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tegra: Use SD write-protect GPIO on Tamonten 

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>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Thierry Reding 2012-06-04 20:02:29 +00:00 committed by Albert ARIBAUD (U-Boot)
parent 22d58506f5
commit 7925454305
1 changed files with 3 additions and 1 deletions
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4
board/avionic-design/common/tamonten.c
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@ -65,6 +65,8 @@ void gpio_early_init(void)
static void pin_mux_mmc(void) static void pin_mux_mmc(void)
{ {
funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT); 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 */ /* for CD GPIO PH2 */
pinmux_tristate_disable(PINGRP_ATD); pinmux_tristate_disable(PINGRP_ATD);
} }
@ -76,7 +78,7 @@ int board_mmc_init(bd_t *bd)
pin_mux_mmc(); pin_mux_mmc();
/* init dev 0, SD slot, with 4-bit bus */ /* 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; return 0;
} }