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| author | Sivaprakash Murugesan <sivaprak@codeaurora.org> | 2020-06-12 09:58:16 +0200 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2020-06-26 08:35:10 +0200 |
| commit | cb272395dceef1652247dad08a50ed4153ffbd43 (patch) | |
| tree | 56e4e3eb12f7f773e2ce81c8556b4190822d209e /LICENSES | |
| parent | mtd: rawnand: qcom: avoid write to unavailable register (diff) | |
| download | linux-cb272395dceef1652247dad08a50ed4153ffbd43.tar.xz linux-cb272395dceef1652247dad08a50ed4153ffbd43.zip | |
mtd: rawnand: qcom: set BAM mode only if not set already
BAM is DMA controller on QCOM ipq platforms, BAM mode on NAND driver
is set by writing BAM_MODE_EN bit on NAND_CTRL register.
NAND_CTRL is an operational register and in BAM mode operational
registers are read only.
So, before enabling BAM mode by writing the NAND_CTRL register, check
if BAM mode was already enabled by the bootloader, and enable BAM mode
only if it is not enabled already.
Signed-off-by: Sivaprakash Murugesan <sivaprak@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/1591948696-16015-3-git-send-email-sivaprak@codeaurora.org
Diffstat (limited to 'LICENSES')
0 files changed, 0 insertions, 0 deletions