michaelh/zephyr
1
0
Fork 0
Code Releases Activity

boards: arm: apollo4p_blue_kxr_evb: Enable I2C.

Browse source 
This commit enables I2C instance for apollo4p_blue_kxr_evb board.
Also adds pin configuration for each instance.
IOM4 is used for Bluetooth HCI-SPI inside of chip.
So no i2c4_default is defined.

Signed-off-by: Aaron Ye <aye@ambiq.com>
This commit is contained in:
Aaron Ye 2023-09-25 12:11:34 +08:00 • committed by Maureen Helm
commit c2a5f03138
2 changed files with 64 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

56
boards/arm/apollo4p_blue_kxr_evb/apollo4p_blue_kxr_evb-pinctrl.dtsi
View file

@ -16,4 +16,60 @@
input-enable;
};
};
i2c0_default: i2c0_default {
group1 {
pinmux = <M0SCL_P5>, <M0SDAWIR3_P6>;
drive-open-drain;
drive-strength = "0.5";
bias-pull-up;
};
};
i2c1_default: i2c1_default {
group1 {
pinmux = <M1SCL_P8>, <M1SDAWIR3_P9>;
drive-open-drain;
drive-strength = "0.5";
bias-pull-up;
};
};
i2c2_default: i2c2_default {
group1 {
pinmux = <M2SCL_P25>, <M2SDAWIR3_P26>;
drive-open-drain;
drive-strength = "0.5";
bias-pull-up;
};
};
i2c3_default: i2c3_default {
group1 {
pinmux = <M3SCL_P31>, <M3SDAWIR3_P32>;
drive-open-drain;
drive-strength = "0.5";
bias-pull-up;
};
};
i2c5_default: i2c5_default {
group1 {
pinmux = <M5SCL_P47>, <M5SDAWIR3_P48>;
drive-open-drain;
drive-strength = "0.5";
bias-pull-up;
};
};
i2c6_default: i2c6_default {
group1 {
pinmux = <M6SCL_P61>, <M6SDAWIR3_P62>;
drive-open-drain;
drive-strength = "0.5";
bias-pull-up;
};
};
i2c7_default: i2c7_default {
group1 {
pinmux = <M7SCL_P22>, <M7SDAWIR3_P23>;
drive-open-drain;
drive-strength = "0.5";
bias-pull-up;
};
};
};

8
boards/arm/apollo4p_blue_kxr_evb/apollo4p_blue_kxr_evb.dts
View file

@ -34,3 +34,11 @@
&wdt0 {
status = "okay";
};
&iom0 {
compatible = "ambiq,i2c";
pinctrl-0 = <&i2c0_default>;
pinctrl-names = "default";
clock-frequency = <I2C_BITRATE_STANDARD>;
status = "okay";
};