spi: rockchip: support 4bit words

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The hardware supports 4, 8 and 16bit spi words,
so add the missing support for 4bit words.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

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Emil Renner Berthing 2018-10-31 11:57:10 +01:00 • committed by Mark Brown

parent 01b59ce5da

commit 65498c6ae2

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1 changed files with 29 additions and 12 deletions

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drivers/spi/spi-rockchip.c

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