raw/gpmi-nand/gpmi-nand.c

3  * Freescale GPMI NAND Flash Driver
19 #include "gpmi-nand.h"
20 #include "gpmi-regs.h"
23 /* Resource names for the GPMI NAND driver. */
24 #define GPMI_NAND_GPMI_REGS_ADDR_RES_NAME  "gpmi-nand"
46 	 * SFTRST needs 3 GPMI clocks to settle, the reference manual  in clear_poll_bit()
202 	dev_err(this->dev, "Show GPMI registers :\n");  in gpmi_dump_info()
572  * <1> Firstly, we should know what's the GPMI-clock means.
573  *     The GPMI-clock is the internal clock in the gpmi nand controller.
574  *     If you set 100MHz to gpmi nand controller, the GPMI-clock's period
575  *     is 10ns. Mark the GPMI-clock's period as GPMI-clock-period.
578  *     The frequency on the nand chip pins is derived from the GPMI-clock.
584  *         G  : the GPMI clock, such as 100MHz.
590  *     The GPMI implements a feedback read strobe to sample the read data.
624  *                   tRP = (GPMI-clock-period) * DATA_SETUP
626  *  4.2) From the aspect of the GPMI nand controller:
630  *            if (GPMI-clock-period > DLL_THRETHOLD)
631  *                   RP = GPMI-clock-period / 2;
633  *                   RP = GPMI-clock-period;
635  *            Set the HW_GPMI_CTRL1:HALF_PERIOD if GPMI-clock-period
756 	/* Wait 64 clock cycles before using the GPMI after enabling the DLL */  in gpmi_nfc_apply_timings()
778 	/* Only MX6 GPMI controller can reach EDO timings */  in gpmi_setup_interface()
1579  * The tricky part in the GPMI/BCH controller is that it stores ECC bits
1586  * of the layout used by the GPMI controller.
1664  * The tricky part in the GPMI/BCH controller is that it stores ECC bits
1671  * of the layout used by the GPMI controller.
1698 	 * beginning of the page, as imposed by the GPMI layout.  in gpmi_ecc_write_page_raw()
2448 	mtd->name		= "gpmi-nand";  in gpmi_nand_init()
2500 		.compatible = "fsl,imx23-gpmi-nand",
2503 		.compatible = "fsl,imx28-gpmi-nand",
2506 		.compatible = "fsl,imx6q-gpmi-nand",
2509 		.compatible = "fsl,imx6sx-gpmi-nand",
2512 		.compatible = "fsl,imx7d-gpmi-nand",
2613 	/* re-init the GPMI registers */  in gpmi_pm_resume()
2616 		dev_err(this->dev, "Error setting GPMI : %d\n", ret);  in gpmi_pm_resume()
2656 		.name = "gpmi-nand",
2666 MODULE_DESCRIPTION("i.MX GPMI NAND Flash Controller Driver");