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| author | Markus Klotzbücher <Markus Klotzbümk@pollux.(none)> | 2006-02-28 22:51:01 +0100 |
|---|---|---|
| committer | Markus Klotzbücher <mk@pollux.(none)> | 2006-02-28 22:51:01 +0100 |
| commit | 00c35bd2140f02111612771ca9c53dc8b58205eb (patch) | |
| tree | 58a8111a4f8c0539d34953483dc795e4d90ba2e6 /board/delta/nand.c | |
| parent | 6949328d7df7a98b88a8edc0f7238687a3083a22 (diff) | |
| download | u-boot-imx-00c35bd2140f02111612771ca9c53dc8b58205eb.zip u-boot-imx-00c35bd2140f02111612771ca9c53dc8b58205eb.tar.gz u-boot-imx-00c35bd2140f02111612771ca9c53dc8b58205eb.tar.bz2 | |
Added GPIO initialization of DF signal. Still not working.
Diffstat (limited to 'board/delta/nand.c')
| -rw-r--r-- | board/delta/nand.c | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/board/delta/nand.c b/board/delta/nand.c index 9caddba..bd1bb4f 100644 --- a/board/delta/nand.c +++ b/board/delta/nand.c @@ -141,7 +141,7 @@ static void delta_cmdfunc(struct mtd_info *mtd, unsigned command, switch (command) { case NAND_CMD_READID: printk("delta_cmdfunc: NAND_CMD_READID.\n"); - ndcb0 |= ((3 << 21) | (2 << 16)); + ndcb0 |= ((3 << 21) | (1 << 16)); /* addr cycles*/ break; case NAND_CMD_PAGEPROG: case NAND_CMD_ERASE1: @@ -161,6 +161,43 @@ static void delta_cmdfunc(struct mtd_info *mtd, unsigned command, NDCB2 = ndcb2; } +void delta_dfc_gpio_init() +{ + printf("Setting up DFC GPIO's.\n"); + + /* no idea what is done here, see zylonite.c */ + GPIO4 = 0x1; + + DF_ALE_WE1 = 0x00000001; + DF_ALE_WE2 = 0x00000001; + DF_nCS0 = 0x00000001; + DF_nCS1 = 0x00000001; + DF_nWE = 0x00000001; + DF_nRE = 0x00000001; + DF_IO0 = 0x00000001; + DF_IO8 = 0x00000001; + DF_IO1 = 0x00000001; + DF_IO9 = 0x00000001; + DF_IO2 = 0x00000001; + DF_IO10 = 0x00000001; + DF_IO3 = 0x00000001; + DF_IO11 = 0x00000001; + DF_IO4 = 0x00000001; + DF_IO12 = 0x00000001; + DF_IO5 = 0x00000001; + DF_IO13 = 0x00000001; + DF_IO6 = 0x00000001; + DF_IO14 = 0x00000001; + DF_IO7 = 0x00000001; + DF_IO15 = 0x00000001; + + DF_nWE = 0x1901; + DF_nRE = 0x1901; + DF_CLE_NOE = 0x1900; + DF_ALE_WE1 = 0x1901; + DF_INT_RnB = 0x1900; +} + /* * Board-specific NAND initialization. The following members of the * argument are board-specific (per include/linux/mtd/nand_new.h): @@ -184,7 +221,8 @@ void board_nand_init(struct nand_chip *nand) unsigned long tCH, tCS, tWH, tWP, tRH, tRP, tRP_high, tR, tWHR, tAR; /* set up GPIO Control Registers */ - + delta_dfc_gpio_init(); + /* turn on the NAND Controller Clock (104 MHz @ D0) */ CKENA |= (CKENA_4_NAND | CKENA_9_SMC); |