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spi: Add parameter for maximum write size
Some SPI controllers (e.g. Intel ICH) have a limit on the number of SPI
bytes that can be written at a time. Add this as a parameter so that
clients of the SPI interface can respect this value.
Signed-off-by: Simon Glass <sjg@chromium.org>
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@@ -49,10 +49,13 @@ |
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* |
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* bus: ID of the bus that the slave is attached to. |
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* cs: ID of the chip select connected to the slave. |
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+ * max_write_size: If non-zero, the maximum number of bytes which can |
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+ * be written at once, excluding command bytes. |
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*/ |
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struct spi_slave { |
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unsigned int bus; |
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unsigned int cs; |
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+ unsigned int max_write_size; |
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}; |
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/*----------------------------------------------------------------------- |