From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Picard Date: Thu, 17 Mar 2016 16:57:59 +0100 Subject: [Buildroot] issue with I2C driver : ft6x06 Message-ID: <56EAD407.1010905@yahoo.fr> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Hi, I got the following configuration working : - Raspberry Pi B+ - PiTFT 2.8" capacitive touchscreen (FT6x06 I2C chip for touchscreen) - Kernel 4.1.5 + ft6x06 patch (ft6x06 introduced in v4.4) - NFS rootfs For some reason, I decided to switch to Raspberry Pi 2. Everything works, but the touchscreen : no entry is created in /dev/input and no output in dmesg. I tried to replace i2c_bcm2708 by i2c_bcm2835, but no luck. I must be missing something... David. ------------- /etc/modules ------------- # PiTFT display : spi_bcm2835 fb_ili9341 fbtft_device name=adafruit28 rotate=90 gpios=dc:25 # PiTFT touch panel : evdev i2c_bcm2708 ft6x06_ts # RTCC : i2c-dev rtc-ds1307 ---------- config.txt ---------- kernel=zImage disable_overscan=1 gpu_mem_256=100 gpu_mem_512=100 gpu_mem_1024=100 dtparam=spi=on dtparam=i2c_arm=on ----------- cmdline.txt ----------- dwc_otg.lpm_enable=0 rootwait root=/dev/nfs rootfstype=nfs \ nfsroot=172.16.4.33:/var/local/rootfs_rpi_br console=ttyAMA0,115200 \ fbcon=map:10 fbcon=font:VGA8x8 ip=172.16.4.100