Hi, thanks for answering. 17 Nisan 2017 Pazartesi 11:09:56 UTC+3 tarihinde Maxime Ripard yazdı: > > > I'm trying to get I2S output on Allwinner R8 (actually an NTC GR8). > > Soo, not an R8 ? :) >
I thought it was more appropriate to say R8 since GR8 is based on it. Sorry about the confusion that I inadvertently created. I'm using GR8 on a Chip Pro board. Could you paste somewhere your overlay, and tell how you apply it? > Sure, I've made available all the files at https://github.com/hazarkarabay/gr8-i2s I'm using: 4.4.30 kernel from https://github.com/NextThingCo/CHIP-linux/tree/nextthing/4.4/chip Compiled with defconfig + CONFIG_OF_CONFIGFS (for enabling overlay support) Files mentioned below are relative to my git repository. - ntc-gr8-crumb-modded.dts as my device tree, defined at kernel compile time (original device tree has an error related I2S MCLK pin and I can't override it from an overlay - my overlay files has related lines for it but not worked until I compile a kernel with fixed device tree) - pcm1798.c as my simple-audio-card based driver. - overlays/i2s-normal.dtbo used as device tree overlay (source available as overlays/i2s-normal.dts) I'm applying the overlay using following commands: modprobe snd-soc-pcm1798 mkdir -p /sys/kernel/config/device-tree/overlays/i2s-normal cat i2s-normal.dtbo > /sys/kernel/config/device-tree/overlays/i2s-normal/ dtbo dmesg should show "pcm1798-hifi <-> 1c22400.i2s mapping ok". > If you want to poke around, this is where the polarity of the clocks > is supposed to be handled: > http://lxr.free-electrons.com/source/sound/soc/sunxi/sun4i-i2s.c#L296 > > I will check. Thanks. -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
