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+---- Thread: SPI enable? (/showthread.php?tid=3145)
SPI enable? - herialtifa - 01-16-2017
Anybody to success enable spi port in GPIO?
what your linux version?
RE: SPI enable? - tllim - 01-20-2017
(01-16-2017, 08:40 PM)herialtifa Wrote: Anybody to success enable spi port in GPIO?
what your linux version?
Sunxi already support SPI NOR Flash on the mainline kernel, this means the SPI already enable.
RE: SPI enable? - herialtifa - 01-20-2017
(01-20-2017, 08:09 PM)tllim Wrote:Sorry, what your mean?(01-16-2017, 08:40 PM)herialtifa Wrote: Anybody to success enable spi port in GPIO?
what your linux version?
Sunxi already support SPI NOR Flash on the mainline kernel, this means the SPI already enable.
Where i get linux for pinr64 with mainline kernel (spi enable)?
Thanks
Sent from my Mi-4c using Tapatalk
RE: SPI enable? - jeroen79 - 02-09-2018
you can get a mainline image at
https://dl.armbian.com/pine64/nightly/ (de debian one)
but spi doesn't seem to work on that at the moment
RE: SPI enable? - xalius - 02-09-2018
There should be a dts-overlay in Armbian to switch UART3/4 to SPI... so you dont even have to change your devicetree manually
RE: SPI enable? - jeroen79 - 02-11-2018
the overlay doesn't seem to work, adding the following to the dtb and compiling it does work:
&spi0 {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
spidev@0 {
reg = <0>; /* Chip Select 0 */
compatible = "spidev";
spi-max-frequency = <1000000>;
status = "okay";
};
spidev@1 {
reg = <1>; /* Chip Select 1 */
compatible = "spidev";
spi-max-frequency = <1000000>;
status = "okay";
};
};
Why isn't this included by default in the dtb?
RE: SPI enable? - xalius - 02-15-2018
The policy for mainline Linux is to not enable anything that is just on headers with no devices connected, and if devices are connected only the things needed, like MTD for the SPI flash.
RE: SPI enable? - jomoengineer - 03-17-2018
i was able to get SPI enabled on my Pine64+ by following the instructions at the following link:
http://synfare.com/599N105E/hwdocs/pine64/spidev.html
This is what it looks like after performing the dtc edits:
Code:
ls /dev/spidev0.0
/dev/spidev0.0
$ dmesg | grep spi
[ 7.359039] sunxi hwspinlock vbase:0xffffff800005c000
[ 8.643747] spi spi0: master is unqueued, this is deprecated
lsmod |grep spi
spidev 13470 0
$ modinfo spidev
filename: /lib/modules/3.10.104/kernel/drivers/spi/spidev.ko
alias: spi:spidev
license: GPL
description: User mode SPI device interface
author: Andrea Paterniani, <a.paterniani@swapp-eng.it>
srcversion: 52DC1464FA6763724AC8CBF
alias: of:N*T*Crohm,dh2228fv*
depends:
intree: Y
vermagic: 3.10.104 SMP preempt mod_unload modversions aarch64
parm: bufsiz:data bytes in biggest supported SPI message (uint)i have not tried this but it looks good thus far.