nand/raw/kb9202_nand.c

1 // SPDX-License-Identifier: GPL-2.0+
15 #include <nand.h>
18  *      hardware specific access to control-lines
25 #define KB9202_NAND_BUSY (1 << 29) /* RB* on D29 */
33  *	Board-specific function to access device control signals
40 		ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;  in kb9202_nand_hwcontrol()
51 		this->IO_ADDR_W = (void *) IO_ADDR_W;  in kb9202_nand_hwcontrol()
60 		writeb(cmd, this->IO_ADDR_W);  in kb9202_nand_hwcontrol()
65  * Board-specific function to access the device ready signal.
74  * Board-specific NAND init.  Copied from include/linux/mtd/nand.h for reference.
76  * struct nand_chip - NAND Private Flash Chip Data
79  * @hwcontrol:		[BOARDSPECIFIC] hardwarespecific function for accesing control-lines
93 int board_nand_init(struct nand_chip *nand)  in board_nand_init()  argument
97 	nand->ecc.mode = NAND_ECC_SOFT;  in board_nand_init()
98 	nand->cmd_ctrl = kb9202_nand_hwcontrol;  in board_nand_init()
99 	nand->dev_ready = kb9202_nand_ready;  in board_nand_init()
104 	/* setup nand flash access (allow ample margin) */  in board_nand_init()
105 	/* 4 wait states, 1 setup, 1 hold, 1 float for 8-bit device */  in board_nand_init()
110 	/* enable internal NAND controller */  in board_nand_init()
123 	/* disable output on pin connected to the busy line of the NAND */  in board_nand_init()