tegra2: Move board_mmc_init into board files

For Seaboard, this is mostly a cut/paste of board_mmc_init() and
pin_mux_mmc() into seaboard.c; pin_mux_mmc() was modified to add some
missing pinmux_tristate_disable calls for the GPIOs.

For Harmony, those functions were modified to configure SDMMC2 (index 2)
instead of SDMMC3 (index 1), since that's what is present on the board.

However, harmony.c is still missing the required GPIO setup, so neither
port is likely to function correctly yet.  This will be fixed in the next
change.

v4: Include board.h to prototype tegra2_mmc_init().

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/board/nvidia/seaboard/seaboard.c b/board/nvidia/seaboard/seaboard.c
index bc67d0f94c..22a0e69f06 100644
--- a/board/nvidia/seaboard/seaboard.c
+++ b/board/nvidia/seaboard/seaboard.c
@@ -24,10 +24,12 @@
 #include <common.h>
 #include <asm/io.h>
 #include <asm/arch/tegra2.h>
+#include <asm/arch/pinmux.h>
 #include <asm/gpio.h>
 #ifdef CONFIG_TEGRA2_MMC
 #include <mmc.h>
 #endif
+#include "../common/board.h"
 
 /*
  * Routine: gpio_config_uart
@@ -56,6 +58,36 @@ void gpio_config_uart(void)
 
 #ifdef CONFIG_TEGRA2_MMC
 /*
+ * Routine: pin_mux_mmc
+ * Description: setup the pin muxes/tristate values for the SDMMC(s)
+ */
+static void pin_mux_mmc(void)
+{
+	/* SDMMC4: config 3, x8 on 2nd set of pins */
+	pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4);
+	pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4);
+	pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4);
+
+	pinmux_tristate_disable(PINGRP_ATB);
+	pinmux_tristate_disable(PINGRP_GMA);
+	pinmux_tristate_disable(PINGRP_GME);
+
+	/* SDMMC3: SDIO3_CLK, SDIO3_CMD, SDIO3_DAT[3:0] */
+	pinmux_set_func(PINGRP_SDB, PMUX_FUNC_SDIO3);
+	pinmux_set_func(PINGRP_SDC, PMUX_FUNC_SDIO3);
+	pinmux_set_func(PINGRP_SDD, PMUX_FUNC_SDIO3);
+
+	pinmux_tristate_disable(PINGRP_SDC);
+	pinmux_tristate_disable(PINGRP_SDD);
+	pinmux_tristate_disable(PINGRP_SDB);
+
+	/* For power GPIO PI6 */
+	pinmux_tristate_disable(PINGRP_ATA);
+	/* For CD GPIO PI5 */
+	pinmux_tristate_disable(PINGRP_ATC);
+}
+
+/*
  * Routine: gpio_config_mmc
  * Description: Set GPIOs for SDMMC3 SDIO slot.
  */
@@ -69,6 +101,27 @@ void gpio_config_mmc(void)
 }
 
 /* this is a weak define that we are overriding */
+int board_mmc_init(bd_t *bd)
+{
+	debug("board_mmc_init called\n");
+
+	/* Enable muxes, etc. for SDMMC controllers */
+	pin_mux_mmc();
+	gpio_config_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 */
+	tegra2_mmc_init(0, 4);
+
+	debug("board_mmc_init: init SD slot\n");
+	/* init dev 1, SD slot, with 4-bit bus */
+	tegra2_mmc_init(1, 4);
+
+	return 0;
+}
+
+/* this is a weak define that we are overriding */
 int board_mmc_getcd(u8 *cd, struct mmc *mmc)
 {
 	debug("board_mmc_getcd called\n");