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Initial support I2C driver for Renesas RZ/A2M #100513

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Initial support I2C driver for Renesas RZ/A2M #100513

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4c56634
drivers: i2c: Initial support for RZ/A2M
Dec 3, 2025
d73d460
dts: renesas: Add I2C support for RZ/A2M
Dec 3, 2025
675a604
boards: renesas: rza2m_evk: Add I2C support
Dec 3, 2025
a95d8b5
tests: drivers: i2c: Add support for RZ/A2M-EVK
Dec 3, 2025
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7 changes: 7 additions & 0 deletions boards/renesas/rza2m_evk/rza2m_evk-pinctrl.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -13,4 +13,11 @@
<RZA2M_PINMUX(PORT_09, 1, 4)>; /* RXD */
};
};

/omit-if-no-ref/ i2c3_default: i2c3_default {
i2c3-pinmux {
pinmux = <RZA2M_PINMUX(PORT_D, 6, 1)>, /* RIIC3SCL */
<RZA2M_PINMUX(PORT_D, 7, 1)>; /* RIIC3SDA */
};
};
};
6 changes: 6 additions & 0 deletions boards/renesas/rza2m_evk/rza2m_evk.dts
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Expand Up @@ -88,3 +88,9 @@
current-speed = <115200>;
status = "okay";
};

&i2c3 {
pinctrl-0 = <&i2c3_default>;
pinctrl-names = "default";
status = "okay";
};
1 change: 1 addition & 0 deletions boards/renesas/rza2m_evk/rza2m_evk.yaml
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Expand Up @@ -8,4 +8,5 @@ toolchain:
supported:
- uart
- gpio
- i2c
vendor: renesas
1 change: 1 addition & 0 deletions drivers/i2c/CMakeLists.txt
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Expand Up @@ -69,6 +69,7 @@ zephyr_library_sources_ifdef(CONFIG_I2C_RENESAS_RA_IIC i2c_renesas_ra_iic.c)
zephyr_library_sources_ifdef(CONFIG_I2C_RENESAS_RA_SCI i2c_renesas_ra_sci.c)
zephyr_library_sources_ifdef(CONFIG_I2C_RENESAS_RA_SCI_B i2c_renesas_ra_sci_b.c)
zephyr_library_sources_ifdef(CONFIG_I2C_RENESAS_RX_RIIC i2c_renesas_rx_riic.c)
zephyr_library_sources_ifdef(CONFIG_I2C_RENESAS_RZA2M_RIIC i2c_renesas_rza2m_riic.c)
zephyr_library_sources_ifdef(CONFIG_I2C_RENESAS_RZ_IIC i2c_renesas_rz_riic.c)
zephyr_library_sources_ifdef(CONFIG_I2C_RENESAS_RZ_RIIC i2c_renesas_rz_riic.c)
zephyr_library_sources_ifdef(CONFIG_I2C_RTS5912 i2c_realtek_rts5912.c)
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8 changes: 8 additions & 0 deletions drivers/i2c/Kconfig.renesas_rz
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Expand Up @@ -18,3 +18,11 @@ config I2C_RENESAS_RZ_IIC
select PINCTRL
help
Enable Renesas RZ I2C IIC Driver.

config I2C_RENESAS_RZA2M_RIIC
bool "Renesas I2C Driver for RZ/A2M"
default y
depends on DT_HAS_RENESAS_RZA2M_RIIC_ENABLED
select PINCTRL
help
Enable Renesas I2C Driver (RIIC) for RZ/A2M.
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