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i.MX7ULP: evk: Modify FDT file to disable SD3.0 for usb boot

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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>
This commit is contained in:
Peng Fan 2019-07-22 01:24:39 +00:00 committed by Stefano Babic
parent e92fca66a3
commit bd1cc6ae6f
2 changed files with 48 additions and 0 deletions
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47
board/freescale/mx7ulp_evk/mx7ulp_evk.c
View File

@ -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

1
configs/mx7ulp_evk_defconfig
View File

@ -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