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mtd: nand: pxa3xx: Use ECC strength and step size devicetree binding

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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>
This commit is contained in:
Ezequiel Garcia
2014-05-14 14:58:08 -03:00
committed by Brian Norris
parent eee0166d8e
commit 5b3e507820
2 changed files with 18 additions and 2 deletions
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17
drivers/mtd/nand/pxa3xx_nand.c
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@@ -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;