From: Jesse Forgues <jesseco...@gmail.com> Reply-To: "beagleboard@googlegroups.com" <beagleboard@googlegroups.com> Date: Wednesday, June 18, 2014 at 12:13 PM To: "beagleboard@googlegroups.com" <beagleboard@googlegroups.com> Subject: Re: [beagleboard] Changing BB-BONE-AUDI-02-00A0 from McASP AXR2 to AXR3
> For some reason we need to have the serializer the complete opposite of yours! > > For example you had: > serial-dir = < /* 0: INACTIVE, 1: TX, 2: RX */ > > 1 0 2 0 > > 0 0 0 0 > > 0 0 0 0 > > 0 0 0 0 > > > > We needed to use: > > serial-dir = < /* 0: INACTIVE, 1: TX, 2: RX */ > > 2 0 1 0 > > 0 0 0 0 > > 0 0 0 0 > > 0 0 0 0 > > > > But perhaps its because above that we also had different settings: > > > > you had (that 8 must be a typo): 8 just means the pull-up is disabled, but I think it will work better with the pull-up enabled. > 0x1ac 0x20 /* mcasp0_ahclkx, INPUT | MODE0 */ > > 0x19c 0x22 /* mcasp0_axr2, INPUT | MODE2 */ > > 0x194 0x20 /* mcasp0_fsx, INPUT | MODE0 */ > > 0x198 0x08 /* mcasp0_axr0, OUTPUT | MODE0 */ > > 0x190 0x20 /* mcasp0_aclkx, INPUT | MODE0 */ > > We used (which worked): > > 0x1ac 0x00 /* mcasp0_ahclkx, OUTPUT | MODE0 */ > > 0x19c 0x22 /* mcasp0_axr2, INPUT | MODE2 */ > > 0x194 0x20 /* mcasp0_fsx, INPUT | MODE0 */ > > 0x198 0x20 /* mcasp0_axr0, INPUT | MODE0 */ > > 0x190 0x20 /* mcasp0_aclkx, INPUT | MODE0 */ Looking at the Audio Cape RevB schematic and the TLV320AIC3104 datasheet. Pin 4 of the of the codec is DIN (Pin is defined as an input) is connected to P9_30 which is AXR0, so this pin on BBB should be defined as an output in DTS, but you have it defined as an input. Also, since AXR0 is defined as an output, then the serializer above should be defined as TX, but you have it defined as RX. What am I missing? Pin1 of the codec is MCLK which is defined as an input, so MCASP0_AHCLKX should be defined as an output (My bad) > That said we are off the AudioCape now with the extra pins and using an XMOS > based USB Streamer ADC/DAC for I2S testing back and forth and it is working > fantastic! > > > > Here are the final values we used for AXR0-3, 4 I2S lines, 4 channels in, 4 > channels out (and attached the file) > > We have only tested 2 channels in and 4 out however. > > > > /* > > * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/ > > * > > * This program is free software; you can redistribute it and/or modify > > * it under the terms of the GNU General Public License version 2 as > > * published by the Free Software Foundation. > > */ > > /dts-v1/; > > /plugin/; > > > > / { > > compatible = "ti,beaglebone", "ti,beaglebone-black"; > > > > /* identification */ > > part-number = "BB-BONE-AUDI-04"; > > version = "00A0", "A0"; > > > > /* state the resources this cape uses */ > > exclusive-use = > > /* the pin header uses */ > > "P9.25", /* mcasp0: mcasp0_ahclkx */ > > "P9.29", /* mcasp0: mcasp0_fsx */ > > "P9.31", /* mcasp0: mcasp0_aclkx */ > > "P9.30", /* mcasp0: mcasp0_axr0 */ > > "P9.41", /* mcasp0: mcasp0_axr1 */ > > "P9.28", /* mcasp0: mcasp0_axr2 */ > > "P9.27", /* mcasp0: mcasp0_axr3 */ > > /* the hardware ip uses */ > > "mcasp0"; > > > > fragment@0 { > > target = <&am33xx_pinmux>; > > __overlay__ { > > > > i2c2_pins: pinmux_i2c2_pins { > > pinctrl-single,pins = < > > 0x150 0x72 /*spi0_scl.i2c2_sda,SLEWCTRL_SLOW | INPUT_PULLUP |MODE2*/ > > 0x154 0x72 /*spi0_d0.i2c2_scl,SLEWCTRL_SLOW | INPUT_PULLUP | MODE2*/ > >> >; > > }; > > > > bone_audio_cape_audio_pins: pinmux_bone_audio_cape_audio_pins { > > pinctrl-single,pins = < > > 0x1ac 0x00 /* mcasp0_ahclkx, OUTPUT | MODE0 */ > > 0x194 0x20 /* mcasp0_fsx, INPUT | MODE0 */ > > 0x190 0x20 /* mcasp0_aclkx, INPUT | MODE0 */ > > 0x198 0x20 /* mcasp0_axr0, INPUT | MODE0 */ > > 0x1a8 0x20 /* mcasp0_axr1, INPUT | MODE0 */ > > 0x19c 0x22 /* mcasp0_axr2, INPUT | MODE2 */ > > 0x1a4 0x22 /* mcasp0_axr3, INPUT | MODE2 */ > >> >; > > }; > > }; > > }; > > > > fragment@1 { > > target = <&i2c2>; > > __overlay__ { > > #address-cells = <1>; > > #size-cells = <0>; > > clock-frequency = <100000>; > > status = "okay"; > > pinctrl-names = "default"; > > pinctrl-0 = <&i2c2_pins>; > > > > > > tlv320aic3x: tlv320aic3x@18 { > > compatible = "ti,tlv320aic3x"; > > reg = <0x18>; > > status = "okay"; > > }; > > }; > > }; > > > > fragment@2 { > > target = <&mcasp0>; > > __overlay__ { > > pinctrl-names = "default"; > > pinctrl-0 = <&bone_audio_cape_audio_pins>; > > > > status = "okay"; > > > > op-mode = <0>; /* MCASP_IIS_MODE */ > > tdm-slots = <2>; > > num-serializer = <16>; > > serial-dir = < /* 0: INACTIVE, 1: TX, 2: RX */ > > 2 2 1 1 > > 0 0 0 0 > > 0 0 0 0 > > 0 0 0 0 > >> >; > > tx-num-evt = <1>; > > rx-num-evt = <1>; > > }; > > }; > > > > fragment@3 { > > target = <&ocp>; > > __overlay__ { > > sound { > > compatible = "ti,da830-evm-audio"; > > ti,model = "DA830 EVM"; > > ti,audio-codec = <&tlv320aic3x>; > > ti,mcasp-controller = <&mcasp0>; > > ti,codec-clock-rate = <12000000>; > > ti,audio-routing = > > "Headphone Jack", "HPLOUT", > > "Headphone Jack", "HPROUT", > > "LINE1L", "Line In", > > "LINE1R", "Line In"; > > }; > > }; > > > > }; > > }; > > > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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