DESK-RZ-L/Peripherals/SPI
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| 2025/12/16 | DESK-RZ-L-1.x.x release | ||
Contents
Peripheral SPI[edit | edit source]
Configuration[edit | edit source]
These peripheral(s) can only be used with the following ConfigID(s) (see the associated BOM):
| ConfigID | Note |
|---|---|
| 2002 | SPI available on mikroBUS connector
|
| 2003 | SPI s not available (the pins are used to drive motors) |
Device tree configuration[edit | edit source]
Below is an example of a device tree configuration used on a standard DAVE kit for the DSAB EVK.
From rzt2h-eb23-cb2002.dts:
...
&spi1 {
pinctrl-0 = <&spi1_pins>;
pinctrl-names = "default";
status = "okay";
spidev@0 {
compatible = "rohm,dh2228fv";
reg = <0>;
spi-max-frequency = <1000000>;
};
};
...
&pinctrl {
...
spi1_pins: spi1 {
pinmux = <RZT2H_PORT_PINMUX(32, 6, 0x1A)>, /* SSL */
<RZT2H_PORT_PINMUX(32, 3, 0x1A)>, /* SCK */
<RZT2H_PORT_PINMUX(32, 4, 0x1A)>, /* MOSI */
<RZT2H_PORT_PINMUX(32, 5, 0x1A)>; /* MISO */
};
};
Accessing the peripheral[edit | edit source]
Linux[edit | edit source]
... [ 61.881578] renesas_spi_t2h 80007400.spi: dma_request_slave_channel_compat failed [ 61.889128] renesas_spi_t2h 80007400.spi: DMA not available, using PIO [ 61.897223] renesas_spi_t2h 80007400.spi: probed ...
root@desk-t2h-usd-devel:~# ls /dev/spidev0.0 /dev/spidev0.0
