-arm@nongnu.org, qemu-devel@nongnu.org, Jean-Christophe Dubois Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Bin Meng writes: > 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 -smp 4 -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 de= fault 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 Reviewed-by: Alex Benn=C3=A9e --=20 Alex Benn=C3=A9e