Since the SD3.0 kernel driver needs M4 image support, this causes problem for usb boot booting into kernel. To decouple the relationship, we modify the FDT file in u-boot to disable SD3.0. So the kernel won't depend on M4 image.
Signed-off-by: Peng Fan peng.fan@nxp.com --- board/freescale/mx7ulp_evk/mx7ulp_evk.c | 47 +++++++++++++++++++++++++++++++++ configs/mx7ulp_evk_defconfig | 1 + 2 files changed, 48 insertions(+)
diff --git a/board/freescale/mx7ulp_evk/mx7ulp_evk.c b/board/freescale/mx7ulp_evk/mx7ulp_evk.c index 3a12fe1551..7527263577 100644 --- a/board/freescale/mx7ulp_evk/mx7ulp_evk.c +++ b/board/freescale/mx7ulp_evk/mx7ulp_evk.c @@ -4,10 +4,12 @@ */
#include <common.h> +#include <fdt_support.h> #include <asm/io.h> #include <asm/arch/sys_proto.h> #include <asm/arch/mx7ulp-pins.h> #include <asm/arch/iomux.h> +#include <asm/mach-imx/boot_mode.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -45,3 +47,48 @@ int board_init(void)
return 0; } + +#if IS_ENABLED(CONFIG_OF_BOARD_SETUP) +int ft_board_setup(void *blob, bd_t *bd) +{ + const char *path; + int rc, nodeoff; + + if (get_boot_device() == USB_BOOT) { + path = fdt_get_alias(blob, "mmc0"); + if (!path) { + puts("Not found mmc0\n"); + return 0; + } + + nodeoff = fdt_path_offset(blob, path); + if (nodeoff < 0) + return 0; + + printf("Found usdhc0 node\n"); + if (fdt_get_property(blob, nodeoff, "vqmmc-supply", + NULL) != NULL) { + rc = fdt_delprop(blob, nodeoff, "vqmmc-supply"); + if (!rc) { + puts("Removed vqmmc-supply property\n"); +add: + rc = fdt_setprop(blob, nodeoff, + "no-1-8-v", NULL, 0); + if (rc == -FDT_ERR_NOSPACE) { + rc = fdt_increase_size(blob, 32); + if (!rc) + goto add; + } else if (rc) { + printf("Failed to add no-1-8-v property, %d\n", rc); + } else { + puts("Added no-1-8-v property\n"); + } + } else { + printf("Failed to remove vqmmc-supply property, %d\n", rc); + } + } + } + + return 0; +} +#endif diff --git a/configs/mx7ulp_evk_defconfig b/configs/mx7ulp_evk_defconfig index d125ccc1af..c7af66b2e9 100644 --- a/configs/mx7ulp_evk_defconfig +++ b/configs/mx7ulp_evk_defconfig @@ -3,6 +3,7 @@ CONFIG_ARCH_MX7ULP=y CONFIG_SYS_TEXT_BASE=0x67800000 CONFIG_TARGET_MX7ULP_EVK=y CONFIG_NR_DRAM_BANKS=1 +CONFIG_OF_BOARD_SETUP=y CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/freescale/mx7ulp_evk/imximage.cfg" CONFIG_BOUNCE_BUFFER=y CONFIG_HUSH_PARSER=y