On Sat, Nov 14, 2015 at 04:39:51PM +0900, YounJaeRho wrote: > This patch fix mt7621 nand driver for linux-3.18 kernel.mt7621 share PIN > between NAND,SDXC,SPI.so you should pinctrl in dts file that only one of them > is used at a time. > SQUASH supportJFFS2 support (no hardware ECC support which is disabled by > `CONFIG_TARGET_ROOTFS_JFFS2` )
Using JFFS2 on NAND is a bit whacky, you should probably use UBI. If the bootloader doesn't support UBI, you should have a seperate kernel partition and store both, rootfs and overlayfs in UBI. See https://dev.openwrt.org/browser/trunk/target/linux/lantiq/image/Makefile for a bunch of good examples. > > Signed-off-by: YounJae Rho <luxf...@live.com>------ > a/drivers/mtd/nand/mtk_nand.c > +++ b/drivers/mtd/nand/mtk_nand.c > @@ -42,6 +42,9 @@ > #include "bmt.h" > #include "partition.h" > > +#define NAND_MAX_OOBSIZE 640 > +#define NAND_MAX_PAGESIZE 8192 > + > unsigned int CFG_BLOCKSIZE; > > static int shift_on_bbt = 0; > @@ -1422,9 +1425,7 @@ mtk_nand_erase_hw(struct mtd_info *mtd, > { > struct nand_chip *chip = (struct nand_chip *)mtd->priv; > > - chip->erase_cmd(mtd, page); > - > - return chip->waitfunc(mtd, chip); > + return chip->erase(mtd, chip); > } > > static int > @@ -2092,7 +2093,11 @@ mtk_nand_probe(struct platform_device *p > > // For BMT, we need to revise driver architecture > nand_chip->write_page = mtk_nand_write_page; > + #if defined(CONFIG_TARGET_ROOTFS_JFFS2) > + nand_chip->ecc.write_oob = NULL; > + #else > nand_chip->ecc.write_oob = mtk_nand_write_oob; > + #endif > nand_chip->block_markbad = mtk_nand_block_markbad; // need to add > nand_get_device()/nand_release_device(). > // nand_chip->erase = mtk_nand_erase; > // nand_chip->read_page = mtk_nand_read_page; > @@ -2175,7 +2180,7 @@ mtk_nand_probe(struct platform_device *p > nand_chip->pagemask = (nand_chip->chipsize >> nand_chip->page_shift) - > 1; > nand_chip->phys_erase_shift = ffs(mtd->erasesize) - 1; > nand_chip->chip_shift = ffs(nand_chip->chipsize) - > 1;//0x1C;//ffs(nand_chip->chipsize) - 1; > - nand_chip->oob_poi = nand_chip->buffers->databuf + mtd->writesize; > + nand_chip->oob_poi = NULL; > nand_chip->badblockpos = 0; > > if (devinfo.pagesize == 4096) > > > _______________________________________________ > openwrt-devel mailing list > openwrt-devel@lists.openwrt.org > https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
