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Message-ID:
<PAXPR04MB845970341B5319F81418BBB488A32@PAXPR04MB8459.eurprd04.prod.outlook.com>
Date: Wed, 17 Jul 2024 12:21:12 +0000
From: Peng Fan <peng.fan@....com>
To: Adam Ford <aford173@...il.com>, "S.J. Wang" <shengjiu.wang@....com>
CC: "Peng Fan (OSS)" <peng.fan@....nxp.com>, "abelvesa@...nel.org"
<abelvesa@...nel.org>, "mturquette@...libre.com" <mturquette@...libre.com>,
"sboyd@...nel.org" <sboyd@...nel.org>, "shawnguo@...nel.org"
<shawnguo@...nel.org>, "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
"kernel@...gutronix.de" <kernel@...gutronix.de>, "festevam@...il.com"
<festevam@...il.com>, "imx@...ts.linux.dev" <imx@...ts.linux.dev>,
"linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>, "linux-kernel@...r.kernel.org"
<linux-kernel@...r.kernel.org>, "S.J. Wang" <shengjiu.wang@....com>
Subject: RE: [PATCH V3 05/15] clk: imx: imx8mp-audiomix: remove sdma root
clock
> Subject: Re: [PATCH V3 05/15] clk: imx: imx8mp-audiomix: remove
> sdma root clock
>
> On Mon, Jul 15, 2024 at 8:25 PM Peng Fan <peng.fan@....com>
> wrote:
> >
> > > Subject: Re: [PATCH V3 05/15] clk: imx: imx8mp-audiomix: remove
> sdma
> > > root clock
> > >
> > > On Sun, Jul 14, 2024 at 8:11 PM Peng Fan <peng.fan@....com>
> wrote:
> > > >
> > > > > Subject: Re: [PATCH V3 05/15] clk: imx: imx8mp-audiomix:
> remove
> > > sdma
> > > > > root clock
> > > > >
> > > > > On Fri, Jun 7, 2024 at 8:28 AM Peng Fan (OSS)
> > > <peng.fan@....nxp.com>
> > > > > wrote:
> > > > > >
> > > > > > From: Peng Fan <peng.fan@....com>
> > > > > >
> > > > > > There is an issue:
> > > > > > SDMA3 can't work without setting
> AUDIOMIX_CLKEN0[SDMA2]
> > > (bit-
> > > > > 26) to 1
> > > > > >
> > > > > > The workaround is:
> > > > > > As the reset state of AUDIOMIX_CLKEN0[SDMA2] is enabled,
> we
> > > just
> > > > > need
> > > > > > to keep it on as reset state, don't touch it in kernel, then
> > > > > > every thing is same as before, if we register the clock in
> > > > > > clk-audiomix, then kernel will try to disable it in idle.
> > > > > >
> > > > > > Fixes: 6cd95f7b151c ("clk: imx: imx8mp: Add audiomix block
> > > > > control")
> > > > > > Reviewed-by: Shengjiu Wang <shengjiu.wang@....com>
> > > > > > Signed-off-by: Peng Fan <peng.fan@....com>
> > > > > > ---
> > > > >
> > > > > With this patch,I found it broke the imx8mp-beacon board
> when
> > > > > running audio through a codec connected to sai3. Reverting
> this
> > > > > patch made the crash go away. Is there a way to mark the clock
> > > > > as critical so it doesn't get idled?
> > > >
> > > > Mark it as critical means the blk ctrl needs to be powered on
> always.
> > > >
> > > > You driver touched the SDMA2_ROOT clock?
> > >
> > > I have a WM8962 CODEC connected through sai3. Without this
> patch,
> > > the sound plays just fine. With this patch, I get the following:
> >
> > Try use this for SDMA2.
> > clocks = <&clk IMX8MP_CLK_AUDIO_AHB_ROOT>,
> > <&clk
> > IMX8MP_CLK_AUDIO_AHB_ROOT>;
> >
>
> Unfortunately, that didn't work either. Changing the SDMA2 clocks to
> the above yields the following:
Shengjiu,
Do you have any ideas?
Thanks,
Peng.
>
> [ 20.714987] fsl-micfil-dai 30ca0000.audio-controller: failed to pcm
> register
> [ 20.728904] fsl-aud2htx 30cb0000.aud2htx: failed to pcm register
> [ 20.755070] fsl,imx8mp-audio-xcvr 30cc0000.xcvr: failed to pcm
> register
> [ 20.766373] platform 30c50000.sai: deferred probe pending: fsl-sai:
> PCM DMA init failed
> [ 20.774497] platform 30ca0000.audio-controller: deferred probe
> pending: (reason unknown)
> [ 20.786387] platform 30cb0000.aud2htx: deferred probe pending:
> (reason unknown)
> [ 20.793761] platform sound-dmic: deferred probe pending:
> asoc-simple-card: parse error
> [ 20.806374] platform sound-wm8962: deferred probe pending:
> asoc-simple-card: parse error
> [ 20.814526] platform sound-hdmi: deferred probe pending: imx-
> hdmi:
> snd_soc_register_card failed
> [ 20.826370] platform 30c30000.sai: deferred probe pending: fsl-sai:
> PCM DMA init failed
> [ 20.834429] platform sound-xcvr: deferred probe pending: imx-card:
> XCVR PCM: error getting cpu dai info
> [ 20.846402] platform 30cc0000.xcvr: deferred probe pending:
> (reason unknown)
> [ 20.858378] platform sound-adv7535: deferred probe pending:
> asoc-simple-card: parse error
>
>
> adam
>
> > I will give a look and see how to address the issue.
> >
> > Thanks for the report.
> >
> > Thanks,
> > Peng.
> >
> > >
> > > [ 73.245199] imx-sdma 30e10000.dma-controller: Timeout
> waiting
> > > for CH0 ready
> > > [ 73.252197] ------------[ cut here ]------------
> > > [ 73.256816] WARNING: CPU: 1 PID: 1080 at
> > > kernel/dma/mapping.c:586
> > > dma_free_attrs+0x94/0xc0
> > > [ 73.256832] Modules linked in: overlay af_alg
> dw_hdmi_gp_audio
> > > dw_hdmi_cec tpm_tis_spi snd_soc_hdmi_codec caam_jr
> tpm_tis_core
> > > caamhash_desc caamalg_desc crypto_engine authenc libdes
> hantro_vpu
> > > v4l2_jpeg v4l2_vp9 v4l2_h264 v4l2_mem2mem
> videobuf2_dma_contig
> > > videobuf2_memops videobuf2_v4l2 videodev imx8mp_hdmi_tx
> btnxpuart
> > > nvme videobuf2_common dw_hdmi mc nvme_core etnaviv
> imx_lcdif
> > > bluetooth fsl_imx8_ddr_perf drm_display_helper dwmac_imx
> gpu_sched
> > > phy_fsl_samsung_hdmi imx8mp_hdmi_pvi drm_dma_helper
> samsung_dsim
> > > snd_soc_fsl_sai stmmac_platform snd_soc_fsl_xcvr
> snd_soc_fsl_micfil
> > > snd_soc_fsl_aud2htx stmmac adv7511 ecdh_generic imx_pcm_dma
> > > snd_soc_fsl_utils ecc pcs_xpcs cec tcpci flexcan tcpm hd3ss3220
> > > snd_soc_wm8962 spi_imx can_dev typec at24 caam rtc_pcf85363
> rtc_snvs
> > > error snvs_pwrkey imx8mm_thermal crct10dif_ce
> snd_soc_imx_hdmi
> > > coresight_tmc snd_soc_imx_card snd_soc_simple_card
> coresight_funnel
> > > snd_soc_simple_card_utils display_connector snd_soc_dmic
> coresight
> > > drm_kms_helper imx_cpufreq_dt imx_sdma mwifiex_sdio
> > > [ 73.256997] mwifiex cfg80211 rfkill fuse drm backlight ipv6
> > > [ 73.257015] CPU: 1 UID: 0 PID: 1080 Comm: speaker-test Not
> > > tainted
> > > 6.10.0-rc7-next-20240709-ga90ee5931efe-dirty #9
> > > [ 73.257022] Hardware name: Beacon EmbeddedWorks
> i.MX8MPlus
> > > Development kit (DT)
> > > [ 73.257025] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -
> SSBS
> > > BTYPE=--)
> > > [ 73.257031] pc : dma_free_attrs+0x94/0xc0
> > > [ 73.257037] lr : dma_free_attrs+0x50/0xc0
> > > [ 73.257041] sp : ffff800084f6b980
> > > [ 73.257043] x29: ffff800084f6b980 x28: 0000000000000010 x27:
> > > 00000000000003c2
> > > [ 73.257051] x26: 0000000000000005 x25: 0000000000000010
> x24:
> > > 0000000000000000
> > > [ 73.257057] x23: 00000000c5504000 x22: 0000000000000000
> x21:
> > > ffff800083183000
> > > [ 73.257064] x20: 00000000000000c0 x19: ffff0000c0e54410 x18:
> > > 0000000000000006
> > > [ 73.257071] x17: 0000000000000000 x16: 0000000000000000
> x15:
> > > ffff800084f6b330
> > > [ 73.257078] x14: 0000000000000000 x13: ffff8000826845d8
> x12:
> > > 0000000000000639
> > > [ 73.257085] x11: 0000000000000213 x10: ffff8000826dc5d8 x9 :
> > > ffff8000826845d8
> > > [ 73.257092] x8 : 00000000ffffefff x7 : ffff8000826dc5d8 x6 :
> > > 0000000000000040
> > > [ 73.257098] x5 : 0000000000000000 x4 : 0000000000000000
> x3 :
> > > 00000000c5504000
> > > [ 73.257105] x2 : ffff800083183000 x1 : 0000000000000000 x0 :
> > > 00000000000000c0
> > > [ 73.257112] Call trace:
> > > [ 73.257115] dma_free_attrs+0x94/0xc0
> > > [ 73.257121] sdma_free_bd+0x60/0x6c [imx_sdma]
> > > [ 73.257130] sdma_transfer_init+0x1e8/0x270 [imx_sdma]
> > > [ 73.257137] sdma_prep_dma_cyclic+0x74/0x200 [imx_sdma]
> > > [ 73.257143] snd_dmaengine_pcm_trigger+0xd8/0x18c
> > > [ 73.257152] dmaengine_pcm_trigger+0x18/0x24
> > > [ 73.257159] snd_soc_pcm_component_trigger+0x170/0x21c
> > > [ 73.257168] soc_pcm_trigger+0xdc/0x1c8
> > > [ 73.257175] snd_pcm_do_start+0x44/0x70
> > > [ 73.257183] snd_pcm_action_single+0x48/0xa4
> > > [ 73.257189] snd_pcm_action+0x80/0x9c
> > > [ 73.257195] snd_pcm_start+0x24/0x30
> > > [ 73.257203] __snd_pcm_lib_xfer+0x6a4/0x7d8
> > > [ 73.257208] snd_pcm_common_ioctl+0x1140/0x1780
> > > [ 73.257215] snd_pcm_ioctl+0x34/0x4c
> > > [ 73.257222] __arm64_sys_ioctl+0xac/0xf0
> > > [ 73.257231] invoke_syscall+0x48/0x114
> > > [ 73.257239] el0_svc_common.constprop.0+0x40/0xe0
> > > [ 73.257246] do_el0_svc+0x1c/0x28
> > > [ 73.257252] el0_svc+0x34/0xd8
> > > [ 73.257260] el0t_64_sync_handler+0x120/0x12c
> > > [ 73.257267] el0t_64_sync+0x190/0x194
> > > [ 73.257273] ---[ end trace 0000000000000000 ]---
> > > [ 73.565659] fsl-sai 30c30000.sai: ASoC: error at
> > > soc_component_trigger on 30c30000.sai: -12
> > >
> > > Write error: -5,Input/output erro[ 76.767120] imx-sdma
> > > 30e10000.dma-controller: Timeout waiting for CH0 ready
> > >
> > > No sound is heard.
> > >
> > > I haven't looked far into the driver to see what was touched, but I
> > > was able to reproduce this by enabling and disabling the patch
> > > several times, so it's repeatable. imx-sdma 30e10000.dma-
> controller
> > > seems to correspond to sdma2.
> > >
> > > adam
> > > >
> > > > Regards,
> > > > Peng.
> > > >
> > > > >
> > > > > adam
> > > > > > drivers/clk/imx/clk-imx8mp-audiomix.c | 1 -
> > > > > > 1 file changed, 1 deletion(-)
> > > > > >
> > > > > > diff --git a/drivers/clk/imx/clk-imx8mp-audiomix.c
> > > > > > b/drivers/clk/imx/clk-imx8mp-audiomix.c
> > > > > > index b381d6f784c8..88d8ba975b5a 100644
> > > > > > --- a/drivers/clk/imx/clk-imx8mp-audiomix.c
> > > > > > +++ b/drivers/clk/imx/clk-imx8mp-audiomix.c
> > > > > > @@ -172,7 +172,6 @@ static struct
> clk_imx8mp_audiomix_sel
> > > sels[]
> > > > > = {
> > > > > > CLK_GATE("ocrama", OCRAMA_IPG),
> > > > > > CLK_GATE("aud2htx", AUD2HTX_IPG),
> > > > > > CLK_GATE("earc_phy", EARC_PHY),
> > > > > > - CLK_GATE("sdma2", SDMA2_ROOT),
> > > > > > CLK_GATE("sdma3", SDMA3_ROOT),
> > > > > > CLK_GATE("spba2", SPBA2_ROOT),
> > > > > > CLK_GATE("dsp", DSP_ROOT),
> > > > > > --
> > > > > > 2.37.1
> > > > > >
> > > > > >
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