gpu & vpu probe issue

[zohanlin]

Dear guys,

I have one OS yocto 2.4 rock (kernel 4.9.88) which runs in imx6q, the gpu and vpu work well.

So I try another OS yocto 3.1 Zeus(kernel 5.4.47)which runs in imx6q, the gpu and vpu don't work.

Log as below

[    3.850835] galcore 130000.gpu: ignoring dependency for device, assuming no driver
[    3.858990] mxc_vpu 2040000.vpu_fsl: ignoring dependency for device, assuming no driver

Could somebody help me?

[igorpadykov]

Hi zohanlin

one can try to test vpu,gpu on nxp sabresd reference board with Demo Image

i.MX 6QuadPlus, i.MX 6Quad, i.MX 6DualLite, i.MX 6SoloX Boards​

https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applicat...

Best regards
igor

[zohanlin · Accepted solution]

Hi igor,

I found the reason that is my custom board remove the pmic.

So I comment some dts item as below

/*
&reg_arm {
       vin-supply = <&sw1a_reg>;
};

&reg_pu {
       vin-supply = <&sw1c_reg>;
};

&reg_soc {
       vin-supply = <&sw1c_reg>;
};
*/

Now the GPU & VPU can work well.

[zohanlin]

I found a post about the issue.

https://community.nxp.com/t5/i-MX-Processors/Problem-with-galcore-GPU-module-on-imx6-Solo/td-p/10560... 

Bio_TICFSL said : Sorry and yes the issue is on DTBs.

Is it really?

[zohanlin]

Hi igor,

My board is not EVK, so I could not test the demo image.

I downloaded linux-imx 5.4.70, and the version has the same problem.

Could you have other suggestions?

[zohanlin]

I tried to modify dts and set #power-domain-cells by <1>

--------------------------------------------------------------------------

pd_pu: power-domain@1 {
reg = <1>;
#power-domain-cells = <1>;
power-supply = <&reg_pu>;
clocks = <&clks IMX6QDL_CLK_GPU3D_CORE>,
<&clks IMX6QDL_CLK_GPU3D_SHADER>,
<&clks IMX6QDL_CLK_GPU2D_CORE>,
<&clks IMX6QDL_CLK_GPU2D_AXI>,
<&clks IMX6QDL_CLK_OPENVG_AXI>,
<&clks IMX6QDL_CLK_VPU_AXI>;
};

Now the log is

root@imx6qsabresd:~# dmesg | grep -i "gpu"
[ 3.628942] OF: /soc/gpu@00130000: #power-domain-cells = 1 found -1
[ 4.328302] galcore: probe of 130000.gpu failed with error -22

root@imx6qsabresd:~# dmesg | grep -i "gal"
[ 3.291714] egalax_ts 1-0004: Failed to switch to I2C interface
[ 3.298098] egalax_ts 2-0004: Failed to switch to I2C interface
[ 3.636502] Galcore version 6.4.3.p0.286725
[ 4.291168] [galcore]: Feature database is not found,chipModel=0x0, chipRevision=0x0, productID=0x0, ecoID=0x0, customerID=0x0
[ 4.328302] galcore: probe of 130000.gpu failed with error -22

root@imx6qsabresd:~# dmesg | grep -i "vpu"
[ 4.334554] OF: /soc/aips-bus@2000000/vpu_fsl@2040000: #power-domain-cells = 1 found -1
[ 4.343296] mxc_vpu 2040000.vpu_fsl: VPU initialized