Added GPIO initialization of DF signal. Still not working.

[karo-tx-uboot.git] / board / delta / nand.c

diff --git a/board/delta/nand.c b/board/delta/nand.c
index 9caddba06450b32f07b862e9ef6869bc12ed7577..bd1bb4f698ef370f64e665407aa1ad3c5e54bd06 100644 (file)
--- 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);