Cannot change the resolution on IMX-RT1050

wigcheng commented 6 years ago

Only support 470x272 when I setting other resolution, I find out the key is in arch/arm/mach-imxrt105x/clock.c, it seems be fixed to 470x272 official panel setting, please provide a way to change it, thanks!

gvcode1 commented 5 years ago

Hi regarding the u-boot of imxrt1050, where can I find the source code of u-boot?

sposelenov-emcraft commented 5 years ago

Hello,

U-Boot sources are here https://github.com/EmcraftSystems/u-boot-vybrid. Master branch is imxrt105x, the last official release branch for is IMXRT105X is linux-cortexm-2.5.1.

-- Regards, Sergei Poselenov, Emcraft Systems

On Wed, 12 Dec 2018 22:10:45 -0800 hbaokw notifications@github.com wrote:

Hi regarding the u-boot of imxrt1050, where can I find the source code of u-boot?

gvcode1 commented 5 years ago

Hello Sergei, and I also tried this u-boot a little bit, actually I am now want to use u-boot to load my application(Now I am trying to use an helloworld project link to the SDRAM 0x80000000), but if I use go command to jump to the entry of 0x80000004, then the hardware will reboot immediately, just does not have any idea, maybe the u-boot need to modify a little bit if I want to load my simple application.

Do you have any idea about such problem?

Best Regards, Henry

sposelenov-emcraft commented 5 years ago

Hello,

On Sun, 23 Dec 2018 06:37:47 -0800 hbaokw notifications@github.com wrote:

Hello Sergei, and I also tried this u-boot a little bit, actually I am now want to use u-boot to load my application(Now I am trying to use an helloworld project link to the SDRAM 0x80000000), but if I use go command to jump to the entry of 0x80000004, then the hardware will reboot immediately, just does not have any idea, maybe the u-boot need to modify a little bit if I want to load my simple application.

Do you have any idea about such problem?

Check the start address of your application, see with readelf in the ELF version of the binary.
Check the binary format of your application. I must be pure binary, not ELF, not hex or any other binary format.
As per the ARM Thumb specification, the execution address must have a lower bit set, ie if your application start address () is 0x80000004, then the U-Boot command would be "go 0x80000005".

Hope this helps.

Regards, Sergei

Best Regards, Henry

EmcraftSystems / u-boot

Cannot change the resolution on IMX-RT1050 #9