Re: Patch submission to Freescale kernel

[Eric Nelson <eric.nelson@boundarydevices.com>]

Hi Gary,

On 12/01/2014 09:18 PM, Gary Bisson wrote:
> Hi,
> 
> I was wondering what was the procedure to submit a patch to the
> Freescale maintained kernel:
> http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/
> 
> I've just made a patch that fixes the display issue for rev T1.0 of the
> SoC which has been previously reported:
> https://lists.yoctoproject.org/pipermail/meta-freescale/2014-May/008553.html
> 
> "mxc_sdc_fb fb.27: timeout when waiting for flip irq"
> 
> Then, I'd like to send that patch over to the fslc and mainline kernels
> as they seem to have the issue by checking their source code.
> 

Cool! That discussion on i.MX Community ended with the realization
that the issue was specific to TO 1.0 silicon.

Are you running on that silicon version? (this is shown in the first
few lines of U-Boot output)

> Regarding the mainline kernel, I can't seem to get the HDMI (on
> nitrogen6x) to work at all no matter which revision/board I use. Looking
> into the source code I've seen the evolution of the
> drivers/staging/imx-drm driver which tends to say that HDMI is
> supported. If so, would anyone have some insights on which command line
> to pass the kernel in order to get the mainline kernel to recognize the
> HDMI display properly. So far the init seems to be fine but fb0 sysfs
> modes is just rubbish.
> [    1.863506] imx-drm display-subsystem: bound imx-ipuv3-crtc.0 (ops
> ipu_crtc_ops)
> [    1.863719] imx-drm display-subsystem: bound imx-ipuv3-crtc.1 (ops
> ipu_crtc_ops)
> [    1.863955] imx-drm display-subsystem: bound imx-ipuv3-crtc.4 (ops
> ipu_crtc_ops)
> [    1.864168] imx-drm display-subsystem: bound imx-ipuv3-crtc.5 (ops
> ipu_crtc_ops)
> [    1.867758] imx-hdmi 120000.hdmi: Detected HDMI controller
> 0x13:0xa:0xa0:0xc1
> [    1.868066] imx-drm display-subsystem: bound 120000.hdmi (ops hdmi_ops)
> [    1.868537] imx-drm display-subsystem: bound
> 2000000.aips-bus:ldb@020e0008 (ops imx_ldb_ops)
> 

Hmmm. This worked for me the last time I checked (using Shawn's tree).

I'll double check and report back.

Regards,


Eric