[U-Boot] [PATCH v2 4/4] am33xx: add support for beaglebone x16 NAND cape
Pekon Gupta
pekon at ti.com
Mon Sep 30 20:22:52 CEST 2013
beaglebone board can be connected to expansion boards to add devices to them.
These expansion boards are called 'capes'. This patch updates pin-mux for
'NAND' cape which can be used with beaglebone LT (white).
Further information and datasheets of this NAND cape can be found at:
- http://beagleboardtoys.info/index.php?title=BeagleBone_Memory_Expansion
- http://beagleboardtoys.info/index.php?title=BeagleBone_4Gb_16-Bit_NAND_Module
*Specifics for Beaglebone Cape*
(1) set CONFIG_SYS_NAND_DEVICE_WIDTH = 16 for detection of x16 NAND device
(2) On Memory-Expander Cape boot modes can be optionally be selected via
DIP switch(SW2) present on cape board.
SW2[SWITCH_BOOT] == 0: boot mode selected via DIP switch(SW2)
SW2[SWITCH_BOOT] == 1: follow default boot order
MMC-> SPI -> UART -> USB .. 24MHz
(2) As BOOTSEL values are sampled only at POR, so after changing any setting
on SW2 (DIP switch), disconnect and reconnect all board power supply
(including mini-USB) to POR the beaglebone.
Signed-off-by: Pekon Gupta <pekon at ti.com>
---
board/ti/am335x/mux.c | 71 ++++++++++++++++++++++++++++++++++++---------------
1 file changed, 51 insertions(+), 20 deletions(-)
diff --git a/board/ti/am335x/mux.c b/board/ti/am335x/mux.c
index b2bfda5..1985a78 100644
--- a/board/ti/am335x/mux.c
+++ b/board/ti/am335x/mux.c
@@ -171,25 +171,53 @@ static struct module_pin_mux mii1_pin_mux[] = {
{-1},
};
-static struct module_pin_mux nand_pin_mux[] = {
- {OFFSET(gpmc_ad0), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD0 */
- {OFFSET(gpmc_ad1), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD1 */
- {OFFSET(gpmc_ad2), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD2 */
- {OFFSET(gpmc_ad3), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD3 */
- {OFFSET(gpmc_ad4), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD4 */
- {OFFSET(gpmc_ad5), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD5 */
- {OFFSET(gpmc_ad6), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD6 */
- {OFFSET(gpmc_ad7), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* NAND AD7 */
- {OFFSET(gpmc_wait0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* NAND WAIT */
- {OFFSET(gpmc_wpn), (MODE(7) | PULLUP_EN | RXACTIVE)}, /* NAND_WPN */
- {OFFSET(gpmc_csn0), (MODE(0) | PULLUDEN)}, /* NAND_CS0 */
- {OFFSET(gpmc_advn_ale), (MODE(0) | PULLUDEN)}, /* NAND_ADV_ALE */
- {OFFSET(gpmc_oen_ren), (MODE(0) | PULLUDEN)}, /* NAND_OE */
- {OFFSET(gpmc_wen), (MODE(0) | PULLUDEN)}, /* NAND_WEN */
- {OFFSET(gpmc_be0n_cle), (MODE(0) | PULLUDEN)}, /* NAND_BE_CLE */
+#ifdef CONFIG_NAND
+static struct module_pin_mux nand_x16_pin_mux[] = {
+ {OFFSET(gpmc_ad0), (MODE(0) | RXACTIVE)}, /* NAND AD0 */
+ {OFFSET(gpmc_ad1), (MODE(0) | RXACTIVE)}, /* NAND AD1 */
+ {OFFSET(gpmc_ad2), (MODE(0) | RXACTIVE)}, /* NAND AD2 */
+ {OFFSET(gpmc_ad3), (MODE(0) | RXACTIVE)}, /* NAND AD3 */
+ {OFFSET(gpmc_ad4), (MODE(0) | RXACTIVE)}, /* NAND AD4 */
+ {OFFSET(gpmc_ad5), (MODE(0) | RXACTIVE)}, /* NAND AD5 */
+ {OFFSET(gpmc_ad6), (MODE(0) | RXACTIVE)}, /* NAND AD6 */
+ {OFFSET(gpmc_ad7), (MODE(0) | RXACTIVE)}, /* NAND AD7 */
+ {OFFSET(gpmc_ad8), (MODE(0) | RXACTIVE)}, /* NAND AD8 */
+ {OFFSET(gpmc_ad9), (MODE(0) | RXACTIVE)}, /* NAND AD9 */
+ {OFFSET(gpmc_ad10), (MODE(0) | RXACTIVE)}, /* NAND AD10 */
+ {OFFSET(gpmc_ad11), (MODE(0) | RXACTIVE)}, /* NAND AD11 */
+ {OFFSET(gpmc_ad12), (MODE(0) | RXACTIVE)}, /* NAND AD12 */
+ {OFFSET(gpmc_ad13), (MODE(0) | RXACTIVE)}, /* NAND AD13 */
+ {OFFSET(gpmc_ad14), (MODE(0) | RXACTIVE)}, /* NAND AD14 */
+ {OFFSET(gpmc_ad15), (MODE(0) | RXACTIVE)}, /* NAND AD15 */
+ {OFFSET(gpmc_wait0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /*NAND WAIT*/
+ {OFFSET(gpmc_wpn), (MODE(7) | PULLUP_EN)}, /*NAND_WPN need pullup*/
+ {OFFSET(gpmc_csn0), (MODE(0) | PULLUDDIS)}, /* NAND_CS0 */
+ {OFFSET(gpmc_wen), (MODE(0) | PULLUDDIS)}, /* NAND_WEN */
+ {OFFSET(gpmc_oen_ren), (MODE(0) | PULLUDDIS)}, /* NAND_OE */
+ {OFFSET(gpmc_advn_ale), (MODE(0) | PULLUDDIS)}, /* NAND_ADV_ALE */
+ {OFFSET(gpmc_be0n_cle), (MODE(0) | PULLUDDIS)}, /* NAND_BE_CLE */
{-1},
};
+static struct module_pin_mux nand_x8_pin_mux[] = {
+ {OFFSET(gpmc_ad0), (MODE(0) | RXACTIVE)}, /* NAND AD0 */
+ {OFFSET(gpmc_ad1), (MODE(0) | RXACTIVE)}, /* NAND AD1 */
+ {OFFSET(gpmc_ad2), (MODE(0) | RXACTIVE)}, /* NAND AD2 */
+ {OFFSET(gpmc_ad3), (MODE(0) | RXACTIVE)}, /* NAND AD3 */
+ {OFFSET(gpmc_ad4), (MODE(0) | RXACTIVE)}, /* NAND AD4 */
+ {OFFSET(gpmc_ad5), (MODE(0) | RXACTIVE)}, /* NAND AD5 */
+ {OFFSET(gpmc_ad6), (MODE(0) | RXACTIVE)}, /* NAND AD6 */
+ {OFFSET(gpmc_ad7), (MODE(0) | RXACTIVE)}, /* NAND AD7 */
+ {OFFSET(gpmc_wait0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /*NAND WAIT*/
+ {OFFSET(gpmc_wpn), (MODE(7) | PULLUP_EN)}, /*NAND_WPN need pullup*/
+ {OFFSET(gpmc_csn0), (MODE(0) | PULLUDDIS)}, /* NAND_CS0 */
+ {OFFSET(gpmc_wen), (MODE(0) | PULLUDDIS)}, /* NAND_WEN */
+ {OFFSET(gpmc_oen_ren), (MODE(0) | PULLUDDIS)}, /* NAND_OE */
+ {OFFSET(gpmc_advn_ale), (MODE(0) | PULLUDDIS)}, /* NAND_ADV_ALE */
+ {OFFSET(gpmc_be0n_cle), (MODE(0) | PULLUDDIS)}, /* NAND_BE_CLE */
+ {-1},
+};
+#endif
#if defined(CONFIG_NOR) && !defined(CONFIG_NOR_BOOT)
static struct module_pin_mux bone_norcape_pin_mux[] = {
{OFFSET(lcd_data0), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A0 */
@@ -336,11 +364,12 @@ void enable_board_pin_mux(struct am335x_baseboard_id *header)
configure_module_pin_mux(i2c1_pin_mux);
configure_module_pin_mux(mii1_pin_mux);
configure_module_pin_mux(mmc0_pin_mux);
-#ifndef CONFIG_NOR
- configure_module_pin_mux(mmc1_pin_mux);
-#endif
#if defined(CONFIG_NOR) && !defined(CONFIG_NOR_BOOT)
configure_module_pin_mux(bone_norcape_pin_mux);
+#elif defined(CONFIG_NAND)
+ configure_module_pin_mux(nand_x16_pin_mux);
+#else
+ configure_module_pin_mux(mmc1_pin_mux);
#endif
} else if (board_is_gp_evm(header)) {
/* General Purpose EVM */
@@ -351,8 +380,10 @@ void enable_board_pin_mux(struct am335x_baseboard_id *header)
if (profile & ~PROFILE_2)
configure_module_pin_mux(i2c1_pin_mux);
/* Profiles 2 & 3 don't have NAND */
+#ifdef CONFIG_NAND
if (profile & ~(PROFILE_2 | PROFILE_3))
- configure_module_pin_mux(nand_pin_mux);
+ configure_module_pin_mux(nand_x8_pin_mux);
+#endif
else if (profile == PROFILE_2) {
configure_module_pin_mux(mmc1_pin_mux);
configure_module_pin_mux(spi0_pin_mux);
--
1.8.1
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