Re: [PATCH 1/2] spi: spi-mem: Add the spi_set_xfer_bpw function
From: Mark Brown
Date: Fri Sep 28 2018 - 09:26:17 EST
On Fri, Sep 28, 2018 at 09:18:33AM +0200, Boris Brezillon wrote:
> I might be wrong, but that's not my understanding of ->bits_per_word.
> To me, it's something that you can use when your *device* (not
> controller) expects non-byte aligned words [1]. The spi-mem protocol is
Yes, bits per word is a device setting. SPI devices can have control
protocols that have words larger than a byte with a fixed byte order,
many controllers do the required byte swapping.
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