Messages in this thread Patch in this message |  | | From | Biju <> | | Subject | [PATCH 4/4] arm64: dts: renesas: r9a08g046l48-smarc: Enable I2C{2,3} devices | | Date | Tue, 5 May 2026 08:01:57 +0100 |
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From: Biju Das <biju.das.jz@bp.renesas.com>
Enable I2C{2,3} on RZ/G3L SMARC EVK board. The I2C3 is enabled by setting SW SYS.2 to OFF position.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> --- .../boot/dts/renesas/r9a08g046l48-smarc.dts | 29 +++++++++++++++++++ .../boot/dts/renesas/rzg3l-smarc-som.dtsi | 4 +++ 2 files changed, 33 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r9a08g046l48-smarc.dts b/arch/arm64/boot/dts/renesas/r9a08g046l48-smarc.dts index 8384cec7f056..9752d9d6a59c 100644 --- a/arch/arm64/boot/dts/renesas/r9a08g046l48-smarc.dts +++ b/arch/arm64/boot/dts/renesas/r9a08g046l48-smarc.dts @@ -11,6 +11,7 @@ #define RZ_BOOT_MODE3 0 #define SW_DPI_EN 0 #define SW_GPIO4 0 +#define SW_I3C_EN 0 #define PMOD_GPIO4 0 #define PMOD_GPIO6 0 @@ -33,10 +34,28 @@ / { "renesas,r9a08g046l48", "renesas,r9a08g046"; aliases { + i2c2 = &i2c2; + i2c3 = &i2c3; serial3 = &scif0; }; }; +&i2c2 { + pinctrl-0 = <&i2c2_pins>; + pinctrl-names = "default"; + + status = "okay"; +}; + +#if !SW_I3C_EN +&i2c3 { + pinctrl-0 = <&i2c3_pins>; + pinctrl-names = "default"; + + status = "okay"; +}; +#endif + &keys { #if RZ_BOOT_MODE3 || SW_GPIO4 || PMOD_GPIO4 /delete-node/ key-1; @@ -52,6 +71,16 @@ &keys { }; &pinctrl { + i2c2_pins: i2c2 { + pinmux = <RZG3L_PORT_PINMUX(A, 4, 4)>, /* RIIC2_SCL */ + <RZG3L_PORT_PINMUX(A, 5, 4)>; /* RIIC2_SDA */ + }; + + i2c3_pins: i2c3 { + pinmux = <RZG3L_PORT_PINMUX(2, 0, 4)>, /* RIIC3_SCL */ + <RZG3L_PORT_PINMUX(2, 1, 4)>; /* RIIC3_SDA */ + }; + scif0_pins: scif0 { pins = "SCIF0_TXD", "SCIF0_RXD"; power-source = <1800>; diff --git a/arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi index bc1178c7484a..fb868ea99b7f 100644 --- a/arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi +++ b/arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi @@ -9,6 +9,10 @@ * Please set the below switch position on the SoM and the corresponding macro * on the board DTS: * + * Switch position SYS.2, Macro SW_I3C_EN: + * 0 - SMARC_I2C_GP is enabled + * 1 - I3C is enabled + * * Switch position SYS.5, Macro SW_DPI_EN: * 0 - Select multiple SMARC signals active * 1 - Select LCD -- 2.43.0
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