PLEASE HELP: Incrase the speed of I2C bus

moverrock · October 17, 2023, 1:51pm

Hello,

@jack s there a simple way to increase the speed of the I2C bus ? I have read the README.rockship-overlays, and it does not show how for I2C, but only for SPI.

It would be great to see if there is a parameters that we can use, so I do not have to recompile the entire kernel again.

Thank you very much.
Best regards,

moverrock · August 25, 2023, 9:19am

@jack there is this parameters: SCLK_I2C0 in this file

github.com

torvalds/linux/blob/master/arch/arm64/boot/dts/rockchip/rk3308.dtsi

// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
 * Copyright (c) 2019 Fuzhou Rockchip Electronics Co., Ltd
 *
 */

#include <dt-bindings/clock/rk3308-cru.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/pinctrl/rockchip.h>
#include <dt-bindings/soc/rockchip,boot-mode.h>
#include <dt-bindings/thermal/thermal.h>

/ {
	compatible = "rockchip,rk3308";

	interrupt-parent = <&gic>;
	#address-cells = <2>;
	#size-cells = <2>;

This file has been truncated. show original

Do you know if this is possible to set it from the /boot directory ?

moverrock · September 6, 2023, 5:34pm

Can I get an answer to this one ?

moverrock · October 17, 2023, 1:51pm

Could someone from the maintainer explain how we can resolve this issue ?