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[151.229.67.101]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-45a16dde163sm297645e9.12.2025.08.12.13.03.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Aug 2025 13:03:54 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Geert Uytterhoeven , Magnus Damm , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Prabhakar Subject: [PATCH 09/13] arm64: dts: renesas: r9a09g087m44-rzt2h-evk: Enable I2C0 and I2C1 support Date: Tue, 12 Aug 2025 21:03:40 +0100 Message-ID: <20250812200344.3253781-10-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250812200344.3253781-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20250812200344.3253781-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Lad Prabhakar Enable I2C0 and I2C1 on the RZ/N2H evaluation board. Signed-off-by: Lad Prabhakar --- .../dts/renesas/r9a09g087m44-rzn2h-evk.dts | 56 +++++++++++++++++++ 1 file changed, 56 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts b/arch/= arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts index f6437e82a7de..e41b687e5497 100644 --- a/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts +++ b/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts @@ -12,6 +12,14 @@ #include "r9a09g087m44.dtsi" #include "rzt2h-n2h-evk-common.dtsi" =20 +/* + * I2C0 and LED8/9 share the same pins use the below + * macro to choose (and set approopriate DIP switches). + */ +#define I2C0 1 +#define LED8 (!I2C0) +#define LED9 (!I2C0) + / { model =3D "Renesas RZ/N2H EVK Board based on r9a09g087m44"; compatible =3D "renesas,rzn2h-evk", "renesas,r9a09g087m44", "renesas,r9a0= 9g087"; @@ -47,15 +55,19 @@ led7 { gpios =3D <&pinctrl RZN2H_GPIO(14, 3) GPIO_ACTIVE_LOW>; }; =20 +#if LED8 led8 { /* DSW15-8: OFF, DSW15-9: OFF, DSW15-10: ON */ gpios =3D <&pinctrl RZN2H_GPIO(14, 6) GPIO_ACTIVE_LOW>; }; +#endif =20 +#if LED9 led9 { /* DSW15-5: OFF, DSW16-6: ON */ gpios =3D <&pinctrl RZN2H_GPIO(14, 7) GPIO_ACTIVE_LOW>; }; +#endif =20 led10 { /* DSW17-3: OFF, DSW17-4: ON */ @@ -68,3 +80,47 @@ led11 { }; }; }; + +#if I2C0 +&i2c0 { + pinctrl-0 =3D <&i2c0_pins>; + pinctrl-names =3D "default"; + clock-frequency =3D <400000>; + status =3D "okay"; +}; +#endif + +&i2c1 { + pinctrl-0 =3D <&i2c1_pins>; + pinctrl-names =3D "default"; + clock-frequency =3D <400000>; + status =3D "okay"; +}; + +&pinctrl { + /* + * I2C0 Pin Configuration: + * ------------------------ + * Signal | Pin | DSW15 + * -------|---------|-------------- + * SCL | P14_6 | 8: OFF, 9: ON, 10: OFF + * SDA | P14_7 | 5: ON, 6: OFF + */ + i2c0_pins: i2c0-pins { + pinmux =3D , + ; + }; + + /* + * I2C1 Pin Configuration: + * ------------------------ + * Signal | Pin | DSW7 + * -------|---------|-------------- + * SCL | P03_3 | 3: ON, 4: OFF + * SDA | P03_4 | 1: ON, 2: OFF + */ + i2c1_pins: i2c1-pins { + pinmux =3D , + ; + }; +}; --=20 2.50.1