ipq40xx: add target

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Mathias Kresin <dev@kresin.me>
Signed-off-by: John Crispin <john@phrozen.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/target/linux/ipq40xx/patches-4.14/030-mtd-nand-Use-standard-large-page-OOB-layout-when-usi.patch b/target/linux/ipq40xx/patches-4.14/030-mtd-nand-Use-standard-large-page-OOB-layout-when-usi.patch
new file mode 100644
index 0000000000..479a890bb4
--- /dev/null
+++ b/target/linux/ipq40xx/patches-4.14/030-mtd-nand-Use-standard-large-page-OOB-layout-when-usi.patch
@@ -0,0 +1,47 @@
+From 882fd1577cbe7812ae3a48988180c5f0fda475ca Mon Sep 17 00:00:00 2001
+From: Miquel Raynal <miquel.raynal@free-electrons.com>
+Date: Sat, 26 Aug 2017 17:19:15 +0200
+Subject: [PATCH] mtd: nand: Use standard large page OOB layout when using
+ NAND_ECC_NONE
+
+Use the core's large page OOB layout functions when not reserving any
+space for ECC bytes in the OOB layout. Fix ->nand_ooblayout_ecc_lp()
+to return -ERANGE instead of a zero length in this case.
+
+Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
+Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
+---
+ drivers/mtd/nand/nand_base.c | 15 ++++++++++++++-
+ 1 file changed, 14 insertions(+), 1 deletion(-)
+
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -115,7 +115,7 @@ static int nand_ooblayout_ecc_lp(struct
+ 	struct nand_chip *chip = mtd_to_nand(mtd);
+ 	struct nand_ecc_ctrl *ecc = &chip->ecc;
+ 
+-	if (section)
++	if (section || !ecc->total)
+ 		return -ERANGE;
+ 
+ 	oobregion->length = ecc->total;
+@@ -4707,6 +4707,19 @@ int nand_scan_tail(struct mtd_info *mtd)
+ 			mtd_set_ooblayout(mtd, &nand_ooblayout_lp_hamming_ops);
+ 			break;
+ 		default:
++			/*
++			 * Expose the whole OOB area to users if ECC_NONE
++			 * is passed. We could do that for all kind of
++			 * ->oobsize, but we must keep the old large/small
++			 * page with ECC layout when ->oobsize <= 128 for
++			 * compatibility reasons.
++			 */
++			if (ecc->mode == NAND_ECC_NONE) {
++				mtd_set_ooblayout(mtd,
++						&nand_ooblayout_lp_ops);
++				break;
++			}
++
+ 			WARN(1, "No oob scheme defined for oobsize %d\n",
+ 				mtd->oobsize);
+ 			ret = -EINVAL;