diff options
| author | Robin Gong <yibin.gong@nxp.com> | 2025-10-24 13:53:20 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-12 18:37:19 +0100 |
| commit | 5daaca0150db853253d53a812914b319e8439b34 (patch) | |
| tree | 12b20d0da9d743b28f507e5a64d7e673106bd5c7 /include/net/aligned_data.h | |
| parent | a215b8db00b5133fa77c569e3779ab0987d21c9d (diff) | |
spi: imx: keep dma request disabled before dma transfer setup
[ Upstream commit 86d57d9c07d54e8cb385ffe800930816ccdba0c1 ]
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>
Diffstat (limited to 'include/net/aligned_data.h')
0 files changed, 0 insertions, 0 deletions