The YModem support in SPL was never really used on this device, the SDP support is much more convenient on i.MX8M Mini based hardware. Replace the YModem support with SDP support.

The SDP can be utilized by forcing the board into SDP boot mode by grounding test point right next to silkscreen label U30, and then by using mfgtools 'uuu -brun spl flash.bin' once the device enumerates on host system USB bus. The SDP capable USB port is available on the USB micro-B port on the base board.

Signed-off-by: Marek Vasut marex@denx.de --- NOTE: Would be nice to have in v2025.01 --- Cc: "NXP i.MX U-Boot Team" uboot-imx@nxp.com Cc: Fabio Estevam festevam@gmail.com Cc: Quentin Schulz quentin.schulz@cherry.de Cc: Sean Anderson seanga2@gmail.com Cc: Simon Glass sjg@chromium.org Cc: Stefano Babic sbabic@denx.de Cc: Tom Rini trini@konsulko.com Cc: u-boot@lists.denx.de --- V2: Drop the SPL YMODEM from defconfig --- arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi | 9 +++++++++ board/data_modul/imx8mm_edm_sbc/spl.c | 6 ++++-- configs/imx8mm_data_modul_edm_sbc_defconfig | 7 ++++++- 3 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi b/arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi index fb6951026d9..f5e98bf7487 100644 --- a/arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi +++ b/arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi @@ -145,8 +145,17 @@ bootph-pre-ram; };

+&usbmisc1 { + bootph-pre-ram; +}; + +&usbphynop1 { + bootph-pre-ram; +}; + &usbotg1 { dr_mode = "peripheral"; + bootph-pre-ram; };

&usdhc2 { diff --git a/board/data_modul/imx8mm_edm_sbc/spl.c b/board/data_modul/imx8mm_edm_sbc/spl.c index 17aafd719c9..a9ef049652a 100644 --- a/board/data_modul/imx8mm_edm_sbc/spl.c +++ b/board/data_modul/imx8mm_edm_sbc/spl.c @@ -61,8 +61,10 @@ int spl_board_boot_device(enum boot_device boot_dev_spl) { if (boot_dev_spl == MMC3_BOOT) return BOOT_DEVICE_MMC2; /* eMMC */ - else + else if (boot_dev_spl == MMC2_BOOT) return BOOT_DEVICE_MMC1; /* SD */ + else + return BOOT_DEVICE_BOARD; }

void board_boot_order(u32 *spl_boot_list) @@ -76,7 +78,7 @@ void board_boot_order(u32 *spl_boot_list) else spl_boot_list[1] = BOOT_DEVICE_MMC1; /* SD */

- spl_boot_list[2] = BOOT_DEVICE_UART; /* YModem */ + spl_boot_list[2] = BOOT_DEVICE_BOARD; /* SDP */ spl_boot_list[3] = BOOT_DEVICE_NONE; }

diff --git a/configs/imx8mm_data_modul_edm_sbc_defconfig b/configs/imx8mm_data_modul_edm_sbc_defconfig index 7c9d4ee1844..518243e6513 100644 --- a/configs/imx8mm_data_modul_edm_sbc_defconfig +++ b/configs/imx8mm_data_modul_edm_sbc_defconfig @@ -12,17 +12,22 @@ CONFIG_DM_REGULATOR_BD71837=y CONFIG_IMX_CONFIG="board/data_modul/imx8mm_edm_sbc/imximage.cfg" CONFIG_PHYLIB=y CONFIG_PREBOOT="run dmo_preboot" +CONFIG_SDP_LOADADDR=0x60000000 CONFIG_SPL_BSS_MAX_SIZE=0x2000 CONFIG_SPL_BSS_START_ADDR=0x910000 +CONFIG_SPL_MAX_SIZE=0x30000 CONFIG_SPL_CLK_IMX8MM=y CONFIG_SPL_CUSTOM_SYS_MALLOC_ADDR=0x42200000 CONFIG_SPL_DM_PMIC_BD71837=y CONFIG_SPL_DM_REGULATOR_BD71837=y +CONFIG_SPL_DM_USB=y CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK=y CONFIG_SPL_LEGACY_IMAGE_FORMAT=y CONFIG_SPL_RAM_DEVICE=y CONFIG_SPL_STACK=0x920000 CONFIG_SPL_SYS_MALLOC_SIZE=0x1000000 CONFIG_SPL_TEXT_BASE=0x7E1000 -CONFIG_SPL_YMODEM_SUPPORT=y +CONFIG_SPL_USB_GADGET=y +CONFIG_SPL_USB_HOST=y +CONFIG_SPL_USB_SDP_SUPPORT=y CONFIG_SYS_LOAD_ADDR=0x60000000