diff options
| -rw-r--r-- | board/freescale/ls1012ardb/ls1012ardb.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/board/freescale/ls1012ardb/ls1012ardb.c b/board/freescale/ls1012ardb/ls1012ardb.c index 778434d..65fa94c 100644 --- a/board/freescale/ls1012ardb/ls1012ardb.c +++ b/board/freescale/ls1012ardb/ls1012ardb.c @@ -113,6 +113,44 @@ int board_init(void) return 0; } +int esdhc_status_fixup(void *blob, const char *compat) +{ + char esdhc0_path[] = "/soc/esdhc@1560000"; + char esdhc1_path[] = "/soc/esdhc@1580000"; + u8 io = 0; + u8 mux_sdhc2; + + do_fixup_by_path(blob, esdhc0_path, "status", "okay", + sizeof("okay"), 1); + + i2c_set_bus_num(0); + + /* + * The I2C IO-expander for mux select is used to control the muxing + * of various onboard interfaces. + * + * IO1[3:2] indicates SDHC2 interface demultiplexer select lines. + * 00 - SDIO wifi + * 01 - GPIO (to Arduino) + * 10 - eMMC Memory + * 11 - SPI + */ + if (i2c_read(I2C_MUX_IO1_ADDR, 0, 1, &io, 1) < 0) { + printf("Error reading i2c boot information!\n"); + return 0; /* Don't want to hang() on this error */ + } + + mux_sdhc2 = (io & 0x0c) >> 2; + /* Enable SDHC2 only when use SDIO wifi and eMMC */ + if (mux_sdhc2 == 2 || mux_sdhc2 == 0) + do_fixup_by_path(blob, esdhc1_path, "status", "okay", + sizeof("okay"), 1); + else + do_fixup_by_path(blob, esdhc1_path, "status", "disabled", + sizeof("disabled"), 1); + return 0; +} + int ft_board_setup(void *blob, bd_t *bd) { arch_fixup_fdt(blob); |