Commit ef73c7da authored by Marcus Folkesson's avatar Marcus Folkesson Committed by Miquel Raynal
Browse files

mtd: nand: davinci: add support for on-die ECC engine type 



Some chips, e.g. Micron MT29F1G08ABBFAH4, has a mandatory on-die ECC.
Add "on-die" as ECC engine type in order to be compatible with those.

Signed-off-by: default avatarMarcus Folkesson <marcus.folkesson@gmail.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
parent e0a4f50f

drivers/mtd/nand/raw/davinci_nand.c

+4 −0
Original line number Diff line number Diff line
@@ -66,6 +66,7 @@ struct davinci_nand_pdata { 


	/* none  == NAND_ECC_ENGINE_TYPE_NONE (strongly *not* advised!!)

	 * soft  == NAND_ECC_ENGINE_TYPE_SOFT

	 * on-die == NAND_ECC_ENGINE_TYPE_ON_DIE

	 * else  == NAND_ECC_ENGINE_TYPE_ON_HOST, according to ecc_bits

	 *

	 * All DaVinci-family chips support 1-bit hardware ECC.
@@ -525,6 +526,8 @@ nand_davinci_get_pdata(struct platform_device *pdev) 
				pdata->engine_type = NAND_ECC_ENGINE_TYPE_SOFT;

			if (!strncmp("hw", mode, 2))

				pdata->engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST;

			if (!strncmp("on-die", mode, 6))

				pdata->engine_type = NAND_ECC_ENGINE_TYPE_ON_DIE;

		}

		if (!device_property_read_u32(&pdev->dev,

					      "ti,davinci-ecc-bits", &prop))
@@ -580,6 +583,7 @@ static int davinci_nand_attach_chip(struct nand_chip *chip) 


	switch (chip->ecc.engine_type) {

	case NAND_ECC_ENGINE_TYPE_NONE:

	case NAND_ECC_ENGINE_TYPE_ON_DIE:

		pdata->ecc_bits = 0;

		break;

	case NAND_ECC_ENGINE_TYPE_SOFT: