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Linux Framebuffer drivers for small TFT LCD display modules. Development has moved to https://git.kernel.org/cgit/linux/kernel/git/gregkh/staging.git/tree/drivers/staging/fbtft?h=staging-testing
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fb_pcd8544 spi0.0: __spi_sync timeout #435

Closed dunglx closed 7 years ago

dunglx commented 7 years ago

Hi,

I have just had a NanoPi 2 Fire board (http://wiki.friendlyarm.com/wiki/index.php/NanoPi_2_Fire). I'm trying to use fbtft driver for the Nokia 3310/5110 display on this board with kernel 3.4. I had enabled fbtft driver with nokia3310 device as the follow command:

#  modprobe fbtft_device name=nokia3310 debug=7 verbose=3 gpios=dc:71,reset:72,led:92

and get the error:

[ 38.148000] fbtft_device: module is from the staging directory, the quality is unknown, you have been warned. [ 38.172000] fbtft_device: SPI devices registered: [ 38.184000] fbtft_device: spidev spi0.0 3125kHz 8 bits mode=0x03 [ 38.200000] fbtft_device: 'fb' Platform devices registered: [ 38.208000] fbtft_device: nxp-fb id=0 pdata? yes [ 38.216000] fbtft_device: Deleting spi0.0 [ 38.224000] SSP Target Frequency is: 400000, Effective Frequency is 396825 [ 39.352000] fb_pcd8544 spi0.0: spi_sync timeout [ 39.356000] ssp-pl022 ssp-pl022.0: do_polling_transfer: timeout! [ 39.368000] fb_pcd8544 spi0.0: fbtft_write_reg8_bus8: write() failed and returned -16 [ 40.376000] fb_pcd8544 spi0.0: spi_sync timeout [ 40.380000] fb_pcd8544 spi0.0: fbtft_write_reg8_bus8: write() failed and returned -16 [ 41.392000] fb_pcd8544 spi0.0: spi_sync timeout [ 41.396000] fb_pcd8544 spi0.0: fbtft_write_reg8_bus8: write() failed and returned -16 [ 42.408000] fb_pcd8544 spi0.0: spi_sync timeout [ 42.412000] fb_pcd8544 spi0.0: fbtft_write_reg8_bus8: write() failed and returned -16 [ 43.424000] fb_pcd8544 spi0.0: __spi_sync timeout [ 43.428000] fb_pcd8544 spi0.0: fbtft_write_reg8_bus8: write() failed and returned -16 [ 44.208000] ssp-pl022 ssp-pl022.0: do_polling_transfer: timeout! ........

May you help me how to resolve this error ?

Thanks,

yuewb commented 7 years ago

Hi,dunglx,I also have this same problem,have U solve this ?Thank u very much!