MAX98390 Linux Driver Issue

jacobso

on Oct 25, 2025

Category: Software

Product Number: MAX98390

Hi
I am using MAX98390 ALSA Soc Audio driver in Linux 5.10.10 with stm32mp157 in my custom board

DISTRO : openstlinux-weston

DISTRO_CODENAME : dunfell

I connect max98390 to i2s1 of stm32mp157

it is my dts:

sound {

compatible = "simple-audio-card";

pinctrl-names = "default";

simple-audio-card,name = "max98390-audio-card";

simple-audio-card,format = "i2s";

/*simple-audio-card,widgets = "Speaker", "Speaker";

simple-audio-card,routing = "Speaker", "Speaker";*/

simple-audio-card,widgets =

"Speaker", "Left Speaker",

"Speaker", "Right Speaker";

simple-audio-card,routing =

"Left Speaker", "BE_OUT",

"Right Speaker", "BE_OUT";

simple-audio-card,bitclock-master = <&cpu_dai>;

simple-audio-card,frame-master = <&cpu_dai>;

simple-audio-card,mclk-fs = <256>;

status = "okay";

cpu_dai: simple-audio-card,cpu {

sound-dai = <&i2s1>;

// dai-tdm-slot-num = <2>;

// dai-tdm-slot-width = <16>;

};

cpu_codec: simple-audio-card,codec {

sound-dai = <&max98390>;

};

&i2c1{

pinctrl-names = "default", "sleep";

pinctrl-0 = <&i2c1_pins_mx>;

pinctrl-1 = <&i2c1_sleep_pins_mx>;

status = "okay";

/* USER CODE BEGIN i2c1 */

max98390: amplifier@3c {

#sound-dai-cells = <0>;

reset-gpios = <&gpioz 1 GPIO_ACTIVE_LOW>;

compatible = "maxim,max98390";

reg = <0x3c>;

maxim,temperature_calib = <1024>;

maxim,r0_calib = <100232>;

status = "okay";

clocks = <&i2s1>;

clock-names = "MCLK";

};

&i2s1{

pinctrl-names = "default", "sleep";

pinctrl-0 = <&i2s1_pins_mx &i2s1_pins_z_mx>;

pinctrl-1 = <&i2s1_sleep_pins_mx &i2s1_sleep_pins_z_mx>;

status = "okay";

/* USER CODE BEGIN i2s1 */

clocks = <&rcc SPI1>, <&rcc SPI1_K>, <&rcc PLL3_Q>, <&rcc PLL3_R>;

clock-names = "pclk", "i2sclk", "x8k", "x11k";

#clock-cells = <0>;

};

and in board
~# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: max98390audioca [max98390-audio-card], device 0: 44004000.audio-controller-max98390-aif1 max98390-aif1-0 [44004000.audio-controller-max98390-aif1 max98390-aif1-0]
Subdevices: 1/1
Subdevice #0: subdevice #0

without playing anything register content of max98390 is

[ 341.992258] max98390 0-003c: READ MAX98390 regmap

[ 341.998112] max98390 0-003c: 0x2000 --> 0x00

[ 342.006935] max98390 0-003c: 0x2002 --> 0x00

[ 342.010650] max98390 0-003c: 0x2003 --> 0x00

[ 342.018834] max98390 0-003c: 0x2004 --> 0x00

[ 342.022650] max98390 0-003c: 0x2005 --> 0x00

[ 342.030305] max98390 0-003c: 0x2006 --> 0x00

[ 342.036206] max98390 0-003c: 0x2007 --> 0x00

[ 342.039921] max98390 0-003c: 0x2008 --> 0x00

[ 342.048025] max98390 0-003c: 0x2009 --> 0x00

[ 342.051713] max98390 0-003c: 0x200A --> 0x00

[ 342.059850] max98390 0-003c: 0x200B --> 0xF0

[ 342.065835] max98390 0-003c: 0x200C --> 0x00

[ 342.069517] max98390 0-003c: 0x200D --> 0x00

[ 342.076784] max98390 0-003c: 0x200E --> 0x00

[ 342.079732] max98390 0-003c: 0x200F --> 0x00

[ 342.087413] max98390 0-003c: 0x2010 --> 0x00

[ 342.090359] max98390 0-003c: 0x2011 --> 0x01

[ 342.097946] max98390 0-003c: 0x2012 --> 0x6F

[ 342.100891] max98390 0-003c: 0x2014 --> 0x00

[ 342.108440] max98390 0-003c: 0x2015 --> 0x00

[ 342.111384] max98390 0-003c: 0x2016 --> 0x00

[ 342.119207] max98390 0-003c: 0x2017 --> 0x75

[ 342.122156] max98390 0-003c: 0x2018 --> 0x8C

[ 342.126712] max98390 0-003c: 0x2019 --> 0x08

[ 342.130973] max98390 0-003c: 0x201A --> 0x55

[ 342.135555] max98390 0-003c: 0x201B --> 0x03

[ 342.139842] max98390 0-003c: 0x201C --> 0x00

[ 342.144298] max98390 0-003c: 0x201D --> 0x03

[ 342.148599] max98390 0-003c: 0x201E --> 0x00

[ 342.153105] max98390 0-003c: 0x201F --> 0xFC

[ 342.157459] max98390 0-003c: 0x2020 --> 0xFF

[ 342.161809] max98390 0-003c: 0x2021 --> 0x00

[ 342.166310] max98390 0-003c: 0x2022 --> 0x10

[ 342.170629] max98390 0-003c: 0x2023 --> 0x00

[ 342.175130] max98390 0-003c: 0x2024 --> 0x40

[ 342.179442] max98390 0-003c: 0x2025 --> 0x1C

[ 342.183931] max98390 0-003c: 0x2026 --> 0x42

[ 342.188256] max98390 0-003c: 0x2027 --> 0x07

[ 342.192743] max98390 0-003c: 0x202C --> 0x00

[ 342.197066] max98390 0-003c: 0x202D --> 0x00

[ 342.201467] max98390 0-003c: 0x202E --> 0x00

[ 342.205973] max98390 0-003c: 0x202F --> 0x00

[ 342.210288] max98390 0-003c: 0x2030 --> 0x00

[ 342.214786] max98390 0-003c: 0x2031 --> 0x00

[ 342.219099] max98390 0-003c: 0x2032 --> 0x00

[ 342.223586] max98390 0-003c: 0x2033 --> 0x00

[ 342.227911] max98390 0-003c: 0x2039 --> 0x3F

[ 342.232309] max98390 0-003c: 0x203A --> 0x80

[ 342.236807] max98390 0-003c: 0x203B --> 0x00

[ 342.241129] max98390 0-003c: 0x203C --> 0x00

[ 342.245636] max98390 0-003c: 0x203D --> 0x05

[ 342.249942] max98390 0-003c: 0x203E --> 0x85

[ 342.254419] max98390 0-003c: 0x203F --> 0x03

[ 342.258754] max98390 0-003c: 0x2040 --> 0x0F

[ 342.263258] max98390 0-003c: 0x2041 --> 0x1C

[ 342.267568] max98390 0-003c: 0x2042 --> 0x05

[ 342.271966] max98390 0-003c: 0x2043 --> 0x40

[ 342.276781] max98390 0-003c: 0x2044 --> 0x07

[ 342.280786] max98390 0-003c: 0x2045 --> 0x00

[ 342.285327] max98390 0-003c: 0x2046 --> 0x23

[ 342.289600] max98390 0-003c: 0x2047 --> 0x00

[ 342.294096] max98390 0-003c: 0x2048 --> 0x00

[ 342.298412] max98390 0-003c: 0x2049 --> 0x00

[ 342.302912] max98390 0-003c: 0x204A --> 0x00

[ 342.307225] max98390 0-003c: 0x204B --> 0x00

[ 342.311623] max98390 0-003c: 0x204C --> 0x00

[ 342.316751] max98390 0-003c: 0x204D --> 0x00

[ 342.321182] max98390 0-003c: 0x204E --> 0x00

[ 342.327102] max98390 0-003c: 0x204F --> 0x00

[ 342.330166] max98390 0-003c: 0x2050 --> 0x00

[ 342.335253] max98390 0-003c: 0x2051 --> 0x00

[ 342.339589] max98390 0-003c: 0x2052 --> 0xFF

[ 342.344105] max98390 0-003c: 0x2053 --> 0xFF

[ 342.348393] max98390 0-003c: 0x2054 --> 0x00

[ 342.352174] max98390 0-003c: 0x2055 --> 0x00

[ 342.356714] max98390 0-003c: 0x2056 --> 0x00

[ 342.360888] max98390 0-003c: 0x2057 --> 0x00

[ 342.365493] max98390 0-003c: 0x2058 --> 0x00

[ 342.369708] max98390 0-003c: 0x2059 --> 0x00

[ 342.374214] max98390 0-003c: 0x205A --> 0x00

[ 342.378523] max98390 0-003c: 0x205B --> 0x00

[ 342.383009] max98390 0-003c: 0x205C --> 0x00

[ 342.387332] max98390 0-003c: 0x205D --> 0x00

[ 342.391731] max98390 0-003c: 0x205E --> 0x1F

[ 342.396287] max98390 0-003c: 0x205F --> 0x00

[ 342.400555] max98390 0-003c: 0x2060 --> 0x00

[ 342.405085] max98390 0-003c: 0x2061 --> 0x00

[ 342.409365] max98390 0-003c: 0x2062 --> 0x00

[ 342.413865] max98390 0-003c: 0x2063 --> 0x00

[ 342.418176] max98390 0-003c: 0x2064 --> 0x00

[ 342.422677] max98390 0-003c: 0x2065 --> 0x00

[ 342.426991] max98390 0-003c: 0x2066 --> 0x00

[ 342.431388] max98390 0-003c: 0x2067 --> 0x00

[ 342.435887] max98390 0-003c: 0x2068 --> 0x00

[ 342.440210] max98390 0-003c: 0x2069 --> 0x00

[ 342.444717] max98390 0-003c: 0x206A --> 0x00

[ 342.449070] max98390 0-003c: 0x206B --> 0x00

[ 342.453507] max98390 0-003c: 0x206C --> 0x00

[ 342.457834] max98390 0-003c: 0x206D --> 0x00

[ 342.462232] max98390 0-003c: 0x206E --> 0x00

[ 342.466743] max98390 0-003c: 0x206F --> 0x00

[ 342.471052] max98390 0-003c: 0x2070 --> 0x00

[ 342.476161] max98390 0-003c: 0x2071 --> 0x00

[ 342.479964] max98390 0-003c: 0x2072 --> 0x00

[ 342.487513] max98390 0-003c: 0x2073 --> 0x00

[ 342.490457] max98390 0-003c: 0x2074 --> 0x00

[ 342.498096] max98390 0-003c: 0x2075 --> 0x00

[ 342.501045] max98390 0-003c: 0x2076 --> 0x0E

[ 342.508719] max98390 0-003c: 0x2077 --> 0x80

[ 342.511664] max98390 0-003c: 0x2078 --> 0x07

[ 342.519381] max98390 0-003c: 0x2079 --> 0x07

[ 342.522325] max98390 0-003c: 0x207A --> 0x01

[ 342.530641] max98390 0-003c: 0x207B --> 0x00

[ 342.535685] max98390 0-003c: 0x207C --> 0x46

[ 342.538629] max98390 0-003c: 0x207D --> 0x2B

[ 342.546420] max98390 0-003c: 0x207E --> 0x08

[ 342.549367] max98390 0-003c: 0x207F --> 0x00

[ 342.557104] max98390 0-003c: 0x2080 --> 0x03

[ 342.560048] max98390 0-003c: 0x2081 --> 0x03

[ 342.567795] max98390 0-003c: 0x2082 --> 0x07

[ 342.570739] max98390 0-003c: 0x2084 --> 0x00

[ 342.578429] max98390 0-003c: 0x2380 --> 0x00

[ 342.581373] max98390 0-003c: 0x2381 --> 0x00

[ 342.589138] max98390 0-003c: 0x2382 --> 0x00

[ 342.592081] max98390 0-003c: 0x2383 --> 0x00

[ 342.599614] max98390 0-003c: 0x2384 --> 0x00

[ 342.602750] max98390 0-003c: 0x2385 --> 0x00

[ 342.606969] max98390 0-003c: 0x2386 --> 0x00

[ 342.611369] max98390 0-003c: 0x2387 --> 0x00

[ 342.615887] max98390 0-003c: 0x2388 --> 0x00

[ 342.620187] max98390 0-003c: 0x2389 --> 0x00

[ 342.624678] max98390 0-003c: 0x238B --> 0x00

[ 342.629001] max98390 0-003c: 0x238D --> 0x00

[ 342.633490] max98390 0-003c: 0x238E --> 0x00

[ 342.637812] max98390 0-003c: 0x238F --> 0x00

[ 342.642210] max98390 0-003c: 0x2390 --> 0x00

[ 342.646698] max98390 0-003c: 0x2391 --> 0x04

[ 342.651143] max98390 0-003c: 0x2392 --> 0x42

[ 342.655526] max98390 0-003c: 0x2393 --> 0xA6

[ 342.659896] max98390 0-003c: 0x2394 --> 0x06

[ 342.664329] max98390 0-003c: 0x2395 --> 0x00

[ 342.668653] max98390 0-003c: 0x2396 --> 0x00

[ 342.673136] max98390 0-003c: 0x2397 --> 0x00

[ 342.677464] max98390 0-003c: 0x2398 --> 0x00

[ 342.681864] max98390 0-003c: 0x2399 --> 0x00

[ 342.686347] max98390 0-003c: 0x239A --> 0x00

[ 342.690685] max98390 0-003c: 0x239B --> 0x00

[ 342.695771] max98390 0-003c: 0x239C --> 0x00

[ 342.700132] max98390 0-003c: 0x239D --> 0x00

[ 342.707798] max98390 0-003c: 0x239E --> 0x00

[ 342.711381] max98390 0-003c: 0x239F --> 0x00

[ 342.719016] max98390 0-003c: 0x23B5 --> 0x00

[ 342.722047] max98390 0-003c: 0x23B6 --> 0x08

[ 342.729614] max98390 0-003c: 0x23B9 --> 0x20

[ 342.733518] max98390 0-003c: 0x23BA --> 0xA0

[ 342.736972] max98390 0-003c: 0x23E0 --> 0x00

[ 342.741367] max98390 0-003c: 0x23E1 --> 0x00

[ 342.746529] max98390 0-003c: 0x23F0 --> 0x00

[ 342.750922] max98390 0-003c: 0x23F1 --> 0x00

[ 342.755452] max98390 0-003c: 0x23F2 --> 0x00

[ 342.759697] max98390 0-003c: 0x23F3 --> 0x00

[ 342.763818] max98390 0-003c: 0x23FF --> 0x00

[ 342.767815] max98390 0-003c: 0x24FF --> 0x42

and when i paly sth regmap is:

[ 637.476900] max98390 0-003c: READ MAX98390 regmap

[ 637.483067] max98390 0-003c: 0x2000 --> 0x00

[ 637.487166] max98390 0-003c: 0x2002 --> 0x00

[ 637.491533] max98390 0-003c: 0x2003 --> 0x00

[ 637.496001] max98390 0-003c: 0x2004 --> 0x00

[ 637.500347] max98390 0-003c: 0x2005 --> 0x00

[ 637.504901] max98390 0-003c: 0x2006 --> 0x00

[ 637.509085] max98390 0-003c: 0x2007 --> 0x05

[ 637.513889] max98390 0-003c: 0x2008 --> 0x00

[ 637.518080] max98390 0-003c: 0x2009 --> 0x00

[ 637.522298] max98390 0-003c: 0x200A --> 0x00

[ 637.526890] max98390 0-003c: 0x200B --> 0xF0

[ 637.531257] max98390 0-003c: 0x200C --> 0x00

[ 637.536055] max98390 0-003c: 0x200D --> 0x00

[ 637.539404] max98390 0-003c: 0x200E --> 0x00

[ 637.543812] max98390 0-003c: 0x200F --> 0x00

[ 637.548150] max98390 0-003c: 0x2010 --> 0x00

[ 637.552637] max98390 0-003c: 0x2011 --> 0x01

[ 637.556969] max98390 0-003c: 0x2012 --> 0x6F

[ 637.561370] max98390 0-003c: 0x2014 --> 0x00

[ 637.565867] max98390 0-003c: 0x2015 --> 0x00

[ 637.570196] max98390 0-003c: 0x2016 --> 0x00

[ 637.574694] max98390 0-003c: 0x2017 --> 0x75

[ 637.579013] max98390 0-003c: 0x2018 --> 0x8C

[ 637.583507] max98390 0-003c: 0x2019 --> 0x08

[ 637.587834] max98390 0-003c: 0x201A --> 0x55

[ 637.592234] max98390 0-003c: 0x201B --> 0x03

[ 637.596723] max98390 0-003c: 0x201C --> 0x00

[ 637.601061] max98390 0-003c: 0x201D --> 0x03

[ 637.605561] max98390 0-003c: 0x201E --> 0x00

[ 637.609880] max98390 0-003c: 0x201F --> 0xFC

[ 637.614359] max98390 0-003c: 0x2020 --> 0xFF

[ 637.618698] max98390 0-003c: 0x2021 --> 0x00

[ 637.623173] max98390 0-003c: 0x2022 --> 0x10

[ 637.627517] max98390 0-003c: 0x2023 --> 0x00

[ 637.631918] max98390 0-003c: 0x2024 --> 0x40

[ 637.636409] max98390 0-003c: 0x2025 --> 0x1C

[ 637.640744] max98390 0-003c: 0x2026 --> 0x42

[ 637.645229] max98390 0-003c: 0x2027 --> 0x07

[ 637.649560] max98390 0-003c: 0x202C --> 0x00

[ 637.654037] max98390 0-003c: 0x202D --> 0x00

[ 637.658379] max98390 0-003c: 0x202E --> 0x00

[ 637.662865] max98390 0-003c: 0x202F --> 0x00

[ 637.667196] max98390 0-003c: 0x2030 --> 0x00

[ 637.671598] max98390 0-003c: 0x2031 --> 0x00

[ 637.676109] max98390 0-003c: 0x2032 --> 0x00

[ 637.680421] max98390 0-003c: 0x2033 --> 0x00

[ 637.684928] max98390 0-003c: 0x2039 --> 0x3F

[ 637.689241] max98390 0-003c: 0x203A --> 0x81

[ 637.693731] max98390 0-003c: 0x203B --> 0x00

[ 637.698057] max98390 0-003c: 0x203C --> 0x00

[ 637.702456] max98390 0-003c: 0x203D --> 0x05

[ 637.706945] max98390 0-003c: 0x203E --> 0x85

[ 637.711279] max98390 0-003c: 0x203F --> 0x03

[ 637.715779] max98390 0-003c: 0x2040 --> 0x0F

[ 637.720099] max98390 0-003c: 0x2041 --> 0x1C

[ 637.724576] max98390 0-003c: 0x2042 --> 0x05

[ 637.728914] max98390 0-003c: 0x2043 --> 0x40

[ 637.733405] max98390 0-003c: 0x2044 --> 0x07

[ 637.737732] max98390 0-003c: 0x2045 --> 0x00

[ 637.742132] max98390 0-003c: 0x2046 --> 0x23

[ 637.746616] max98390 0-003c: 0x2047 --> 0x00

[ 637.750955] max98390 0-003c: 0x2048 --> 0x00

[ 637.755459] max98390 0-003c: 0x2049 --> 0x00

[ 637.759774] max98390 0-003c: 0x204A --> 0x00

[ 637.764255] max98390 0-003c: 0x204B --> 0x00

[ 637.768595] max98390 0-003c: 0x204C --> 0x00

[ 637.773705] max98390 0-003c: 0x204D --> 0x00

[ 637.778150] max98390 0-003c: 0x204E --> 0x00

[ 637.782410] max98390 0-003c: 0x204F --> 0x00

[ 637.787769] max98390 0-003c: 0x2050 --> 0x00

[ 637.791296] max98390 0-003c: 0x2051 --> 0x00

[ 637.795980] max98390 0-003c: 0x2052 --> 0xFF

[ 637.800350] max98390 0-003c: 0x2053 --> 0xFF

[ 637.805056] max98390 0-003c: 0x2054 --> 0x00

[ 637.808446] max98390 0-003c: 0x2055 --> 0x00

[ 637.812851] max98390 0-003c: 0x2056 --> 0x00

[ 637.817178] max98390 0-003c: 0x2057 --> 0x00

[ 637.821643] max98390 0-003c: 0x2058 --> 0x00

[ 637.826069] max98390 0-003c: 0x2059 --> 0x00

[ 637.830405] max98390 0-003c: 0x205A --> 0x00

[ 637.834883] max98390 0-003c: 0x205B --> 0x00

[ 637.839222] max98390 0-003c: 0x205C --> 0x00

[ 637.843702] max98390 0-003c: 0x205D --> 0x00

[ 637.848042] max98390 0-003c: 0x205E --> 0x1F

[ 637.852443] max98390 0-003c: 0x205F --> 0x00

[ 637.856929] max98390 0-003c: 0x2060 --> 0x00

[ 637.861266] max98390 0-003c: 0x2061 --> 0x00

[ 637.865764] max98390 0-003c: 0x2062 --> 0x00

[ 637.870083] max98390 0-003c: 0x2063 --> 0x00

[ 637.874559] max98390 0-003c: 0x2064 --> 0x00

[ 637.878899] max98390 0-003c: 0x2065 --> 0x00

[ 637.883385] max98390 0-003c: 0x2066 --> 0x00

[ 637.887715] max98390 0-003c: 0x2067 --> 0x00

[ 637.892117] max98390 0-003c: 0x2068 --> 0x00

[ 637.896601] max98390 0-003c: 0x2069 --> 0x00

[ 637.900941] max98390 0-003c: 0x206A --> 0x00

[ 637.905445] max98390 0-003c: 0x206B --> 0x00

[ 637.909756] max98390 0-003c: 0x206C --> 0x00

[ 637.914237] max98390 0-003c: 0x206D --> 0x00

[ 637.918575] max98390 0-003c: 0x206E --> 0x00

[ 637.923054] max98390 0-003c: 0x206F --> 0x00

[ 637.927393] max98390 0-003c: 0x2070 --> 0x00

[ 637.932383] max98390 0-003c: 0x2071 --> 0x00

[ 637.936382] max98390 0-003c: 0x2072 --> 0x00

[ 637.940624] max98390 0-003c: 0x2073 --> 0x00

[ 637.945142] max98390 0-003c: 0x2074 --> 0x00

[ 637.949440] max98390 0-003c: 0x2075 --> 0x00

[ 637.953954] max98390 0-003c: 0x2076 --> 0x0E

[ 637.958260] max98390 0-003c: 0x2077 --> 0x80

[ 637.962740] max98390 0-003c: 0x2078 --> 0x07

[ 637.967077] max98390 0-003c: 0x2079 --> 0x07

[ 637.971478] max98390 0-003c: 0x207A --> 0x01

[ 637.976602] max98390 0-003c: 0x207B --> 0x00

[ 637.980469] max98390 0-003c: 0x207C --> 0x46

[ 637.985072] max98390 0-003c: 0x207D --> 0x2B

[ 637.989148] max98390 0-003c: 0x207E --> 0x08

[ 637.993640] max98390 0-003c: 0x207F --> 0x00

[ 637.998261] max98390 0-003c: 0x2080 --> 0x03

[ 638.002344] max98390 0-003c: 0x2081 --> 0x03

[ 638.006967] max98390 0-003c: 0x2082 --> 0x07

[ 638.011169] max98390 0-003c: 0x2084 --> 0x00

[ 638.017419] max98390 0-003c: 0x2380 --> 0x00

[ 638.020376] max98390 0-003c: 0x2381 --> 0x00

[ 638.029165] max98390 0-003c: 0x2382 --> 0x00

[ 638.032122] max98390 0-003c: 0x2383 --> 0x00

[ 638.040340] max98390 0-003c: 0x2384 --> 0x00

[ 638.045613] max98390 0-003c: 0x2385 --> 0x00

[ 638.048567] max98390 0-003c: 0x2386 --> 0x00

[ 638.056458] max98390 0-003c: 0x2387 --> 0x00

[ 638.059411] max98390 0-003c: 0x2388 --> 0x00

[ 638.067472] max98390 0-003c: 0x2389 --> 0x00

[ 638.070424] max98390 0-003c: 0x238B --> 0x00

[ 638.078995] max98390 0-003c: 0x238D --> 0x00

[ 638.081954] max98390 0-003c: 0x238E --> 0x00

[ 638.089919] max98390 0-003c: 0x238F --> 0x00

[ 638.093291] max98390 0-003c: 0x2390 --> 0x00

[ 638.097285] max98390 0-003c: 0x2391 --> 0x04

[ 638.101685] max98390 0-003c: 0x2392 --> 0x42

[ 638.106191] max98390 0-003c: 0x2393 --> 0xA6

[ 638.110565] max98390 0-003c: 0x2394 --> 0x06

[ 638.115009] max98390 0-003c: 0x2395 --> 0x00

[ 638.119327] max98390 0-003c: 0x2396 --> 0x00

[ 638.123810] max98390 0-003c: 0x2397 --> 0x00

[ 638.128198] max98390 0-003c: 0x2398 --> 0x00

[ 638.132619] max98390 0-003c: 0x2399 --> 0x00

[ 638.137047] max98390 0-003c: 0x239A --> 0x00

[ 638.141368] max98390 0-003c: 0x239B --> 0x00

[ 638.146492] max98390 0-003c: 0x239C --> 0x00

[ 638.150940] max98390 0-003c: 0x239D --> 0x00

[ 638.155398] max98390 0-003c: 0x239E --> 0x00

[ 638.159630] max98390 0-003c: 0x239F --> 0x00

[ 638.164296] max98390 0-003c: 0x23B5 --> 0x00

[ 638.167979] max98390 0-003c: 0x23B6 --> 0x08

[ 638.172234] max98390 0-003c: 0x23B9 --> 0x20

[ 638.176933] max98390 0-003c: 0x23BA --> 0xA0

[ 638.181105] max98390 0-003c: 0x23E0 --> 0x00

[ 638.185801] max98390 0-003c: 0x23E1 --> 0x00

[ 638.190490] max98390 0-003c: 0x23F0 --> 0x00

[ 638.195078] max98390 0-003c: 0x23F1 --> 0x00

[ 638.199390] max98390 0-003c: 0x23F2 --> 0x00

[ 638.204219] max98390 0-003c: 0x23F3 --> 0x00

[ 638.207623] max98390 0-003c: 0x23FF --> 0x01

[ 638.211906] max98390 0-003c: 0x24FF --> 0x42

and when play sth, No sound is playing.

when play sth for example

~# file loop3.wav
loop3.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, stereo 44100 Hz
~# aplay -D hw:0,0 loop3.wav &
~# Playing WAVE 'loop3.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo

i2s MCLK that connect to MCLK of max98390 when play this audio is 11.290MHz ( see in osciloscope)

lrclk: 44.104KHz ( see in osciloscope)

bclk: 1.411 MHz ( see in osciloscope)

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machschmitt

on Oct 16, 2025 3:25 PM
0
Hello jacobso

There are a few device tree sources for stm32mp157, which would make it very time consuming to track down what is the i2s controller you are using in your setup.

Based on stm32mp151 dtsi and on the device tree documentation for the i2s controller that has the i2s1 phandle there, we don't have to specify any clock cells [1]:

[1]: git.kernel.org/.../st,stm32-i2s.yaml

By the way, are those clocks missing an underline?

jacobso said:
/* USER CODE BEGIN i2s1 */

clocks = <&rcc SPI1>, <&rcc SPI1_K>, <&rcc PLL3_Q>, <&rcc PLL3_R>;

clock-names = "pclk", "i2sclk", "x8k", "x11k";

would be

/* USER CODE BEGIN i2s1 */

clocks = <&rcc_SPI1>, <&rcc_SPI1_K>, <&rcc_PLL3_Q>, <&rcc_PLL3_R>;

clock-names = "pclk", "i2sclk", "x8k", "x11k";

?

Note the '_' joining &rcc and SPI1 so they make up a single phandle.
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jacobso
on Oct 18, 2025 12:16 AM in reply to machschmitt
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hello machschmitt

No, I'm correct. if you look at example section of your link(https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/sound/st,stm32-i2s.yaml#n114):

also I said when I play something I see clokcs(lrclk, bclk, mclk). according to Register Map I provided before play anything and when play sth and these clks values, what is wrong? for example according to my clks why Reg:0x2007 is 0x05?
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btogorean

on Oct 20, 2025 7:59 AM in reply to jacobso
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Hello jacobso,

Can you please check the alsamixer if your playback paths are not muted and volume is not 0? Maybe send us the output of amixer for your MAX98390 card?
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jacobso
on Oct 20, 2025 10:47 AM in reply to btogorean
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hello btogorean

alsamixer is OK and volume isn't set to zero:
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machschmitt

on Oct 21, 2025 2:11 PM in reply to jacobso
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jacobso said:
also I said when I play something I see clokcs(lrclk, bclk, mclk). according to Register Map I provided before play anything and when play sth and these clks values, what is wrong? for example according to my clks why Reg:0x2007 is 0x05?

Having 0x05 at INTERRUPT STATE 3 register (0x2007) indicates a PCM frame error due to a rising edge of FRAME_ERR_RAW since the last FRAME_ERR_CLR. Unless I'm misinterpreting the data sheet, FRAME_ERR_RAW will occur after a number of consecutive mismatches between the measured number of BCLK periods per LRCLK period and the quantity set by PCM_BSEL (or PCM_MSEL) as explained in data sheet page 45. Based on the provided Register Maps, FRAME_ERR_RAW will occur after 4 incorrect BCLK/LRCLK frames (CLOCK MONITOR CONTROL register (0x2012) set to 0x6F). Can you verify that the number of BCLKs per LRCLK matches the value set to PCM CLOCK SETUP register (0x2026)? Under the conditions of the provided Register Map, it would be expected to have 32 BCLK clock cycles per LRCLK (PCM CLOCK SETUP register set to 0x42).
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jacobso
on Oct 25, 2025 12:24 AM in reply to machschmitt
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as I described earlier

jacobso said:
i2s MCLK that connect to MCLK of max98390 when play this audio is 11.290MHz ( see in osciloscope)

lrclk: 44.104KHz ( see in osciloscope)

bclk: 1.411 MHz ( see in osciloscope)

1.411MHz/44.104KHz = 32
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jacobso
on Oct 25, 2025 12:24 AM in reply to machschmitt
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as I described earlier

jacobso said:
i2s MCLK that connect to MCLK of max98390 when play this audio is 11.290MHz ( see in osciloscope)

lrclk: 44.104KHz ( see in osciloscope)

bclk: 1.411 MHz ( see in osciloscope)

1.411MHz/44.104KHz = 32
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MAX98390 Linux Driver Issue

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