Commit 9ae84fe8 authored by Liu Shuo's avatar Liu Shuo Committed by David Woodhouse

mtd: fsl_elbc_nand: set Nand flash page address to FBAR and FPAR correctly

If we use the Nand flash chip whose number of pages in a block is greater
than 64(for large page), we must treat the low bit of FBAR as being the
high bit of the page address due to the limitation of FCM, it simply uses
the low 6-bits (for large page) of the combined block/page address as the
FPAR component, rather than considering the actual block size.
Signed-off-by: default avatarLiu Shuo <b35362@freescale.com>
Signed-off-by: default avatarJerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: default avatarTang Yuantian <b29983@freescale.com>
Signed-off-by: default avatarLi Yang <leoli@freescale.com>
Acked-by: default avatarScott Wood <scottwood@freescale.com>
Signed-off-by: default avatarArtem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 556f0635
...@@ -166,15 +166,22 @@ static void set_addr(struct mtd_info *mtd, int column, int page_addr, int oob) ...@@ -166,15 +166,22 @@ static void set_addr(struct mtd_info *mtd, int column, int page_addr, int oob)
elbc_fcm_ctrl->page = page_addr; elbc_fcm_ctrl->page = page_addr;
out_be32(&lbc->fbar,
page_addr >> (chip->phys_erase_shift - chip->page_shift));
if (priv->page_size) { if (priv->page_size) {
/*
* large page size chip : FPAR[PI] save the lowest 6 bits,
* FBAR[BLK] save the other bits.
*/
out_be32(&lbc->fbar, page_addr >> 6);
out_be32(&lbc->fpar, out_be32(&lbc->fpar,
((page_addr << FPAR_LP_PI_SHIFT) & FPAR_LP_PI) | ((page_addr << FPAR_LP_PI_SHIFT) & FPAR_LP_PI) |
(oob ? FPAR_LP_MS : 0) | column); (oob ? FPAR_LP_MS : 0) | column);
buf_num = (page_addr & 1) << 2; buf_num = (page_addr & 1) << 2;
} else { } else {
/*
* small page size chip : FPAR[PI] save the lowest 5 bits,
* FBAR[BLK] save the other bits.
*/
out_be32(&lbc->fbar, page_addr >> 5);
out_be32(&lbc->fpar, out_be32(&lbc->fpar,
((page_addr << FPAR_SP_PI_SHIFT) & FPAR_SP_PI) | ((page_addr << FPAR_SP_PI_SHIFT) & FPAR_SP_PI) |
(oob ? FPAR_SP_MS : 0) | column); (oob ? FPAR_SP_MS : 0) | column);
......
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