GPIO PI6 can be used to obtain the write-protect status of an SD card inserted into the SD slot.
Signed-off-by: Thierry Reding thierry.reding@avionic-design.de --- Changes in v2: - new patch
board/avionic-design/common/tamonten.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/board/avionic-design/common/tamonten.c b/board/avionic-design/common/tamonten.c index 2b19d1e..7c92158 100644 --- a/board/avionic-design/common/tamonten.c +++ b/board/avionic-design/common/tamonten.c @@ -66,6 +66,8 @@ void gpio_early_init(void) static void pin_mux_mmc(void) { funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT); + /* for write-protect GPIO PI6 */ + pinmux_tristate_disable(PINGRP_ATA); /* for CD GPIO PH2 */ pinmux_tristate_disable(PINGRP_ATD); } @@ -77,7 +79,7 @@ int board_mmc_init(bd_t *bd) pin_mux_mmc();
/* init dev 0, SD slot, with 4-bit bus */ - tegra2_mmc_init(0, 4, -1, GPIO_PH2); + tegra2_mmc_init(0, 4, GPIO_PI6, GPIO_PH2);
return 0; }