spi: imx: keep dma request disabled before dma transfer setup

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[ Upstream commit 86d57d9c07 ]

Since sdma hardware configure postpone to transfer phase, have to disable
dma request before dma transfer setup because there is a hardware
limitation on sdma event enable(ENBLn) as below:

"It is thus essential for the Arm platform to program them before any DMA
 request is triggered to the SDMA, otherwise an unpredictable combination
 of channels may be started."

Signed-off-by: Carlos Song <carlos.song@nxp.com>
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Link: https://patch.msgid.link/20251024055320.408482-1-carlos.song@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Robin Gong 2025-10-24 13:53:20 +08:00 • committed by Greg Kroah-Hartman

parent a215b8db00

commit 5daaca0150

1 changed files with 11 additions and 4 deletions

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drivers/spi/spi-imx.c

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