I’ve been tryng to change SPI clock on my Colibri board changing the device tree file (.dts) whitout sucess, that’s the correct way to do that, or exist other?
I have this device tree (.dts) file:
// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
/*
* Copyright 2020-2021 Toradex
*/
// LT161010 display (7inch) with a resolution of 800x480 pixel and capacitive touch This display can be ordered at Toradex.
/dts-v1/;
/plugin/;
/ {
compatible = "toradex,apalis_imx6q",
"toradex,apalis-imx8x",
"toradex,colibri_imx6dl",
"toradex,colibri-imx6ull-emmc",
"toradex,colibri-imx7d",
"toradex,colibri-imx7s",
"toradex,colibri-imx7d-emmc",
"toradex,colibri-imx8x";
};
&{/panel-dpi} {
status = "okay";
width-mm = <154>;
height-mm = <86>;
panel-timing {
clock-frequency = <33230769>;
hactive = <800>;
vactive = <480>;
hsync-len = <128>;
hfront-porch = <40>;
hback-porch = <88>;
vsync-len = <1>;
vfront-porch = <10>;
vback-porch = <33>;
pixelclk-active = <1>;
};
};
&atmel_mxt_ts {
status = "okay";
};
&i2c3 {
status = "okay";
};
&weim {
status = "disabled";
};
/* Colibri SSP */
&ecspi4 {
status = "okay";
mcp251x0: mcp251x@0 {
compatible = "microchip,mcp2515";
reg = <0>;
clocks = <&clk16m>;
interrupt-parent = <&gpio3>;
interrupts = <27 0x2>;
spi-max-frequency = <10000000>;
status = "disabled";
};
spidev0: spidev@1 {
compatible = "toradex,evalspi";
reg = <1>;
spi-max-frequency = <1000000>;
status = "okay";
};
};
( PS: the firsts part of .dts file are for the Capacitive Touch Display 7" Parallel and it’s working fine)
After change that, I use the command:
$ torizoncore-builder dto deploy --remote-host 192.168.1.148 --remote-password torizon --force --reboot device-trees/overlays/colibri-imx6dl-custom.dts
And the board reboots with the new device tree, is that procediment correct?
I know that the clock frequency doesn’t change because i’ve already mensure it on oscilloscope.
PS: There is two clocks because i’ve monitoring the SPI clock on arduino header and raspberry header too.