mtd: rawnand: qcom: Update code word value for raw read
authorMd Sadre Alam <mdalam@codeaurora.org>
Tue, 7 Sep 2021 07:05:57 +0000 (12:35 +0530)
committerMiquel Raynal <miquel.raynal@bootlin.com>
Tue, 14 Sep 2021 17:36:00 +0000 (19:36 +0200)
commitf60f5741002b9fde748cff65fd09bd6222c5db0c
tree4f459c37980963a2bbb3824295ffcf833b45d953
parent6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f
mtd: rawnand: qcom: Update code word value for raw read

From QPIC V2 onwards there is a separate register to read
last code word "QPIC_NAND_READ_LOCATION_LAST_CW_n".

qcom_nandc_read_cw_raw() is used to read only one code word
at a time. If we will configure number of code words to 1 in
in QPIC_NAND_DEV0_CFG0 register then QPIC controller thinks
its reading the last code word, since from QPIC V2 onwards
we are having separate register to read the last code word,
we have to configure "QPIC_NAND_READ_LOCATION_LAST_CW_n"
register to fetch data from controller buffer to system
memory.

Fixes: 503ee5aad430 ("mtd: rawnand: qcom: update last code word register")
Cc: stable@kernel.org
Signed-off-by: Md Sadre Alam <mdalam@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/1630998357-1359-1-git-send-email-mdalam@codeaurora.org
drivers/mtd/nand/raw/qcom_nandc.c