* [PATCH] SPI: IMX5/6: Set inactive state of SPI clock (SCLK CTL) according to SPI clock polarity
@ 2012-08-27 13:18 Knut Wohlrab
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From: Knut Wohlrab @ 2012-08-27 13:18 UTC (permalink / raw)
To: linux-arm-kernel
For our SPI device we need a SPI clock with active low polarity and a a
high inactive state.
We add the setting of the inactive state ECSPIx_CONFIGREG:SCLK CTL
according to the clock polarity ECSPIx_CONFIGREG:SCLK POL:
Device tree _without_ "spi-cpol" = 0 = clock active high polarity =
inactive state low
Device tree with "spi-cpol" = 1 = clock active low polarity = inactive
state high
Are there real world examples for a need of an individual setting of
clock polarity/inactive state?
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2012-08-27 13:18 [PATCH] SPI: IMX5/6: Set inactive state of SPI clock (SCLK CTL) according to SPI clock polarity Knut Wohlrab
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