I2C

[parthitce]

• Controller and Target support testing
• Suspend, resume with handling for pinmux states changes, clock disablement or switch low power clock handling

Initial work here: msp-ti@ea9eaee

[parthitce]

Pulled in the changes from msp-ti@ea9eaee (branch: https://github.com/msp-ti/zephyr/commits/mspm0_dev_stable/)
But I2C scan fails to show the devices, debugging further: https://github.com/linumiz/zephyr/tree/dev/ti/mspm0-i2c

[parthitce]

I2C Controller mode works fine. Target mode is still work in progress and checking with Jackson for possible fix.

[parthitce]

git diff boards/ti/lp_mspm0g3507/lp_mspm0g3507_mspm0g3507.dts
diff --git a/boards/ti/lp_mspm0g3507/lp_mspm0g3507_mspm0g3507.dts b/boards/ti/lp_mspm0g3507/lp_mspm0g3507_mspm0g3507.dts
index c9305262a19..dffa84e90a6 100644
--- a/boards/ti/lp_mspm0g3507/lp_mspm0g3507_mspm0g3507.dts
+++ b/boards/ti/lp_mspm0g3507/lp_mspm0g3507_mspm0g3507.dts
@@ -101,7 +101,7 @@
 };
 
 &i2c0 {
-       status = "okay";
+       status = "disabled";
        pinctrl-0 = <&i2c0_scl_pa31 &i2c0_sda_pa28>;
        pinctrl-names = "default";
 };
@@ -110,8 +110,17 @@
        status = "okay";
        pinctrl-0 = <&i2c1_scl_pb2 &i2c1_sda_pb3>;
        pinctrl-names = "default";
+
+       eeprom0: eeprom@54 {
+               reg = <0x54>;
+               size = <256>;
+               compatible = "zephyr,i2c-target-eeprom";
+               status = "okay";
+       };
 };
 
+target_eeprom: &eeprom0{};
+
 &rtc0 {
        status = "okay";
 };

and with

git diff samples/
diff --git a/samples/drivers/i2c/target_eeprom/prj.conf b/samples/drivers/i2c/target_eeprom/prj.conf
index 03350edd923..7c1f280a13c 100644
--- a/samples/drivers/i2c/target_eeprom/prj.conf
+++ b/samples/drivers/i2c/target_eeprom/prj.conf
@@ -1,3 +1,6 @@
 CONFIG_I2C=y
 CONFIG_I2C_TARGET=y
 CONFIG_I2C_EEPROM_TARGET=y
+
+CONFIG_SHELL=y
+CONFIG_I2C_SHELL=y
diff --git a/samples/drivers/i2c/target_eeprom/src/main.c b/samples/drivers/i2c/target_eeprom/src/main.c
index d1c42f9a401..5a02eb082c0 100644
--- a/samples/drivers/i2c/target_eeprom/src/main.c
+++ b/samples/drivers/i2c/target_eeprom/src/main.c
@@ -27,7 +27,8 @@ int main(void)
 
        printk("i2c target driver registered\n");
 
-       k_msleep(1000);
+       while (1)
+               k_msleep(1000);
 
        if (i2c_target_driver_unregister(eeprom) < 0) {
                printk("Failed to unregister i2c target driver\n");

target mode works fine.