On Wed, Dec 23, 2020 at 2:26 PM Bin Meng <[email protected]> wrote: > > From: Bin Meng <[email protected]> > > 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=0 scl=0 sda.gp=0x5c scl.gp=0x55 > force_idle_bus: failed to clear bus, sda=0 scl=0 > force_idle_bus: sda=0 scl=0 sda.gp=0x6d scl.gp=0x6c > force_idle_bus: failed to clear bus, sda=0 scl=0 > force_idle_bus: sda=0 scl=0 sda.gp=0xcb scl.gp=0x5 > force_idle_bus: failed to clear bus, sda=0 scl=0 > MMC: FSL_SDHC: 0, FSL_SDHC: 1 > Loading Environment from MMC... *** Warning - No block device, using > default 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 > => > > Signed-off-by: Bin Meng <[email protected]> > --- > > (no changes since v1) > > hw/misc/imx6_ccm.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) >
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