+ u_int32_t acfg1 = 0x3ffffffc;
+ u_int32_t acfg2 = 0x3ffffffc;
+ u_int32_t acfg3 = 0x3ffffffc;
+ u_int32_t acfg4 = 0x3ffffffc;
+ emifregs emif_regs;
+
+ /*------------------------------------------------------------------*
+ * NAND FLASH CHIP TIMEOUT @ 459 MHz *
+ * *
+ * AEMIF.CLK freq = PLL1/6 = 459/6 = 76.5 MHz *
+ * AEMIF.CLK period = 1/76.5 MHz = 13.1 ns *
+ * *
+ *------------------------------------------------------------------*/
+ acfg1 = 0
+ | (0 << 31 ) /* selectStrobe */
+ | (0 << 30 ) /* extWait */
+ | (1 << 26 ) /* writeSetup 10 ns */
+ | (3 << 20 ) /* writeStrobe 40 ns */
+ | (1 << 17 ) /* writeHold 10 ns */
+ | (1 << 13 ) /* readSetup 10 ns */
+ | (5 << 7 ) /* readStrobe 60 ns */
+ | (1 << 4 ) /* readHold 10 ns */
+ | (3 << 2 ) /* turnAround ?? ns */
+ | (0 << 0 ) /* asyncSize 8-bit bus */
+ ;
+
+ emif_regs = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE;
+
+ emif_regs->AWCCR |= 0x10000000;
+ emif_regs->AB1CR = acfg1; /* 0x08244128 */;
+ emif_regs->AB2CR = acfg2;
+ emif_regs->AB3CR = acfg3;
+ emif_regs->AB4CR = acfg4;
+ emif_regs->NANDFCR = 0x00000101;