From 5346c31e305a37d39f535cc0d5ae87d8b7e81230 Mon Sep 17 00:00:00 2001 From: Stefan Agner Date: Fri, 22 Jun 2018 17:19:47 +0200 Subject: [PATCH] mtd: nand: mxs_nand: use self init Instead of completing initialization via scan_bbt callback use NAND self init to initialize the GPMI (MXS) NAND controller. Suggested-by: Scott Wood Signed-off-by: Stefan Agner --- drivers/mtd/nand/Kconfig | 1 + drivers/mtd/nand/mxs_nand.c | 53 ++++++++++++++++++++----------------- drivers/mtd/nand/mxs_nand.h | 1 + 3 files changed, 31 insertions(+), 24 deletions(-) diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 94fbf89e4b..4db259fcb2 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -143,6 +143,7 @@ config NAND_MXC config NAND_MXS bool "MXS NAND support" depends on MX23 || MX28 || MX6 || MX7 + select SYS_NAND_SELF_INIT imply CMD_NAND select APBH_DMA select APBH_DMA_BURST if ARCH_MX6 || ARCH_MX7 diff --git a/drivers/mtd/nand/mxs_nand.c b/drivers/mtd/nand/mxs_nand.c index 5b7ad18c42..14d3210017 100644 --- a/drivers/mtd/nand/mxs_nand.c +++ b/drivers/mtd/nand/mxs_nand.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -47,6 +48,7 @@ #define MXS_NAND_BCH_TIMEOUT 10000 struct mxs_nand_info { + struct nand_chip chip; int cur_chip; uint32_t cmd_queue_len; @@ -972,20 +974,15 @@ static int mxs_nand_block_bad(struct mtd_info *mtd, loff_t ofs) } /* - * Nominally, the purpose of this function is to look for or create the bad - * block table. In fact, since the we call this function at the very end of - * the initialization process started by nand_scan(), and we doesn't have a - * more formal mechanism, we "hook" this function to continue init process. - * * At this point, the physical NAND Flash chips have been identified and * counted, so we know the physical geometry. This enables us to make some * important configuration decisions. * * The return value of this function propagates directly back to this driver's - * call to nand_scan(). Anything other than zero will cause this driver to + * board_nand_init(). Anything other than zero will cause this driver to * tear everything down and declare failure. */ -static int mxs_nand_scan_bbt(struct mtd_info *mtd) +int mxs_nand_setup_ecc(struct mtd_info *mtd) { struct nand_chip *nand = mtd_to_nand(mtd); struct mxs_nand_info *nand_info = nand_get_controller_data(nand); @@ -1047,8 +1044,7 @@ static int mxs_nand_scan_bbt(struct mtd_info *mtd) mtd->_block_markbad = mxs_nand_hook_block_markbad; } - /* We use the reference implementation for bad block management. */ - return nand_default_bbt(mtd); + return 0; } /* @@ -1177,7 +1173,6 @@ int mxs_nand_init_spl(struct nand_chip *nand) nand->cmd_ctrl = mxs_nand_cmd_ctrl; nand->dev_ready = mxs_nand_device_ready; nand->select_chip = mxs_nand_select_chip; - nand->scan_bbt = mxs_nand_scan_bbt; nand->read_byte = mxs_nand_read_byte; nand->read_buf = mxs_nand_read_buf; @@ -1192,27 +1187,22 @@ int mxs_nand_init_spl(struct nand_chip *nand) return 0; } -/*! - * This function is called during the driver binding process. - * - * @param pdev the device structure used to store device specific - * information that is used by the suspend, resume and - * remove functions - * - * @return The function always returns 0. - */ -int board_nand_init(struct nand_chip *nand) +void board_nand_init(void) { + struct mtd_info *mtd; struct mxs_nand_info *nand_info; + struct nand_chip *nand; int err; nand_info = malloc(sizeof(struct mxs_nand_info)); if (!nand_info) { printf("MXS NAND: Failed to allocate private data\n"); - return -ENOMEM; + return; } memset(nand_info, 0, sizeof(struct mxs_nand_info)); + nand = &nand_info->chip; + mtd = nand_to_mtd(nand); err = mxs_nand_alloc_buffers(nand_info); if (err) goto err1; @@ -1231,13 +1221,19 @@ int board_nand_init(struct nand_chip *nand) nand->dev_ready = mxs_nand_device_ready; nand->select_chip = mxs_nand_select_chip; nand->block_bad = mxs_nand_block_bad; - nand->scan_bbt = mxs_nand_scan_bbt; nand->read_byte = mxs_nand_read_byte; nand->read_buf = mxs_nand_read_buf; nand->write_buf = mxs_nand_write_buf; + /* first scan to find the device and get the page size */ + if (nand_scan_ident(mtd, CONFIG_SYS_MAX_NAND_DEVICE, NULL)) + goto err2; + + if (mxs_nand_setup_ecc(mtd)) + goto err2; + nand->ecc.read_page = mxs_nand_ecc_read_page; nand->ecc.write_page = mxs_nand_ecc_write_page; nand->ecc.read_oob = mxs_nand_ecc_read_oob; @@ -1249,12 +1245,21 @@ int board_nand_init(struct nand_chip *nand) nand->ecc.size = 512; nand->ecc.strength = 8; - return 0; + /* second phase scan */ + err = nand_scan_tail(mtd); + if (err) + goto err2; + + err = nand_register(0, mtd); + if (err) + goto err2; + + return; err2: free(nand_info->data_buf); free(nand_info->cmd_buf); err1: free(nand_info); - return err; + return; } diff --git a/drivers/mtd/nand/mxs_nand.h b/drivers/mtd/nand/mxs_nand.h index 9bb7148d98..379ed24f05 100644 --- a/drivers/mtd/nand/mxs_nand.h +++ b/drivers/mtd/nand/mxs_nand.h @@ -8,3 +8,4 @@ */ int mxs_nand_init_spl(struct nand_chip *nand); +int mxs_nand_setup_ecc(struct mtd_info *mtd); -- 2.25.1