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For TKT238285 hardware issue which may cause txfifo store data twice can only be caught on i.mx6dl, we use pio mode instead of DMA mode on i.mx6dl. Fixes: f62caccd (spi: spi-imx: add DMA support) Signed-off-by: Robin Gong <b38343@freescale.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
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