From 41855186afd35669228e103a43e4eaf42fcc6496 Mon Sep 17 00:00:00 2001 From: Nikita Kiryanov Date: Sun, 6 Sep 2015 11:48:38 +0300 Subject: arm: mx6: cm-fx6: modify device tree for old revisions of utilite Old revisions of Utilite (a miniature PC based on cm-fx6) do not have a card detect for mmc, and thus the kernel needs to be told that there's a persistent storage on usdhc3 to force it to probe the mmc card. Check the baseboard revision and modify the device tree accordingly if needed. Cc: Stefano Babic Cc: Igor Grinberg Signed-off-by: Nikita Kiryanov --- board/compulab/cm_fx6/cm_fx6.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'board/compulab') diff --git a/board/compulab/cm_fx6/cm_fx6.c b/board/compulab/cm_fx6/cm_fx6.c index cb741e8..01871e1 100644 --- a/board/compulab/cm_fx6/cm_fx6.c +++ b/board/compulab/cm_fx6/cm_fx6.c @@ -561,9 +561,14 @@ int cm_fx6_setup_ecspi(void) { return 0; } #endif #ifdef CONFIG_OF_BOARD_SETUP +#define USDHC3_PATH "/soc/aips-bus@02100000/usdhc@02198000/" int ft_board_setup(void *blob, bd_t *bd) { + u32 baseboard_rev; + int nodeoffset; uint8_t enetaddr[6]; + char baseboard_name[16]; + int err; /* MAC addr */ if (eth_getenv_enetaddr("ethaddr", enetaddr)) { @@ -577,6 +582,21 @@ int ft_board_setup(void *blob, bd_t *bd) enetaddr, 6, 1); } + baseboard_rev = cl_eeprom_get_board_rev(0); + err = cl_eeprom_get_product_name((uchar *)baseboard_name, 0); + if (err || baseboard_rev == 0) + return 0; /* Assume not an early revision SB-FX6m baseboard */ + + if (!strncmp("SB-FX6m", baseboard_name, 7) && baseboard_rev <= 120) { + fdt_shrink_to_minimum(blob); /* Make room for new properties */ + nodeoffset = fdt_path_offset(blob, USDHC3_PATH); + fdt_delprop(blob, nodeoffset, "cd-gpios"); + fdt_find_and_setprop(blob, USDHC3_PATH, "non-removable", + NULL, 0, 1); + fdt_find_and_setprop(blob, USDHC3_PATH, "keep-power-in-suspend", + NULL, 0, 1); + } + return 0; } #endif -- cgit v1.1