ndufresne: i tried dumping data onto disk after mapping mm21 onto something normal and all i get is a file with 0x8080, any ideas? no matter the test pattern the output is always the same dafna2[m]: o/ any ideas? what do you mean by 0x8080? the output file that i get is 3mb file filled with 0x8080, as od told me i'm running media-next tree + dtsi binding patch that i stole from eballetbo's linux tree the scp is running firmware that i copied over from chromeos recovery medium and you have a mt8183 ? I have mt8173 and the codec driver does not work with debian interrupt signal does not arrive, so I am pritty stuck as well dafna2[m]: yea i do have mt8183 device running mainline linux isn't mt8173's vdec stateful?