Aaro Koskinen <[email protected]> writes:
> From: Eero Nurkkala <[email protected]>
>
> 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.
>
> 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.
I was hit by this with stlc45xx and earlier versions of Juuso's patch at
least fixed the problem.
I will test this patch as soon as I get N800 boot with latest
linux-omap, now I only get this:
<6>JFFS2 version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc.
<6>JFFS2 version 2.2. (NAND) (SUMMARY) © 2001-2006 Red H
<6>msgmni has been set to 247
<6>io scheduler noop registered (default)
<6>omapfb: ls041y3 rev 87 LCD detected, 0 data lines d
<6>serial8250.0: ttyS0 at MMIO 0x4806a000 (irq = 72) is a ST16654
<6>serial8250.0: ttyS1 at MMIO 0x4806e000 (irq = 74) is a ST16654
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--
Kalle Valo
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