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| author | Ezequiel Garcia <ezequiel.garcia@free-electrons.com> | 2014-05-14 14:58:08 -0300 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2014-05-21 12:55:09 -0700 |
| commit | 5b3e507820c6e120bc2680c0d35f9d9d81fcb98d (patch) | |
| tree | 77cbc581cbdf88e0d91bb16e477718a5dce2b3d5 | |
| parent | eee0166d8ead9d719d794df3e66acd8f83630e05 (diff) | |
| download | linux-5b3e507820c6e120bc2680c0d35f9d9d81fcb98d.tar.gz linux-5b3e507820c6e120bc2680c0d35f9d9d81fcb98d.tar.bz2 linux-5b3e507820c6e120bc2680c0d35f9d9d81fcb98d.zip | |
mtd: nand: pxa3xx: Use ECC strength and step size devicetree binding
This commit adds support for the user to specify the ECC strength
and step size through the devicetree. We keep the previous behavior,
when there is no DT parameter provided.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| -rw-r--r-- | drivers/mtd/nand/pxa3xx_nand.c | 17 | ||||
| -rw-r--r-- | include/linux/platform_data/mtd-nand-pxa3xx.h | 3 |
2 files changed, 18 insertions, 2 deletions
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 3b66a6460d67..2a9add06c2d5 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -1519,8 +1519,13 @@ KEEP_CONFIG: } } - ecc_strength = chip->ecc_strength_ds; - ecc_step = chip->ecc_step_ds; + if (pdata->ecc_strength && pdata->ecc_step_size) { + ecc_strength = pdata->ecc_strength; + ecc_step = pdata->ecc_step_size; + } else { + ecc_strength = chip->ecc_strength_ds; + ecc_step = chip->ecc_step_ds; + } /* Set default ECC strength requirements on non-ONFI devices */ if (ecc_strength < 1 && ecc_step < 1) { @@ -1729,6 +1734,14 @@ static int pxa3xx_nand_probe_dt(struct platform_device *pdev) of_property_read_u32(np, "num-cs", &pdata->num_cs); pdata->flash_bbt = of_get_nand_on_flash_bbt(np); + pdata->ecc_strength = of_get_nand_ecc_strength(np); + if (pdata->ecc_strength < 0) + pdata->ecc_strength = 0; + + pdata->ecc_step_size = of_get_nand_ecc_step_size(np); + if (pdata->ecc_step_size < 0) + pdata->ecc_step_size = 0; + pdev->dev.platform_data = pdata; return 0; diff --git a/include/linux/platform_data/mtd-nand-pxa3xx.h b/include/linux/platform_data/mtd-nand-pxa3xx.h index a94147124929..ac4ea2e641c7 100644 --- a/include/linux/platform_data/mtd-nand-pxa3xx.h +++ b/include/linux/platform_data/mtd-nand-pxa3xx.h @@ -58,6 +58,9 @@ struct pxa3xx_nand_platform_data { /* use an flash-based bad block table */ bool flash_bbt; + /* requested ECC strength and ECC step size */ + int ecc_strength, ecc_step_size; + const struct mtd_partition *parts[NUM_CHIP_SELECT]; unsigned int nr_parts[NUM_CHIP_SELECT]; |