diff options
Diffstat (limited to 'target/linux/mvebu/patches-3.14/012-pxa3xx_nand_use_ecc_info_from_dt.patch')
| -rw-r--r-- | target/linux/mvebu/patches-3.14/012-pxa3xx_nand_use_ecc_info_from_dt.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-3.14/012-pxa3xx_nand_use_ecc_info_from_dt.patch b/target/linux/mvebu/patches-3.14/012-pxa3xx_nand_use_ecc_info_from_dt.patch new file mode 100644 index 0000000000..8b5cc5bb3c --- /dev/null +++ b/target/linux/mvebu/patches-3.14/012-pxa3xx_nand_use_ecc_info_from_dt.patch @@ -0,0 +1,57 @@ +From 5b3e507820c6e120bc2680c0d35f9d9d81fcb98d Mon Sep 17 00:00:00 2001 +From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> +Date: Wed, 14 May 2014 14:58:08 -0300 +Subject: 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> + +--- a/drivers/mtd/nand/pxa3xx_nand.c ++++ b/drivers/mtd/nand/pxa3xx_nand.c +@@ -1520,8 +1520,13 @@ 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) { +@@ -1730,6 +1735,14 @@ static int pxa3xx_nand_probe_dt(struct p + 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; +--- 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]; + |