LINUX SC16IS752 DRIVER DOWNLOAD

But besides that I need to recompile the kernel and so on I I read about that here: Now I trying to modify this driver for I2C work. This is the main, that should be executed to perform the echo function. If you look at other SPI overlays e. This is wrong, although I'm not sure what will happen when you try.

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If you look at other SPI overlays e. Priorities won't solve your problem completely anyway, because there's always a chance for another unrelated IRQ to arise between your IRQ and the process.

Context switch surely takes some time, but 25ms looks way too long linuxx that only; maybe a higher priority process -es is running.

I will play around with this and let you know the results. Loaded overlay 'i2c-rtc' But besides that I need to recompile the kernel and so on I I read about that here: I've tried to play with the priorities and scheldule policies, but it also did not give the desired results.

linux SC16IS driver,Receive Line Status error | NXP Community

Failed to load overlay 'spi-gpio-cs'. Loaded overlay 'sc16isspi' I will try compiling the kernel using the kernel build tutorial in the documentation section of the site.

Linux Kernel sources already has driver for this chip, but only in SPI mode. Therefore, this is the MCU configuration: Is rpi-upgrade still possible or do I have to compile the kernel after each upgrade?

I'm using the default 4. Board index All times are UTC. Yes of course I can follow the instructions on libux side, but do I still get updates after recompiling the kernel? I started compiling locally but a quick search in the forum tells me it will take 5hs or more.

SC16IS752 - Bare metal example project

Email Required, but never shown. I 2 C data write and read operations. I'm trying to port an old project in which, over the years, I ran out of RAM. Besides that, can't I just compile the c-File https: I identified the source of delays, they were caused by calling functions printk.

The devices are connected to spi0 on CS0 and CS1. Post Your Answer Discard By clicking "Post Your Answer", you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

What should be the name for the following DTB? Sign up using Facebook. Sc16i752 Attachment has been moved to: But after this time, FIFO is overflowed and data lost bytes transmits in 26ms.

It also cleans the flag that generated the interrupt. What is the correct solution in this situation and how sc16si752 reduce 25ms latency in Linux Kernel? There might be a bug with using multiple instances of the driver. Does "dmesg -l err" show anything interesting? But queued work is performed within 25ms after interrupt occurs. I tried to use the utility "nice" for priority management and "chrt" for select scheldule policy.

I will set up a VM with Ubuntu tonight and cross-compile. I have created separate.