linux-kernel - [PATCH 0/2] spi: ar934x: fix transfer size and delays

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Date:   Wed, 22 Dec 2021 07:59:56 +0200
From:   Oskari Lemmela <oskari@...mela.net>
To:     Mark Brown <broonie@...nel.org>
Cc:     linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Oskari Lemmela <oskari@...mela.net>
Subject: [PATCH 0/2] spi: ar934x: fix transfer size and delays

Some of slow SPI devices can not handle 32 bits transfers or need
delay between words/transfers.

Series is tested with ATSAMD20J15 slave device which is running @8Mhz.
Limiting bits per word to 16 bits and adding delay between transfers,
gives slave device enough extra time to process reply.

Oskari Lemmela (2):
  spi: ar934x: fix transfer size
  spi: ar934x: fix transfer and word delays

 drivers/spi/spi-ar934x.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

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2.25.1