1. J1 (the RTC connector) provides 2 I2C pins and one GPIO
2. J7 (I2S connector on the C2) provides 5 I2S pins. Can they be used as GPIO pins?
What about pins
8, 10, 26, 31, 35, 37 No connection
. Can those pins be accessed somehow?Thanks
8, 10, 26, 31, 35, 37 No connection
. Can those pins be accessed somehow?I am working to utilize the GPIO j7 Pins as well. i know the ODLib says you can use the j7, but i havent been able to access them in a meaningful way yet.2. J7 (I2S connector on the C2) provides 5 I2S pins. Can they be used as GPIO pins?
Code: Select all
sudo apt-get install device-tree-compiler
fdtdump /media/boot/meson64_odroidc2.dtb
to list the device tree nodes. The I2S relevant nodes are:
Code: Select all
I2S {
compatible = "amlogic, aml-i2s-dai";
#sound-dai-cells = <0x00000000>;
resets = <0x0000000d 0x0000000d 0x0000000d 0x0000000d 0x0000000d 0x0000000d 0x00000463 0x5f627566 0x6c6b5f6d 0x6f320061 0x65725f72 0x6576656c 0x6e000000 0x0000000d 0x00000003 0x30006d63 0x0000004c 0x00000052 0x6932735f 0x00000003 0x6769632c 0x00000003>;
reset-names = "top_glue", "aud_buf", "i2s_out", "amclk_measure", "aififo2", "aud_mixer", "mixer_reg", "adc", "top_level", "aoclk", "aud_in";
clocks = <0x0000000d 0x00000003 0x30006d63 0x0000004c>;
clock-names = "mpll0", "mclk";
linux,phandle = <0x00000032>;
phandle = <0x00000032>;
};
i2s_platform {
compatible = "amlogic, aml-i2s";
linux,phandle = <0x00000031>;
phandle = <0x00000031>;
};
status = "disabled"
.
Code: Select all
# fdtput /media/boot/meson64_odroidc2.dtb /I2S status disabled
# fdtget /media/boot/meson64_odroidc2.dtb /I2S status
127
# fdtput /media/boot/meson64_odroidc2.dtb /i2s_platform status disabled
# fdtget /media/boot/meson64_odroidc2.dtb /i2s_platform status
127
dmesg | grep -i i2s
Code: Select all
root@kbd:/sys/class/gpio# echo 128 > /sys/class/gpio/export
-su: echo: write error: Invalid argument
root@kbd:/sys/class/gpio# echo 130 > /sys/class/gpio/export
root@kbd:/sys/class/gpio# echo out > /sys/class/gpio/gpio130/direction
root@kbd:/sys/class/gpio# echo 0 > /sys/class/gpio/gpio130/value
root@kbd:/sys/class/gpio# echo 1 > /sys/class/gpio/gpio130/value
root@kbd:/sys/class/gpio# echo 132 > /sys/class/gpio/export
root@kbd:/sys/class/gpio# echo out > /sys/class/gpio/gpio132/direction
root@kbd:/sys/class/gpio# echo 0 > /sys/class/gpio/gpio132/value
root@kbd:/sys/class/gpio# echo 1 > /sys/class/gpio/gpio132/value
root@kbd:/sys/class/gpio# echo 131 > /sys/class/gpio/export
root@kbd:/sys/class/gpio# echo out > /sys/class/gpio/gpio131/direction
root@kbd:/sys/class/gpio# echo 0 > /sys/class/gpio/gpio131/value
root@kbd:/sys/class/gpio# echo 1 > /sys/class/gpio/gpio131/value
root@kbd:/sys/class/gpio# echo 133 > /sys/class/gpio/export
root@kbd:/sys/class/gpio# echo out > /sys/class/gpio/gpio133/direction
root@kbd:/sys/class/gpio# echo 0 > /sys/class/gpio/gpio133/value
root@kbd:/sys/class/gpio# echo 1 > /sys/class/gpio/gpio133/value
Code: Select all
sudo apt-get install device-tree-compiler
/etc/kernel/postinst.d/i2s-disable
Code: Select all
$ cat /etc/kernel/postinst.d/i2s-disable
#!/bin/bash
#disable i2s for Odroid C2 after each kernel update
#requires device-tree-compiler
# sudo apt-get install device-tree-compiler
echo "Disabling I2S support from the device tree"
/usr/bin/fdtput /media/boot/meson64_odroidc2.dtb /I2S status disabled
/usr/bin/fdtput /media/boot/meson64_odroidc2.dtb /i2s_platform status disabled
Code: Select all
$ sudo chmod a+x /etc/kernel/postinst.d/i2s-disable
Code: Select all
$ sudo apt-get install --reinstall linux-image-3.14.79-110
...
run-parts: executing /etc/kernel/postinst.d/i2s-disable 3.14.79-110 /boot/vmlinuz-3.14.79-110
I tried withodroid wrote:GPIOAO.BIT6 seems to be mapped to SPDIF output.
So you might need to find another item in the DT file.
Code: Select all
fdtput /media/boot/meson64_odroidc2.dtb /SPDIF status disabled
How to disable the UART Function?mad_ady wrote: ↑Thu Apr 20, 2017 5:11 pmThe code above seems to disable i2s (I can't see any i2s output in dmesg after reboot):Code: Select all
# fdtput /media/boot/meson64_odroidc2.dtb /I2S status disabled # fdtget /media/boot/meson64_odroidc2.dtb /I2S status 127 # fdtput /media/boot/meson64_odroidc2.dtb /i2s_platform status disabled # fdtget /media/boot/meson64_odroidc2.dtb /i2s_platform status 127
dmesg | grep -i i2s
Code: Select all
root@uy-scuti:~# cat /proc/asound/cards
1 [Set ]: USB-Audio - C-Media USB Headphone Set
C-Media USB Headphone Set at usb-dwc2_b-1.1.4, full speed
root@uy-scuti:~# dmesg | grep -i hdmi
[ 0.000000] Kernel command line: root=UUID=e139ce78-9841-40fe-8823-96a304a09859 rootwait ro console=ttyS0,115200n8 console=tty0 no_console_suspend hdmimode=custombuilt modeline=1024,600,49000,37347,60,1024,1029,1042,1312,60
0,602,605,622,0,1,1 m_bpp=32 vout=hdmi fsck.repair=yes net.ifnames=0 elevator=noop disablehpd=true max_freq=1752 maxcpus=4 monitor_onoff=false disableuhs=false mmc_removable=true usbmulticam=false usbhid.quirks=0x0eef:0x0005:0
x0004
[ 0.000000] logo: get hdmimode: custombuilt
[ 0.153416] hdmitx: system: amhdmitx_init
[ 0.153425] hdmitx: system: Ver: 2014May6
[ 0.159178] hdmitx: system: amhdmitx_probe
[ 0.159434] hdmitx hpd irq = 89
[ 0.159634] hdmitx20: Mapped PHY: 0xc0800000
[ 0.159646] hdmitx20: Mapped PHY: 0xc1104400
[ 0.159668] hdmitx20: Mapped PHY: 0xc8100000
[ 0.159678] hdmitx20: Mapped PHY: 0xc8834000
[ 0.159688] hdmitx20: Mapped PHY: 0xc883a000
[ 0.159698] hdmitx20: Mapped PHY: 0xc883c000
[ 0.159712] hdmitx20: Mapped PHY: 0xd0100000
[ 0.159723] hdmitx20: Mapped PHY: 0xda83a000
[ 0.159738] hdmitx: alread display in uboot 0x10
[ 0.166750] hdmitx: system: irq 80000002
[ 0.483393] hdmitx: plugin
[ 0.618893] hdmitx: edid: find IEEEOUT
[ 0.618960] hdmitx: video: get current mode: null
[ 0.618984] hdmitx tx_aud_src = 0
[ 0.619016] hdmitx aud_n_para = 24576
[ 0.619039] hdmitx set channel status
[ 2.752910] hdmitx: system: irq 80000004
[ 2.808714] hdmitx: system: irq 80000002
[ 2.828840] hdmitx: system: irq 80000004
[ 2.887200] hdmitx: system: irq 80000002
[ 3.050227] hdmitx: video: get current mode: custombuilt
[ 3.063234] hdmitx: video: get current mode: custombuilt
[ 3.066617] hdmitx: system: already init VIC = 0 Now VIC = 790
[ 3.072460] hdmitx: rx no SCDC present indicator
[ 3.077029] hdmitx: system: irq 80000004
[ 3.082926] hdmitx: ddc rd8b error 0x54 0x01
[ 3.087149] hdmirx version is 1.4 or below
[ 3.089187] hdmitx: system: set pll
[ 3.092640] hdmitx: system: param->VIC:790
[ 3.106779] hdmitx: set clk of VIC = 790 done
[ 3.106827] hdmitx_set_hw[4470] set VIC = 790
[ 3.130524] hdmitx: system: irq 2
[ 3.235218] hdmitx: system: phy setting done
[ 3.306607] Sink is HDMI device
[ 3.333241] hdmitx tx_aud_src = 0
[ 3.333841] hdmitx: system: irq 80000001
[ 3.337740] hdmitx aud_n_para = 24576
[ 3.341354] hdmitx set channel status
[ 3.348765] hdmitx: warning: tvenc phy 27000 vid 54000 enc 27000 pix 27000 clocks not equal
[ 3.357048] fb: vinfo 0 480i60hz, hdmi 7 720x480i60hz, 720x480-60 4:3 27000
[ 3.363945] fb: warning: vinfo 1 480i_rpt, 720x480-60 4:3 27000, hdmi 11 no para
[ 3.371277] fb: warning: vinfo 2 480cvbs, 720x480-60 4:3 27000, no hdmi vic
[ 3.378179] fb: warning: vinfo 4 480p_rpt, 720x480-60 4:3 27000, hdmi 36 no para
[ 3.385507] hdmitx: warning: tvenc phy 27000 vid 54000 enc 27000 pix 27000 clocks not equal
[ 3.393791] fb: vinfo 5 576i50hz, hdmi 22 720x576i50hz, 720x576-50 4:3 27000
[ 3.400767] fb: warning: vinfo 6 576i_rpt, 720x576-50 4:3 27000, hdmi 26 no para
[ 3.408111] fb: warning: vinfo 7 576cvbs, 720x576-50 4:3 27000, no hdmi vic
[ 3.415006] fb: warning: vinfo 9 576p_rpt, 720x576-50 4:3 27000, hdmi 38 no para
[ 3.422351] fb: warning: vinfo 23 4k2k5g, 3840x2160-50 16:9 495000, no hdmi vic
[ 3.429598] fb: warning: hdmi 109 (0x000 + 109) no video para
[ 3.435288] hdmitx: warning: tvenc no clk for 109 hdmi
[ 3.445882] fb: vinfo 29 4k1k120hz, hdmi 109 3840x1080p120hz, 3840x1080-120 32:9 594000
[ 3.453830] fb: warning: vinfo 30 4k1k120hz420, 3840x1080-120 32:9 594000, no hdmi vic
[ 3.461678] fb: warning: hdmi 110 (0x000 + 110) no video para
[ 3.467364] hdmitx: warning: tvenc no clk for 110 hdmi
[ 3.472458] fb: warning: hdmi 3840x1080-50 594000 != 3840x1080-100 594000 vinfo
[ 3.485227] fb: vinfo 31 4k1k100hz, hdmi 110 3840x1080p100hz, 3840x1080-100 32:9 594000
[ 3.493153] fb: warning: vinfo 32 4k1k100hz420, 3840x1080-100 32:9 594000, no hdmi vic
[ 3.501014] fb: warning: vinfo 33 4k05k240hz, 3840x1080-240 64:9 594000, no hdmi vic
[ 3.508685] fb: warning: vinfo 34 4k05k240hz420, 3840x540-240 64:9 594000, no hdmi vic
[ 3.516538] fb: warning: vinfo 35 4k05k200hz, 3840x540-200 64:9 594000, no hdmi vic
[ 3.524125] fb: warning: vinfo 36 4k05k200hz420, 3840x1080-200 64:9 594000, no hdmi vic
[ 3.532054] hdmitx: warning: tvenc 51830 != 51450 hdmi
[ 3.540853] fb: vinfo 41 1024x600p60hz, hdmi 772 1024x600p60hz, 1024x600-60 17:10 51450
[ 3.548817] hdmitx: warning: 480x320p 800 263 0 tvenc !=
[ 3.548819] hdmitx: 480x320p 800 525 0 hdmi
[ 3.548822] hdmitx: warning: 100 120 95 8 100 4 tvenc !=
[ 3.548824] hdmitx: 100 120 189 8 100 8 hdmi
[ 3.548826] hdmitx: warning: tvenc TOTAL_LINES 263 != 320+107 (320+107) hdmi
[ 3.548829] fb: vinfo 56 480x320p60hz, hdmi 787 480x320p60hz, 480x320-60 3:2 25200
[ 3.548834] hdmitx: warning: 480x272p 800 263 0 tvenc !=
[ 3.548835] hdmitx: 480x272p 800 525 0 hdmi
[ 3.548837] hdmitx: warning: 100 120 119 8 100 4 tvenc !=
[ 3.548839] hdmitx: 100 120 238 8 100 7 hdmi
[ 3.548841] hdmitx: warning: tvenc TOTAL_LINES 263 != 272+131 (272+131) hdmi
[ 3.548844] fb: vinfo 57 480x272p60hz, hdmi 788 480x272p60hz, 480x272-60 3:2 25200
[ 3.548871] fb: warning: vinfo 62 wsxga, 1440x900-60 8:5 88750, no hdmi vic
[ 3.548880] hdmitx: warning: tvenc no clk for 790 hdmi
[ 3.548883] fb: vinfo 69 custombuilt, hdmi 790 custombuilt, 1024x600-60 16:9 49000
[ 3.548886] fb: validating hdmi format tables
[ 3.548889] fb: warning: hdmi 2 (0x000 + 2) no format para
[ 3.548892] fb: warning: hdmi 6 (0x000 + 6) no format para
[ 3.548895] hdmitx: warning: tvenc phy 27000 vid 54000 enc 27000 pix 27000 clocks not equal
[ 3.548898] fb: info: hdmi 7 720x480i60hz, 1440x240-59 27000
[ 3.548903] fb: warning: hdmi 17 (0x000 + 17) no format para
[ 3.548906] fb: warning: hdmi 21 (0x000 + 21) no format para
[ 3.548909] hdmitx: warning: tvenc phy 27000 vid 54000 enc 27000 pix 27000 clocks not equal
[ 3.548912] fb: info: hdmi 22 720x576i50hz, 1440x288-50 27000
[ 3.548945] fb: warning: hdmi 109 (0x000 + 109) no video para
[ 3.548946] hdmitx: warning: tvenc no clk for 109 hdmi
[ 3.548949] fb: info: hdmi 109 3840x1080p120hz, 3840x1080-120 594000
[ 3.548951] fb: warning: hdmi 110 (0x000 + 110) no video para
[ 3.548953] hdmitx: warning: tvenc no clk for 110 hdmi
[ 3.548955] fb: info: hdmi 110 3840x1080p100hz, 3840x1080-50 594000
[ 3.548957] fb: warning: hdmi 111 (0x000 + 111) no video para
[ 3.548960] hdmitx: warning: 3840x1080p 4400 562 0 tvenc !=
[ 3.548962] hdmitx: 3840x540p 4400 562 0 hdmi
[ 3.548964] hdmitx: warning: tvenc TOTAL_LINES 562 != 1080+22 (1080+22) hdmi
[ 3.548965] hdmitx: warning: tvenc no clk for 111 hdmi
[ 3.548968] fb: info: hdmi 111 3840x540p240hz, 3840x540-120 594000
[ 3.548970] fb: warning: hdmi 112 (0x000 + 112) no video para
[ 3.548972] hdmitx: warning: 3840x1080p 5280 562 0 tvenc !=
[ 3.548974] hdmitx: 3840x540p 5280 562 0 hdmi
[ 3.548976] hdmitx: warning: tvenc TOTAL_LINES 562 != 1080+22 (1080+22) hdmi
[ 3.548977] hdmitx: warning: tvenc no clk for 112 hdmi
[ 3.548979] fb: info: hdmi 112 3840x540p200hz, 3840x540-50 594000
[ 3.549017] fb: warning: hdmi 354 (0x100 + 98) no video para
[ 3.549019] fb: warning: hdmi 354 (0x100 + 98) no format para
[ 3.549026] hdmitx: warning: tvenc 51830 != 51450 hdmi
[ 3.549028] fb: info: hdmi 772 1024x600p60hz, 1024x600-60 51450
[ 3.549039] hdmitx: warning: 480x320p 800 263 0 tvenc !=
[ 3.549041] hdmitx: 480x320p 800 525 0 hdmi
[ 3.549043] hdmitx: warning: 100 120 95 8 100 4 tvenc !=
[ 3.549045] hdmitx: 100 120 189 8 100 8 hdmi
[ 3.549047] hdmitx: warning: tvenc TOTAL_LINES 263 != 320+107 (320+107) hdmi
[ 3.549049] fb: info: hdmi 787 480x320p60hz, 480x320-60 25200
[ 3.549052] hdmitx: warning: 480x272p 800 263 0 tvenc !=
[ 3.549054] hdmitx: 480x272p 800 525 0 hdmi
[ 3.549056] hdmitx: warning: 100 120 119 8 100 4 tvenc !=
[ 3.549058] hdmitx: 100 120 238 8 100 7 hdmi
[ 3.549060] hdmitx: warning: tvenc TOTAL_LINES 263 != 272+131 (272+131) hdmi
[ 3.549062] fb: info: hdmi 788 480x272p60hz, 480x272-60 25200
[ 3.549064] fb: found 226 valid hdmi format parameters
[ 3.549086] fb: hdmi vic for 69 custombuilt is: 790
[ 3.549088] fb: hdmi format para for 790 is: 790 custombuilt
[ 3.549090] fb: hdmi format para for 790 is: 790 custombuilt
[ 3.716977] hdmitx: system: irq 80000004
[ 3.835460] hdmitx: system: irq 80000002
[ 3.933165] hdmitx: system: irq 80000004
[ 4.278923] cectx c810023c.aocec: aml_cec_probe(): can't find hdmirx
[ 4.284071] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 4.284074] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 4.284089] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 4.287618] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 4.287621] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 4.287634] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 4.289541] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 4.289544] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 4.289556] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 4.360159] hdmitx: system: irq 80000002
[ 4.365474] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 4.365476] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 4.365492] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 4.365633] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 4.365635] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 4.365642] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 4.413763] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 4.413765] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 4.413779] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 4.545754] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 4.545757] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 4.545766] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 4.965052] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 4.965055] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 4.965067] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 5.409666] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 5.416675] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 5.422665] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 5.436267] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 5.440859] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 5.450006] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 9.397586] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 9.404591] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 9.410616] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 9.450925] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 9.518332] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 9.518353] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 9.518577] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 9.518580] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 9.518587] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 9.875118] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 9.879473] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 9.886627] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 10.006027] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 10.020958] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 10.029317] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 10.037387] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 10.047149] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 10.051588] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 10.290858] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 10.290861] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 10.290895] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 10.377555] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 10.491051] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 10.491074] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 10.491334] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 10.491337] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 10.491348] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 19.628028] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 19.629852] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 19.636310] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 19.636639] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 19.663416] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 19.664051] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
[ 19.699437] odroid_hdmi_snd odroid_hdmi: parse aml sound card routing error -517
[ 19.701255] odroid_hdmi_snd odroid_hdmi: Can't probe snd_soc_card
[ 19.707525] platform odroid_hdmi: Driver odroid_hdmi_snd requests probe deferral
root@uy-scuti:~# cat /proc/asound/cards
1 [Set ]: USB-Audio - C-Media USB Headphone Set
C-Media USB Headphone Set at usb-dwc2_b-1.1.4, full speed
root@uy-scuti:~# uname -a
Linux uy-scuti 3.16.75-47 #1 SMP PREEMPT Sat Oct 19 14:21:52 -03 2019 aarch64 aarch64 aarch64 GNU/Linux
root@uy-scuti:~# dmesg | grep i2s
root@uy-scuti:~#
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