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drivers: i2c: rts5912 i2c dirver

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base on DesignWare I2C driver to implement RTS5912 I2C driver.

1. support customize bus recovery function.
2. fix isr timing issue by enable tx empty control.
3. support stuck at low handle by enable bus clear feature.
4. support custom stuck at low timeout set from dts
5. disable block mode in rts5912 i2c.
6. support I2C_ALLOW_NO_STOP_TRANSACTIONS

Signed-off-by: Titan Chen <titan.chen@realtek.com>
This commit is contained in:
Titan Chen 2025-04-24 11:58:21 +08:00 • committed by Benjamin Cabé
commit 748789eadf
12 changed files with 755 additions and 38 deletions
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153
dts/arm/realtek/ec/rts5912.dtsi
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@ -11,6 +11,7 @@
#include <zephyr/dt-bindings/gpio/realtek-gpio.h>
#include <zephyr/dt-bindings/pwm/pwm.h>
#include <mem.h>
#include <zephyr/dt-bindings/i2c/i2c.h>
/ {
cpus {
@ -444,6 +445,158 @@
write-block-size = <4>;
};
};
i2c_0: i2c@4000d000 {
compatible = "snps,designware-i2c";
reg = <0x4000d000 0x154>;
clock-frequency = <I2C_BITRATE_STANDARD>;
interrupt-parent = <&nvic>;
interrupts = <182 1>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
i2c_1: i2c@4000d200 {
compatible = "snps,designware-i2c";
reg = <0x4000d200 0x154>;
clock-frequency = <I2C_BITRATE_STANDARD>;
interrupt-parent = <&nvic>;
interrupts = <183 1>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
i2c_2: i2c@4000d400 {
compatible = "snps,designware-i2c";
reg = <0x4000d400 0x154>;
clock-frequency = <I2C_BITRATE_STANDARD>;
interrupt-parent = <&nvic>;
interrupts = <184 1>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
i2c_3: i2c@4000d600 {
compatible = "snps,designware-i2c";
reg = <0x4000d600 0x154>;
clock-frequency = <I2C_BITRATE_STANDARD>;
interrupt-parent = <&nvic>;
interrupts = <185 1>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
i2c_4: i2c@4000d800 {
compatible = "snps,designware-i2c";
reg = <0x4000d800 0x154>;
clock-frequency = <I2C_BITRATE_STANDARD>;
interrupt-parent = <&nvic>;
interrupts = <186 1>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
i2c_5: i2c@4000da00 {
compatible = "snps,designware-i2c";
reg = <0x4000da00 0x154>;
clock-frequency = <I2C_BITRATE_STANDARD>;
interrupt-parent = <&nvic>;
interrupts = <187 1>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
i2c_6: i2c@4000dc00 {
compatible = "snps,designware-i2c";
reg = <0x4000dc00 0x154>;
clock-frequency = <I2C_BITRATE_STANDARD>;
interrupt-parent = <&nvic>;
interrupts = <188 1>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
i2c_7: i2c@4000de00 {
compatible = "snps,designware-i2c";
reg = <0x4000de00 0x154>;
clock-frequency = <I2C_BITRATE_STANDARD>;
interrupt-parent = <&nvic>;
interrupts = <189 1>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
};
i2c_0_wrapper: i2c_0_wrapper {
compatible = "realtek,rts5912-i2c";
dw-i2c-dev = <&i2c_0>;
clocks = <&sccon RTS5912_SCCON_I2C I2C0_CLKPWR>;
clock-names = "i2c";
status = "disabled";
};
i2c_1_wrapper: i2c_1_wrapper {
compatible = "realtek,rts5912-i2c";
dw-i2c-dev = <&i2c_1>;
clocks = <&sccon RTS5912_SCCON_I2C I2C1_CLKPWR>;
clock-names = "i2c";
status = "disabled";
};
i2c_2_wrapper: i2c_2_wrapper {
compatible = "realtek,rts5912-i2c";
dw-i2c-dev = <&i2c_2>;
clocks = <&sccon RTS5912_SCCON_I2C I2C2_CLKPWR>;
clock-names = "i2c";
status = "disabled";
};
i2c_3_wrapper: i2c_3_wrapper {
compatible = "realtek,rts5912-i2c";
dw-i2c-dev = <&i2c_3>;
clocks = <&sccon RTS5912_SCCON_I2C I2C3_CLKPWR>;
clock-names = "i2c";
status = "disabled";
};
i2c_4_wrapper: i2c_4_wrapper {
compatible = "realtek,rts5912-i2c";
dw-i2c-dev = <&i2c_4>;
clocks = <&sccon RTS5912_SCCON_I2C I2C4_CLKPWR>;
clock-names = "i2c";
status = "disabled";
};
i2c_5_wrapper: i2c_5_wrapper {
compatible = "realtek,rts5912-i2c";
dw-i2c-dev = <&i2c_5>;
clocks = <&sccon RTS5912_SCCON_I2C I2C5_CLKPWR>;
clock-names = "i2c";
status = "disabled";
};
i2c_6_wrapper: i2c_6_wrapper {
compatible = "realtek,rts5912-i2c";
dw-i2c-dev = <&i2c_6>;
clocks = <&sccon RTS5912_SCCON_I2C I2C6_CLKPWR>;
clock-names = "i2c";
status = "disabled";
};
i2c_7_wrapper: i2c_7_wrapper {
compatible = "realtek,rts5912-i2c";
dw-i2c-dev = <&i2c_7>;
clocks = <&sccon RTS5912_SCCON_I2C I2C7_CLKPWR>;
clock-names = "i2c";
status = "disabled";
};
swj_port: swj-port {