From bd1cc6ae6f8a8f2c1c44263e3a89f853c237306e Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Mon, 22 Jul 2019 01:24:39 +0000 Subject: [PATCH] i.MX7ULP: evk: Modify FDT file to disable SD3.0 for usb boot 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 --- 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 +#include #include #include #include #include +#include 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 df854436a0..dc6cc2ba37 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 -- 2.25.1