mirror of
https://github.com/AsahiLinux/u-boot
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3041e094e4
In some situations the GSC firmware where the EEPROM containing the model and DRAM configuration may not be ready by the time the SoC is ready to talk to it over I2C. Instead of a hard delay, poll the I2C lines to wait until they are released to avoid the I2C drivers 'Arbitation lost' error message. Signed-off-by: Tim Harvey <tharvey@gateworks.com> Reviewed-by: Fabio Estevam <festevam@denx.de> |
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| .. | ||
| eeprom.c | ||
| eeprom.h | ||
| imximage-8mm-lpddr4.cfg | ||
| imximage-8mn-lpddr4.cfg | ||
| imximage-8mp-lpddr4.cfg | ||
| Kconfig | ||
| lpddr4_timing.h | ||
| lpddr4_timing_imx8mm.c | ||
| lpddr4_timing_imx8mm_512mb.c | ||
| lpddr4_timing_imx8mn.c | ||
| lpddr4_timing_imx8mp.c | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
| spl.c | ||
| venice.c | ||
| venice.env | ||
U-Boot for the Gateworks i.MX8M Mini Venice Development Kit boards Quick Start =========== - Build the ARM Trusted firmware binary - Get ddr firmware - Build U-Boot - Flash to eMMC - Boot Get and Build the ARM Trusted firmware ====================================== $ git clone https://github.com/nxp-imx/imx-atf $ git checkout imx_5.4.47_2.2.0 $ make PLAT=imx8mm CROSS_COMPILE=aarch64-linux-gnu- bl31 $ cp build/imx8mm/release/bl31.bin . Get the DDR Firmware ==================== $ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.9.bin $ chmod +x firmware-imx-8.9.bin $ ./firmware-imx-8.9.bin $ cp firmware-imx-8.9/firmware/ddr/synopsys/lpddr4*.bin . Build U-Boot ============ $ make imx8mm_venice_defconfig $ make CROSS_COMPILE=aarch64-linux-gnu- Update eMMC =========== => tftpboot $loadaddr flash.bin => setexpr blkcnt $filesize + 0x1ff && setexpr blkcnt $blkcnt / 0x200 => mmc dev 2 && mmc write $loadaddr 0x42 $blkcnt # for IMX8MM => mmc dev 2 && mmc write $loadaddr 0x40 $blkcnt # for IMX8MN