i.MX ProcessorsのトピックRe: imx6 SPI errors

i.MX ProcessorsのトピックRe: imx6 SPI errors https://community.nxp.com/t5/i-MX-Processors/imx6-SPI-errors/m-p/732123#M113923 <HTML><HEAD></HEAD><BODY><P>Hi, thanks for your reply !</P><P></P><P>We are using #include "imx6dl.dtsi" in the dts file, and so everything added by that is unchanged. Below are all our SPI related dts changes:</P><P></P><P>pin control:</P><P>pinctrl_ecspi1: ecspi1grp {<BR /> fsl,pins = <<BR /> MX6QDL_PAD_DISP0_DAT22__ECSPI1_MISO 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT21__ECSPI1_MOSI 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT20__ECSPI1_SCLK 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT23__GPIO5_IO17 0x1b0b0<BR /> MX6QDL_PAD_DISP0_DAT15__GPIO5_IO09 0x1b0b0<BR /> >;<BR /> };</P><P>pinctrl_ecspi2: ecspi2grp {<BR /> fsl,pins = <<BR /> MX6QDL_PAD_DISP0_DAT17__ECSPI2_MISO 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT16__ECSPI2_MOSI 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT19__ECSPI2_SCLK 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT18__GPIO5_IO12 0x1b0b0<BR /> MX6QDL_PAD_EIM_D25__GPIO3_IO25 0x1b0b0<BR /> >;<BR /> };</P><P>pinctrl_ecspi3: ecspi3grp {<BR /> fsl,pins = <<BR /> MX6QDL_PAD_DISP0_DAT2__ECSPI3_MISO 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT1__ECSPI3_MOSI 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT0__ECSPI3_SCLK 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT3__GPIO4_IO24 0x1b0b0</P><P>>;<BR /> };</P><P></P><P>SPI devices:</P><P></P><P>&ecspi1 {<BR />    fsl,spi-num-chipselects = <2>;<BR />    cs-gpios = <&gpio5 17 0>, <&gpio5 9 0>;<BR />    pinctrl-names = "default";<BR />    pinctrl-0 = <&pinctrl_ecspi1>;<BR />    status = "okay";</P><P></P><P>   spidev0: spi@0 {<BR />       compatible = "company,SPIdevice";<BR />       reg = <0>;<BR />       spi-max-frequency = <5000000>;<BR />    };</P><P>   spidev1: spi@1 {<BR />       compatible = "<SPAN>company,SPIdevice</SPAN>";<BR />       reg = <1>;<BR />       spi-max-frequency = <5000000>;<BR />    };<BR />};</P><P>&ecspi2 {<BR />    fsl,spi-num-chipselects = <2>;<BR />    cs-gpios = <&gpio5 12 0>, <&gpio3 25 0>;<BR />    pinctrl-names = "default";<BR />    pinctrl-0 = <&pinctrl_ecspi2>;<BR />    status = "okay";</P><P>   </P><P>   spidev2: spi@0 {<BR />       compatible = "<SPAN>company,SPIdevice</SPAN>";<BR />       reg = <0>;<BR />       spi-max-frequency = <5000000>;<BR />   };</P><P>   spidev3: spi@1 {<BR />       compatible = "<SPAN>company,SPIdevice</SPAN>";<BR />       reg = <1>;<BR />       spi-max-frequency = <5000000>;<BR />    };<BR />};</P><P>&ecspi3 {<BR />    fsl,spi-num-chipselects = <1>;<BR />    cs-gpios = <&gpio4 24 0>;<BR />    pinctrl-names = "default";<BR />    pinctrl-0 = <&pinctrl_ecspi3>;<BR />    status = "okay";</P><P></P><P>   spidev4: spi@0 {</P><P>      compatible = "<SPAN>company,SPIdevice</SPAN>";<BR />       reg = <0>;<BR />       spi-max-frequency = <5000000>;<BR />    };<BR />};</P></BODY></HTML> Wed, 13 Jun 2018 08:47:08 GMT stasgil 2018-06-13T08:47:08Z imx6 SPI errors https://community.nxp.com/t5/i-MX-Processors/imx6-SPI-errors/m-p/732121#M113921 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>We are using a custom board with the imx6qdl processor, with our image based on freescale community bsp for yocto krogoth release.</P><P>Kernel version: 4.1.15</P><P>Yocto branch: krogoth, 2.0ga</P><P></P><P>We are extensively using SPI to communicate with several devices(texas istruments microcontrollers) on the SPI bus. Please find our spi-imx.c driver attached.</P><P></P><P>We are encountering several different errors:</P><P></P><P>    1) Below are the results of attempting SPI transactions of every length from 0 to 200 16-bit words. The following ranges of message lengths are affected, in bytes:</P><P>96-126, 160-190, 224-254, 288-318, 352-382 (decimal).</P><P>Transactions with lengths falling in these ranges always fail. This is completely consistent and reproducible.</P><P> </P><P>spi_master spi1: I/O Error in DMA RX:60</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:62</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:64</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:66</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:68</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:6a</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:6c</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:6e</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:70</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:72</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:74</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:76</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:78</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:7a</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:7c</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:7e</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:a0</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:a2</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:a4</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:a6</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:a8</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:aa</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:ac</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:ae</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:b0</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:b2</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:b4</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:b6</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:b8</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:ba</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:bc</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:be</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:e0</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:e2</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:e4</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:e6</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:e8</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:ea</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:ec</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:ee</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:f0</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:f2</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:f4</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:f6</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:f8</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:fa</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:fc</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:fe</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:120</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:122</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:124</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:126</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:128</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:12a</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:12c</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:12e</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:130</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:132</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:134</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:136</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:138</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:13a</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:13c</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:13e</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:160</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:162</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:164</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:166</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:168</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:16a</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:16c</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:16e</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:170</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:172</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:174</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:176</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:178</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:17a</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:17c</P><P>spi_master spi1: failed to transfer one message from queue</P><P>spi_master spi1: I/O Error in DMA RX:17e</P><P>spi_master spi1: failed to transfer one message from queue</P><P></P><P>   2)  Additionally, there is the very rare intermittent fault, that shows up like this:</P><P>May 24 16:15:08 imx6dl-ctems kernel: spi_master spi2: I/O Error in RX tail</P><P>May 24 16:15:08 imx6dl-ctems kernel: spi_master spi2: failed to transfer one message from queue</P><P>May 24 16:15:11 imx6dl-ctems kernel: spi_master spi2: I/O Error in DMA RX:8c</P><P>May 24 16:15:11 imx6dl-ctems kernel: spi_master spi2: failed to transfer one message from queue</P><P>The second error here is caused by attempting to retry the transaction.</P><P>This intermittent fault shows up very roughly once in 100000 transactions.</P><P></P><P>I have tried the fix from this question : <A href="https://community.nxp.com/thread/339957">imx6 SPI in DMA mode sometime throws "I/O Error in DMA RX"</A>  but that didn't work</P><P></P><P>According to this question: <A href="https://community.nxp.com/thread/452083">SPI DMA support in imx6</A>  and documentation, DMA is not supported in SPI by default. So, how come that all the errors come from the DMA handling code ?</P><P></P><P>I have not yet tried the patchset from <A _jive_internal="true" class="link-titled" href="https://community.nxp.com/message/888805?commentID=888805#comment-888805" title="https://community.nxp.com/message/888805?commentID=888805#comment-888805">https://community.nxp.com/message/888805?commentID=888805#comment-888805</A>  , but i would like to ask, if there is anywhere i can find an up to date spi-imx.c driver that is compatible with kernel 4.1.15 ?</P></BODY></HTML> Tue, 29 May 2018 11:09:49 GMT https://community.nxp.com/t5/i-MX-Processors/imx6-SPI-errors/m-p/732121#M113921 stasgil 2018-05-29T11:09:49Z Re: imx6 SPI errors https://community.nxp.com/t5/i-MX-Processors/imx6-SPI-errors/m-p/732122#M113922 <HTML><HEAD></HEAD><BODY><P>can you show me your spi setting in the device tree file?</P></BODY></HTML> Tue, 12 Jun 2018 04:08:00 GMT https://community.nxp.com/t5/i-MX-Processors/imx6-SPI-errors/m-p/732122#M113922 jimmychan 2018-06-12T04:08:00Z Re: imx6 SPI errors https://community.nxp.com/t5/i-MX-Processors/imx6-SPI-errors/m-p/732123#M113923 <HTML><HEAD></HEAD><BODY><P>Hi, thanks for your reply !</P><P></P><P>We are using #include "imx6dl.dtsi" in the dts file, and so everything added by that is unchanged. Below are all our SPI related dts changes:</P><P></P><P>pin control:</P><P>pinctrl_ecspi1: ecspi1grp {<BR /> fsl,pins = <<BR /> MX6QDL_PAD_DISP0_DAT22__ECSPI1_MISO 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT21__ECSPI1_MOSI 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT20__ECSPI1_SCLK 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT23__GPIO5_IO17 0x1b0b0<BR /> MX6QDL_PAD_DISP0_DAT15__GPIO5_IO09 0x1b0b0<BR /> >;<BR /> };</P><P>pinctrl_ecspi2: ecspi2grp {<BR /> fsl,pins = <<BR /> MX6QDL_PAD_DISP0_DAT17__ECSPI2_MISO 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT16__ECSPI2_MOSI 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT19__ECSPI2_SCLK 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT18__GPIO5_IO12 0x1b0b0<BR /> MX6QDL_PAD_EIM_D25__GPIO3_IO25 0x1b0b0<BR /> >;<BR /> };</P><P>pinctrl_ecspi3: ecspi3grp {<BR /> fsl,pins = <<BR /> MX6QDL_PAD_DISP0_DAT2__ECSPI3_MISO 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT1__ECSPI3_MOSI 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT0__ECSPI3_SCLK 0x100b1<BR /> MX6QDL_PAD_DISP0_DAT3__GPIO4_IO24 0x1b0b0</P><P>>;<BR /> };</P><P></P><P>SPI devices:</P><P></P><P>&ecspi1 {<BR />    fsl,spi-num-chipselects = <2>;<BR />    cs-gpios = <&gpio5 17 0>, <&gpio5 9 0>;<BR />    pinctrl-names = "default";<BR />    pinctrl-0 = <&pinctrl_ecspi1>;<BR />    status = "okay";</P><P></P><P>   spidev0: spi@0 {<BR />       compatible = "company,SPIdevice";<BR />       reg = <0>;<BR />       spi-max-frequency = <5000000>;<BR />    };</P><P>   spidev1: spi@1 {<BR />       compatible = "<SPAN>company,SPIdevice</SPAN>";<BR />       reg = <1>;<BR />       spi-max-frequency = <5000000>;<BR />    };<BR />};</P><P>&ecspi2 {<BR />    fsl,spi-num-chipselects = <2>;<BR />    cs-gpios = <&gpio5 12 0>, <&gpio3 25 0>;<BR />    pinctrl-names = "default";<BR />    pinctrl-0 = <&pinctrl_ecspi2>;<BR />    status = "okay";</P><P>   </P><P>   spidev2: spi@0 {<BR />       compatible = "<SPAN>company,SPIdevice</SPAN>";<BR />       reg = <0>;<BR />       spi-max-frequency = <5000000>;<BR />   };</P><P>   spidev3: spi@1 {<BR />       compatible = "<SPAN>company,SPIdevice</SPAN>";<BR />       reg = <1>;<BR />       spi-max-frequency = <5000000>;<BR />    };<BR />};</P><P>&ecspi3 {<BR />    fsl,spi-num-chipselects = <1>;<BR />    cs-gpios = <&gpio4 24 0>;<BR />    pinctrl-names = "default";<BR />    pinctrl-0 = <&pinctrl_ecspi3>;<BR />    status = "okay";</P><P></P><P>   spidev4: spi@0 {</P><P>      compatible = "<SPAN>company,SPIdevice</SPAN>";<BR />       reg = <0>;<BR />       spi-max-frequency = <5000000>;<BR />    };<BR />};</P></BODY></HTML> Wed, 13 Jun 2018 08:47:08 GMT https://community.nxp.com/t5/i-MX-Processors/imx6-SPI-errors/m-p/732123#M113923 stasgil 2018-06-13T08:47:08Z Re: imx6 SPI errors https://community.nxp.com/t5/i-MX-Processors/imx6-SPI-errors/m-p/732124#M113924 <HTML><HEAD></HEAD><BODY><P>I could not find the root cause, but the I/O Error in DMA RX seem to have been fixed by updating the spi-imx.c driver to a version from the Boundary Devices github page: <A class="link-titled" href="https://github.com/boundarydevices/linux-imx6/tree/boundary-imx_4.1.15_2.0.0_ga" title="https://github.com/boundarydevices/linux-imx6/tree/boundary-imx_4.1.15_2.0.0_ga">GitHub - boundarydevices/linux-imx6 at boundary-imx_4.1.15_2.0.0_ga</A> </P><P></P><P>Compared to the .c file from krogoth branch, the new one seems to be a lot reliable, with DMA transfer function restructured and workarounds for several silicon ERRATAS added.</P><P></P><P>I was unable to do anything about the I/O Error in RX tail, so if anyone has any input on this, i would greatly appreciate it :smileyhappy:</P><P></P><P>Thanks</P></BODY></HTML> Wed, 04 Jul 2018 07:47:34 GMT https://community.nxp.com/t5/i-MX-Processors/imx6-SPI-errors/m-p/732124#M113924 stasgil 2018-07-04T07:47:34Z