Leadinggol

Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. I've moved the clk14m stanza inside the sc16is752 stanza and it compiles! It compiles but a call to devm_clk_get fails and the driver goes into a probe deferral. So it's a mess. – carveone Jun 14 '15 at 15:40. In my system I'm using I2C to 2xUART converter SC16IS752. Linux Kernel sources already has driver for this chip, but only in SPI mode. Now I trying to modify this driver for I2C work.

In my system I'm using I2C to 2xUART converter SC16IS752. Linux Kernel sources already has driver for this chip, but only in SPI mode. Now I trying to modify this driver for I2C work. I2C has speed 400 kHz. To this converter's UART connected device on baud 38400. This device every 1s sends packets containing about 100 bytes data. SC16IS752 has 64 bytes RX FIFO, so it must be handled two times per one packet.

And I faced the problem of long latencies. When FIFO reaches threshold value, hardware interrupt occurs and now executes IRQ handler:

So, as you can see, interrupt handler puts work for handle data from SC16IS752 FIFO in the queue.

Don’t waste your energy trying to change opinions In this broadcom bcm94318mpg linux, the revision version is rev 03 as shown inside the Parentheses Answer below is updated every time new information is added broadcom bcm94318mpg linux confirmed working.

And here i faced with problem. sc16is7x2_irq function executes immediately after interrupt occurs. But queued work is performed within 25ms after interrupt occurs. But after this time, FIFO is overflowed and data lost (100 bytes transmits in 26ms).

What is the correct solution in this situation and how to reduce 25ms latency in Linux Kernel?

1 Answer

I identified the source of delays, they were caused by calling functions printk. One function is performed about 2-3 ms.

Not the answer you're looking for? Browse other questions tagged linux or ask your own question.

HP OfficeJet 5252 All-in-One Printer series Full Feature Software, Drivers, firmware download, install and fix printer driver problems for Microsoft Windows 10/8/8.1/7/XP/Vista 32-bit – 64-bit and Macintosh Operating System.

“Hpdriver.co” ~ The full solution software includes everything you need to install and use your HP printer. This collection of software includes the complete set of drivers, installer and optional software. Provides download link for HP OfficeJet 5252 printer with “Windows, Mac and Linux” Operating System select compatible computer driver System you use, you can download the driver here easily and for free.

Download HP OfficeJet 5252 Driver for Windows, Mac OS X and Linux

HP OfficeJet 5252 All-in-One Printer series Full Feature Software and Driver

Driver and Software Details

Type: Driver
Version: 44.3.2218
Release date: Apr 27, 2018
File name: OJ5200_Full_WebPack_44.3.2218.exe
File Size: 148.2 MB
Download ↔ Operating Systems: Windows 10 (32-bit/64-bit), Windows 8.1 (32-bit/64-bit), Windows 8 (32-bit/64-bit), Windows 7 (32-bit/64-bit), Windows Vista (32-bit/64-bit), Windows XP (32-bit/64-bit).

HP OfficeJet 5252 All-in-One Printer series Basic Driver for Windows 32 bit

Linux Driver For Samsung 960 Evo Ssd

Driver and Software Details

Type: Basic Drivers
Version: 44.3.2218
Release date: Apr 27, 2018
File name: OJ5200_Basicx86_44.3.2218.exe
File Size: 68.5 MB
Download ↔ Operating Systems: Windows 10 (32-bit), Windows 8.1 (32-bit), Windows 8 (32-bit), Windows 7 (32-bit), Windows Vista (32-bit), Windows XP (32-bit).

HP OfficeJet 5252 All-in-One Printer series Basic Driver for Windows 64 bit

Linux

Driver and Software Details

Type: Basic Drivers
Version: 44.3.2218
Release date: Apr 27, 2018
File name: OJ5200_Basicx64_44.3.2218.exe
File Size: 75.3 MB
Download ↔ Operating Systems: Windows 10 (64-bit), Windows 8.1 (64-bit), Windows 8 (64-bit), Windows 7 (64-bit), Windows Vista (64-bit), Windows XP (64-bit).

HP OfficeJet 5252 All-in-One Printer series Firmware Update

Driver and Software Details

Type: Firmware
Version: 1828A
Release date: Jul 31, 2018
File name: OJ5200_R1828A.exe
File Size: 45.3 MB
Download ↔ Operating Systems: Windows 10 (32-bit/64-bit), Windows 8.1 (32-bit/64-bit), Windows 8 (32-bit/64-bit), Windows 7 (32-bit/64-bit), Windows Vista (32-bit/64-bit), Windows XP (32-bit/64-bit).

HP OfficeJet 5252 Printer Driver Download for Macintosh

HP Easy Start

Linux Driver For Epson Printer

Driver and Software Details

Type: Driver
Version: 2.8.0.177
Release date: Mar 29, 2018
File name: HP_Easy_Start.app.zip
File Size: 8.3 MB
Download ↔ Operating Systems: Mac OS 10.13, Mac OS 10.12, Mac OS 10.11, Mac OS 10.10, Mac OS 10.9, Mac OS 10.8.

Sc16is752 Linux Driver For Mac

The guidelines to install from HP OfficeJet 5252 Driver are as follows:

Linux Driver For Netgear Wna3100

1. Check whether you have switched on the printer and make sure that the USB cable is connected.
2. Install the HP OfficeJet 5252 driver by selecting the storage location of the software or driver.
3. Double-click on the software or driver that was downloaded and follow the instructions that appear on the screen.
4. Next
5. Next
6. Restarting the computer may be required for completing the installation.