Dear Jeremy Moles, On Tue, 26 Aug 2014 19:18:52 -0400, Jeremy Moles wrote: > I have what I believe to be a stock/demo EDB9315A board here, and am in > the process of upgrading a client from their 2.6.21.5 kernel to 3.15 (or > thereabouts). > > So far, everything has gone fantastic, with 95% of the SoC on its > peripherals working without any issues. However, I _AM_ having an issue > with sound. At the most basic level, attempting to use sound in any way > generates the following messages: > > ep93xx-dma ep93xx-dma-m2p: coherent DMA mask is unset > ep93xx-i2s ep93xx-i2s: ASoC: ep93xx-i2s hw params failed: -12 > > Again, as far as I know (and the client insists) this machine is a stock > EDB9315A board (part of EP93XX mach). I've spent a good deal of time > looking through some of the DMA, SPI, I2S, and ASoC code, but have had > no luck. The previous 2.6.21.5 used a single monolithic patch that > managed to enable this device, but in the newer kernel it does not work. > > I know I'm not providing a great deal of information, but i wanted to > ask the lists in conjunction with my own debugging, hoping to possibly > solicit a vector of attack from someone experienced with the > architecture. :) Instead of linux-embedded@, you probably want to ask this question to the Linux ARM Kernel Mailing list (LAKML), plus the alsa-devel mailing list, plus the maintainers of the EP93xx platform in the kernel. This will make sure your question reaches the right persons. Best regards, Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
