Hello,
ext Hemanth V wrote:
From: "Aaro Koskinen" <aaro.koskinen@xxxxxxxxx>
From: Eero Nurkkala <ext-eero.nurkkala@xxxxxxxxx>
When data is read through DMA, the last element must be read separately
through the RX register. It cannot be transferred by the DMA. For further
details see e.g. OMAP3430 TRM.
Could you provide the section number and the version of TRM you are
referring to.
Table 19-16 and section 19.6.2.5.1 in the public TRM.
Without the fix the driver causes extra clocks to be clocked to the
bus after DMA RX operations. This can cause interesting behaviour with
some devices.
Could you provide more details on the errors seen i.e is the transfer
aborted
There is an extra word, which a device can interpret as a command. Also
if the word size != command size the device can hang. Unless the device
hangs, you may not even notice anything.
A.
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