spi: bcm-qspi: Handle lack of MSPI_REV offset

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Older MIPS chips have a QSPI/MSPI controller that does not have the
MSPI_REV offset, reading from that offset will cause a bus error. Match
their compatible string and do not perform a read from that register in
that case.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Link: https://lore.kernel.org/r/20200420190853.45614-4-kdasu.kdev@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Florian Fainelli 2020-04-20 15:08:47 -04:00 • committed by Mark Brown

parent 66eb228988

commit 3a01f04d74

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drivers/spi/spi-bcm-qspi.c

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