Part Number: AM3354
Hi,
SDK ：ti-processor-sdk-linux-rt-am335x-evm-03.03.00.04-Linux-x86-Install.bin
Main chip: AM3354
SPI device node: /dev/spidev1.0
Device tree : am335x-boneblack.dtb
&spi1 {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
pinctrl-names = "default";
channel@0 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "spidev";
reg = <0>;
spi-max-frequency = <48000000>;
};
};
SPI application layer program, reference Documentation/spi/spidev_test.c
SPI mode : SPI_MODE_0；
SPI bit : 8 ；
SPI speed : 48000000HZ
Use the application layer program to operate /dev/spidev1.0, to light the ssd1106 OLED screen.
During the OLED process, it was found that the write operation of SPI was very slow.
Setting SPI's speed is 1GHZ, and the speed of writing is not improved.
How to improve the speed of the SPI write operation ??
BR
