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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 <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
This commit is contained in:
Nikita Kiryanov 2015-09-06 11:48:38 +03:00 committed by Stefano Babic
parent 53af877fd2
commit 41855186af
1 changed files with 20 additions and 0 deletions
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20
board/compulab/cm_fx6/cm_fx6.c
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@ -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