raw/gpmi-nand/gpmi-nand.c

19 #include "gpmi-nand.h"
24 #define GPMI_NAND_GPMI_REGS_ADDR_RES_NAME  "gpmi-nand"
243 	struct nand_chip *chip = &this->nand;
245 	struct nand_device *nand = &chip->base;
246 	struct nand_ecc_props *conf = &nand->ecc.ctx.conf;
261 	if (!nand_ecc_is_strong_enough(nand))
272 	struct nand_chip *chip = &this->nand;
301  * If we can get the ECC information from the nand chip, we do not
311 	struct nand_chip *chip = &this->nand;
324 			"unsupported nand chip. ecc bits : %d, ecc size : %d\n",
338 			"unsupported nand chip. ecc size: %d, oob size : %d\n",
373 	 *	P': the nand chip's page size.
374 	 *	O : the nand chip's oob size.
439 	struct mtd_info	*mtd = nand_to_mtd(&this->nand);
452 	struct nand_chip *chip = &this->nand;
461 	/* sanity check for the minimum ecc nand required */
467 	/* check if platform can support this nand */
496 	/* nand required but changing ecc page layout  */
580 	struct mtd_info *mtd = nand_to_mtd(&this->nand);
693 	struct nand_chip *chip = &this->nand;
694 	struct mtd_info *mtd = nand_to_mtd(&this->nand);
712 	/* for large oob nand */
720 	/* otherwise use the minimum ecc nand chip required */
768  *     The GPMI-clock is the internal clock in the gpmi nand controller.
769  *     If you set 100MHz to gpmi nand controller, the GPMI-clock's period
772  * <2> Secondly, we should know what's the frequency on the nand chip pins.
773  *     The frequency on the nand chip pins is derived from the GPMI-clock.
778  *         F  : the frequency on the nand chip pins.
783  * <3> Thirdly, when the frequency on the nand chip pins is above 33MHz,
784  *     the nand EDO(extended Data Out) timing could be applied.
786  *     The feedback read strobe can be delayed to support the nand EDO timing
813  *  4.1) From the aspect of the nand chip pins:
821  *  4.2) From the aspect of the GPMI nand controller:
1012 	/* We use the DMA channel 0 to access all the nand chips. */
1328 	struct mtd_info *mtd = nand_to_mtd(&this->nand);
2034 	struct nand_chip *chip = &this->nand;
2089 	struct nand_chip *chip = &this->nand;
2154 	struct nand_chip *chip = &this->nand;
2254 	struct nand_chip *chip = &this->nand;
2335 	int chip = this->nand.cur_cs;
2379 		| BF_GPMI_CTRL0_CS(this->nand.cur_cs, this)
2408 		| BF_GPMI_CTRL0_CS(this->nand.cur_cs, this)
2454 		| BF_GPMI_CTRL0_CS(this->nand.cur_cs, this)
2663 	struct nand_chip *chip = &this->nand;
2668 	mtd->name		= "gpmi-nand";
2719 	{ .compatible = "fsl,imx23-gpmi-nand", .data = &gpmi_devdata_imx23, },
2720 	{ .compatible = "fsl,imx28-gpmi-nand", .data = &gpmi_devdata_imx28, },
2721 	{ .compatible = "fsl,imx6q-gpmi-nand", .data = &gpmi_devdata_imx6q, },
2722 	{ .compatible = "fsl,imx6sx-gpmi-nand", .data = &gpmi_devdata_imx6sx, },
2723 	{ .compatible = "fsl,imx7d-gpmi-nand", .data = &gpmi_devdata_imx7d,},
2783 	struct nand_chip *chip = &this->nand;
2857 		.name = "gpmi-nand",