Posts made by george

@plumlis
The following is what I have compiled and can be used directly.
RKDevTool_v3.13_for_window.rar

@plumlis

sudo ln -s /usr/bin/python3.12 /usr/bin/python

@plumlis
Suggest updating uboot to the latest version and then trying USB BOOT. The latest development branch has been optimized for some USB drives. Of course, you can also write images to EMMC through UMS.

@plumlis
Let me briefly introduce the current situation of the NAND flash industry. The best A-class die is used as a high-capacity and high-value storage device for first tier brands such as SSDs and EMMCs. The worse one is used for second tier brands such as EMMCs and NAND FLASH, and the worse one is used for a large number of bad fast devices. The 8GB capacity can be reduced to 4G or 2G for USB drives or T cards. There is even worse junk die, which will appear on the T card that costs a few yuan on Mouduoduo. So if doing system mirroring, it is recommended to use SSD or SATA portable hard drives, as both performance and reliability are the best.

@plumlis
The AX200 has been tested before and can be used, but the AX210 is still not working. Waiting for subsequent kernel upgrades. The model shown in the figure has been previously verified.

@plumlis
The battery of the RTC connector has a spacing of 0.8mm. From the current phenomenon, it is not that the hardware RTC cannot save time, but rather that the hardware RTC time has not been synchronized with the system. So adding this battery won't make any changes.

@plumlis
The kernel version 6.1 will support it and is currently being adapted.

@happyday
以下结果来自大模型：
在Linux中，可以通过多种方式将应用程序绑定到特定的CPU上执行，这样可以减少上下文切换，提高性能。以下是一些常用的方法：

使用 taskset 命令:
taskset 命令可以用来限制一个进程只能使用指定的CPU或CPU集合。使用以下命令启动一个应用程序并将其绑定到特定的CPU：

taskset -c 0,1,2 my_application
这将允许 my_application 只在CPU 0、1和2上运行。

使用 nice 和 renice 命令:
nice 命令可以在启动时设置一个进程的调度优先级，而 renice 可以更改一个已经运行的进程的优先级。这不是直接绑定CPU，但可以影响进程的调度。

nice -n 10 --adjustment=+5 my_application
使用 cgroups:
cgroups（控制组）是一种Linux内核特性，它可以将进程分组，并为这些组应用特定的系统资源限制。通过 cgroups，你可以将进程绑定到特定的CPU。

首先，创建一个新的cgroup：

sudo cgcreate -g cpuset:/my_group
然后，添加CPU到这个cgroup：

sudo echo 0-2 > /sys/fs/cgroup/cpuset/my_group/cpuset.cpus
接下来，将应用程序添加到这个cgroup：

sudo cgclassify -g cpuset:my_group my_application
使用 numactl 命令:
numactl 命令用于控制NUMA（非统一内存访问）系统中的CPU和内存亲和性。它也可以用于将进程绑定到特定的CPU。

numactl --physcpubind=0,1,2 my_application
使用 sched_setaffinity 系统调用:
在编程时，可以使用 sched_setaffinity 系统调用来设置进程的CPU亲和性。这需要在编写应用程序时进行设置。

使用 top 或 htop 工具:
在使用 top 或 htop 时，可以通过交互式命令将进程绑定到特定的CPU。在 htop 中，可以使用 ~ 键来切换“CPU绑定”模式，然后选择CPU。

编辑 /etc/security/limits.conf:
对于基于System V的进程控制，可以在 limits.conf 文件中设置CPU亲和性。

请注意，绑定CPU可能会影响系统的调度器性能，并且不是所有的应用程序都会从CPU绑定中受益。在进行CPU绑定之前，应该仔细考虑应用程序的需求和系统的整体性能。

@anernest
I'm really sorry for not understanding. What do you need to upgrade?

@mainbord
Coolpi4b and cm5 evb currently support mainline kernels above 6.8, but laptops do not support mainline kernels due to eDP display drivers. So it will be a little later. Currently undergoing debugging. Looking forward to the next main version being released. Thank you for your support.

@plumlis
Provide a basic image, the system can start normally, WIFI is working properly, and support for GPU and VPU has not been added yet.

@plumlis
Firefox defaults to calling ffmpeg decoding, and we have added hardware decoding support for rkmpp to the local ffmpeg. So you just need to update the ffmpeg version to the standard version published on the official website.

@happyday
参考如下文档。
Rockchip_Developer_Guide_Linux_SPI_CN.pdf

@plumlis
Firstly, there is no need to add a separate RTC battery on the motherboard. RTC defaults to using the system's 38WH battery storage time.
The issue of not being able to save time is a system software issue, not an RTC hardware issue. This can be confirmed by the following command:

cat  /proc/driver/rtc

Regarding how to synchronize the hardware RTC time to the system, the following command can be used:

timedatectl set-local-rtc 1 --adjust-system-clock

We will try to modify and add it to the system later. Thank you for your support.

@plumlis
This issue was also tested in version 22.04 due to compatibility issues with hardware decoding of RK in firefox in deb format. The use of Snap version cannot call the hardware decoder of RK, but there is no crash issue with video soft decoding, or although the local browser of Chromium cannot call the hardware decoder of RK yet, the software decoder can meet daily use.

@plumlis
First of all, thank you very much for the support of your Coolpi product.
Fedora's image will release a basic version of the image in the near future, and then optimize support for GPU, VPU, and more.
We will evaluate the support for EDK2 in the near future. The current main focus is on adapting to the 6.1 kernel.

@yaitoro
Yes, this is the official store address.

@plumlis
对，就是这个地方，自行修改就好了。

@happyday
需要从github下载代码到机器，然后修改，编译，替换。

@happyday
你要修改dts文件，然后再编译生成dtb，再替换。

@happyday
源码，arch/arm64/boot/dts/rockchip/rk3588s-cp4.dts

@jugg
这个看log信息是EDID的IIC通讯出错。可以清理一下金属指，然后重新安装核心板。

@plumlis
Refer to the disassembly video below, the screw lengths are differentiated, please note.
https://www.bilibili.com/video/BV1UZ421J7RB/?spm_id_from=333.999.list.card_archive.click

@plumlis
Just confirmed with the warehouse that there are delivery cables together. Please check carefully.
The SSD part has not undergone comprehensive testing yet, so it is currently difficult to recommend specific models. We will update it after the code is completed. Thank you for your support.

@plumlis

• 32+64 configuration is emmc, 32+1T is nvme
• At present, the system only supports booting from emmc, and the machine does not have a TF card interface. After upgrading the NVME driver in uboot, it can be booted from NVME.
• The typec interface can support PD charging, but currently it can only be used when turned on. The shutdown state can only be charged through a DC adapter.
• The current shipped versions are all V20 motherboards.
• We can provide models of touch screens that you can purchase through Taobao or other platforms. The touch model requires replacement of the ribbon cable. If you are in China, I can give you a free one as a gift.
• The model of the touch screen is: BOE NV140FHM-T07

@plumlis

• Thank you very much for your interest in Coolpi laptops.
• We have been working hard to adapt the display screen. Currently, there are two complete models with a resolution of 1080P, one of which supports touch function. Last month, we adapted a model with a 4K resolution, which has no problem with the function. However, there is some interference in the structure, so it cannot be used temporarily. We will continue to adapt to more models in the future, and will eventually announce them in the community in the form of a support list. Thank you for your support.
• By the way, there are currently two specifications of ribbon cables: eDP 30 and eDP 40.
• We can support users to replace their LCDs themselves, and we will provide a video tutorial, provided that they have some hands-on skills.
• The adaptation of the operating system is shown in the following figure and will continue to be updated.
  
  【淘宝】https://m.tb.cn/h.gcdJ2ZFOLCnjPzv?tk=vJiPWGKdPab ZH4920 「RK3588开源32G内存LINUX笔记本电脑DIY开发套件14寸Ubuntu麒麟」
  点击链接直接打开 或者 淘宝搜索直接打开

@mainbord
1.RK3588 MALIG610 can only support OPENGLES-3.2, I am not sure if this 4.5 is compatible. The GPU driver of Coolpi will be switched to Panthor in the future.

2.Confirm the hardware version of the laptop. If the hardware is V10 and then update the V20 image, there will be a power option issue.

@plumlis
The current default model for 1080P LCD is NV140FHM-N42,The specification parameters are as follows：

@plumlis
The machine can support sleep mode by default. If the laptop screen is closed, the machine will automatically enter sleep mode.
The battery is of 38WH specification, with a nominal 5000mAh/7.6V. The power consumption of the entire machine in sleep mode is 8G+64G 7.4V/6MA, 32G+64G 7.4V/8MA, so the theoretical longest sleep time is 833 hours, exceeding one month.