On 8/31/2017 6:56 AM, Fabio Estevam wrote: > On Thu, Aug 31, 2017 at 10:35 AM, Fabio Estevam <feste...@gmail.com> wrote: >> Hi Eric, >> >> On Wed, Aug 30, 2017 at 7:13 PM, Eric Nelson <e...@nelint.com> wrote: >>> This adds support for two additional boot modes on the i.MX7D SoC, which >>> is most useful when doing U-Boot development on this chip. >>> >>> 1. "bmode usb" can be used to force the ROM boot loader's serial >>> 2. "bmode normal" can be used to revert to the normal boot mode >>> as specified by fuses and BOOT_MODE pins >>> >>> Signed-off-by: Eric Nelson <e...@nelint.com> >> >> I tried testing your patch on a imx7d sabresd, but it seems there is >> an issue with bmode that is unrelated to your patch. >> >> I also did: >> >> diff --git a/configs/mx7dsabresd_defconfig b/configs/mx7dsabresd_defconfig >> index 8f2e33a..c70fde8 100644 >> --- a/configs/mx7dsabresd_defconfig >> +++ b/configs/mx7dsabresd_defconfig >> @@ -5,7 +5,6 @@ CONFIG_VIDEO=y >> # CONFIG_ARMV7_VIRT is not set >> CONFIG_IMX_RDC=y >> CONFIG_IMX_BOOTAUX=y >> -# CONFIG_CMD_BMODE is not set >> CONFIG_DEFAULT_DEVICE_TREE="imx7d-sdb" >> >> CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/freescale/mx7dsabresd/imximage.cfg" >> CONFIG_BOOTDELAY=3 >> >> so that bmode command can be added. >> >> However I am getting: >> >> => bmode usb >> bmode - <NULL> > > I missed to add 'add_board_boot_modes(board_boot_modes);' > > Now I get: > > => bmode usb > resetting ... > > > U-Boot 2017.09-rc2-36996-g63af4b0-dirty (Aug 31 2017 - 10:53:12 -0300) > > CPU: Freescale i.MX7D rev1.2 1000 MHz (running at 792 MHz) > CPU: Commercial temperature grade (0C to 95C) at 41C > Reset cause: POR > Model: Freescale i.MX7 SabreSD Board > Board: i.MX7D SABRESD in non-secure mode > DRAM: 1 GiB > PMIC: PFUZE3000 DEV_ID=0x30 REV_ID=0x11 > MMC: > MMC Device 0 not found > *** Warning - No MMC card found, using default environment > > Video: 480x272x24 > In: serial > Out: serial > Err: serial > Net: FEC0 > Hit any key to stop autoboot: 0 > => > > So the board is resetting instead of going into serial download mode. > > Any ideas? > >
I got this response from Peng when I asked him back in March of last year. > For now, bmode does not work. Since bmode use warm reset, but we now use > wdog to directly reset pmic. So bmode will not work. > > Please check your code to see whether your board connect WDOG_B to pmic reset > pin and have wdog pinmux settings. > > Thanks, > Peng. Maybe if you change the WDOG pinmux it might work ? Troy _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot