I'm using imx-4.14.98-2.0.1_patch and TI TAS2505 codec. Here is my settings:
test.wav info:
U-Boot, according Table 61-7 in IMX6DQRM Rev5
void setup_audio(void){uint32_t reg, val;struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;/* Set PLL4 to 632.2176 MHz:632.2176 MHz = 24 MHz * (27 - 157824/240000)*/reg = readl(&anatop->pll_audio);reg = (reg & ~BM_ANADIG_PLL_AUDIO_DIV_SELECT) | BF_ANADIG_PLL_AUDIO_DIV_SELECT(27);writel(reg, &anatop->pll_audio);reg = readl(&anatop->pll_audio_num);reg = (reg & ~BM_ANADIG_PLL_AUDIO_NUM_A) | BF_ANADIG_PLL_AUDIO_NUM_A((0x20 << 24) + 0x1ffd9780); // -157824writel(reg, &anatop->pll_audio_num);reg = readl(&anatop->pll_audio_denom);reg = (reg & ~BM_ANADIG_PLL_AUDIO_DENOM_B) | BF_ANADIG_PLL_AUDIO_DENOM_B(240000);writel(reg, &anatop->pll_audio_denom);/* Set SSI2_DIV to (7 * 2) since pll4_post_div=4 defaultly */reg = readl(&ccm->cs2cdr);val = (((7 - 1) << MXC_CCM_CS2CDR_SSI2_CLK_PRED_OFFSET) & MXC_CCM_CS2CDR_SSI2_CLK_PRED_MASK) | \(((2 - 1) << MXC_CCM_CS2CDR_SSI2_CLK_PODF_OFFSET) & MXC_CCM_CS2CDR_SSI2_CLK_PODF_MASK);reg = (reg & ~(MXC_CCM_CS2CDR_SSI2_CLK_PRED_MASK | MXC_CCM_CS2CDR_SSI2_CLK_PODF_MASK)) | val;writel(reg, &ccm->cs2cdr);}
Device Tree:
&clks {assigned-clocks = <&clks IMX6QDL_CLK_LDB_DI0_SEL>,<&clks IMX6QDL_CLK_LDB_DI1_SEL>;assigned-clock-parents = <&clks IMX6QDL_CLK_PLL2_PFD0_352M>,<&clks IMX6QDL_CLK_PLL2_PFD0_352M>;};&ssi2 {assigned-clocks = <&clks IMX6QDL_CLK_PLL4>,<&clks IMX6QDL_PLL4_BYPASS>,<&clks IMX6QDL_CLK_SSI2_SEL>,<&clks IMX6QDL_CLK_CKO2_SEL>;assigned-clock-parents = <&clks IMX6QDL_CLK_OSC>,<&clks IMX6QDL_CLK_PLL4>,<&clks IMX6QDL_CLK_PLL4_POST_DIV>,<&clks IMX6QDL_CLK_SSI2>;// assigned-clock-rates = <632217600>, <0>, <11289600>, <0>;clocks = <&clks IMX6QDL_CLK_CKO>, <&clks IMX6QDL_CLK_SSI2>;fsl,mode = "i2s-master";status = "okay";};sound-tas2505 {compatible = "simple-audio-card";simple-audio-card,name = "tas2505";simple-audio-card,format = "i2s";simple-audio-card,bitclock-master = <&dailink0_master>;simple-audio-card,frame-master = <&dailink0_master>;// simple-audio-card,mclk-fs = <512>;dailink0_master: simple-audio-card,cpu {sound-dai = <&ssi2>;system-clock-frequency = <1411200>;};simple-audio-card,codec {sound-dai = <&tas2505>;};};tas2505: tas2505@18 {#sound-dai-cells = <0>;compatible = "fsl,tas2505";reg = <0x18>;enable-gpio = <&gpio5 6 GPIO_ACTIVE_HIGH>;muteon_poweroff = "false";};
fsl_ssi.c in kernal
static int fsl_ssi_set_bclk(){// ...dev_err(cpu_dai->dev,"%s(baudclk_is_used=%d)\n\t\t""i(%u), factor(%u), div2(%u), psr(%u), pm(%u), stccr(%u)\n\t\t""ipgclk(%lu), ssi_baudclk(%lu), ssi_bitclk(%u)\n\t\t""freq(%u), afreq(%u), clkrate(%lu), baudrate(%lu), tmprate(%lu)\n\t\t""sub(%llu), savesub(%llu)\n",__func__, baudclk_is_used,i, factor, div2, psr, pm, stccr,clk_get_rate(ssi_private->clk), clk_get_rate(ssi_private->baudclk), ssi_private->bitclk_freq,freq, afreq, clkrate, baudrate, tmprate,sub, savesub);if (!baudclk_is_used) {ret = clk_set_rate(ssi_private->baudclk, baudrate*2);if (ret) {dev_err(cpu_dai->dev, "failed to set baudclk rate\n");return -EINVAL;}}}
log output:
Playing WAVE './snd/test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
[ 32.668653] fsl-ssi-dai 202c000.ssi: fsl_ssi_set_bclk(baudclk_is_used=0)
[ 32.668653] i(1), factor(2), div2(0), psr(0), pm(1), stccr(1)
[ 32.668653] ipgclk(11289600), ssi_baudclk(11289600), ssi_bitclk(1411200)
[ 32.668653] freq(1411200), afreq(1411200), clkrate(2822400), baudrate(5644800), tmprate(5644800)
[ 32.668653] sub(0), savesub(0)
I have to double baudrate variable to make it works, otherwise "failed to set baudclk rate" reported.
But really don't want to change and hardcode fsl_ssi.c
