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ARM: tegra: enable 8-bit SD slots in board files 

Harmony contains an SD slot with all 8 bits routed. This allows plugging
in an eMMC-chip-in-SD-form-factor.

Seaboard/Springbank/Ventana/AC100 all have an eMMC chip with all 8 bits
hooked up.

Now that the U-Boot eMMC code fully supports 8-bit operation, initialize
those ports as 8-bit instead of 4-bit to improve performance.

Whistler was already registering its ports as 8-bit.

TrimSlice doesn't have any 8-bit ports.

I don't have any Avionic Design boards nor the Colibri board to test with.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Stephen Warren 2012-11-02 06:56:13 +00:00 committed by Tom Warren
parent 8c0ec0dbc4
commit 72573543b5
3 changed files with 6 additions and 9 deletions
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5
board/compal/paz00/paz00.c
View File

@ -61,9 +61,8 @@ int board_mmc_init(bd_t *bd)
pin_mux_mmc();
debug("board_mmc_init: init eMMC\n");
/* init dev 0, eMMC chip, with 4-bit bus */
/* The board has an 8-bit bus, but 8-bit doesn't work yet */
tegra_mmc_init(0, 4, -1, -1);
/* init dev 0, eMMC chip, with 8-bit bus */
tegra_mmc_init(0, 8, -1, -1);
debug("board_mmc_init: init SD slot\n");
/* init dev 3, SD slot, with 4-bit bus */

5
board/nvidia/harmony/harmony.c
View File

@ -64,9 +64,8 @@ int board_mmc_init(bd_t *bd)
pin_mux_mmc();
debug("board_mmc_init: init SD slot J26\n");
/* init dev 0, SD slot J26, with 4-bit bus */
/* The board has an 8-bit bus, but 8-bit doesn't work yet */
tegra_mmc_init(0, 4, GPIO_PI6, GPIO_PH2);
/* init dev 0, SD slot J26, with 8-bit bus */
tegra_mmc_init(0, 8, GPIO_PI6, GPIO_PH2);
debug("board_mmc_init: init SD slot J5\n");
/* init dev 2, SD slot J5, with 4-bit bus */

5
board/nvidia/seaboard/seaboard.c
View File

@ -71,9 +71,8 @@ int board_mmc_init(bd_t *bd)
pin_mux_mmc();
debug("board_mmc_init: init eMMC\n");
/* init dev 0, eMMC chip, with 4-bit bus */
/* The board has an 8-bit bus, but 8-bit doesn't work yet */
tegra_mmc_init(0, 4, -1, -1);
/* init dev 0, eMMC chip, with 8-bit bus */
tegra_mmc_init(0, 8, -1, -1);
debug("board_mmc_init: init SD slot\n");
/* init dev 1, SD slot, with 4-bit bus */