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Tue, 4 Mar 2025 19:19:15 -0500 (EST) From: Mathew McBride To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Shawn Guo , Rob Herring , Krzysztof Kozlowski Cc: Mathew McBride Subject: [PATCH v2] arm64: dts: freescale: ten64: add usb hub definition Date: Wed, 5 Mar 2025 11:19:01 +1100 Message-ID: <20250305001901.31594-1-matt@traverse.com.au> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20250129045352.10728-1-matt@traverse.com.au> References: <20250129045352.10728-1-matt@traverse.com.au> 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" A device tree binding for the Microchip USB5744 hub controller was added in commit 02be19e914b8 ("dt-bindings: usb: Add support for Microchip usb5744 hub controller"). U-Boot will consume this binding in order to perform the necessary actions to enable the USB hub ports over I2C. (We previously used our own out-of-tree driver for this task) The Ten64 board does not have any switchable supplies for the voltage rails utilized by the USB5744, so a pair of dummy supplies have been added to facilitate operation with U-Boot's hub driver. Signed-off-by: Mathew McBride --- Changes in v2: - provide unique node names for the two regulators - remove unnecessary newline under &usb1 --- .../boot/dts/freescale/fsl-ls1088a-ten64.dts | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1088a-ten64.dts b/arch/arm= 64/boot/dts/freescale/fsl-ls1088a-ten64.dts index bc0d89427fbe5..3a11068f2212f 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1088a-ten64.dts +++ b/arch/arm64/boot/dts/freescale/fsl-ls1088a-ten64.dts @@ -87,6 +87,22 @@ sfp_xg1: dpmac1-sfp { los-gpios =3D <&sfpgpio 7 GPIO_ACTIVE_HIGH>; maximum-power-milliwatt =3D <2000>; }; + + usb1v2_supply: regulator-usbhub-1v2 { + compatible =3D "regulator-fixed"; + regulator-name =3D "usbhub_1v2"; + regulator-min-microvolt =3D <1200000>; + regulator-max-microvolt =3D <1200000>; + regulator-always-on; + }; + + system3v3_supply: regulator-system-3v3 { + compatible =3D "regulator-fixed"; + regulator-name =3D "system_3v3"; + regulator-min-microvolt =3D <3300000>; + regulator-max-microvolt =3D <3300000>; + regulator-always-on; + }; }; =20 /* XG1 - Upper SFP */ @@ -231,6 +247,12 @@ at97sc: tpm@29 { compatible =3D "atmel,at97sc3204t"; reg =3D <0x29>; }; + + usbhub: usb-hub@2d { + compatible =3D "microchip,usb5744"; + reg =3D <0x2d>; + }; + }; =20 &i2c2 { @@ -378,10 +400,32 @@ partition@9400000 { }; }; =20 +/* LS1088A USB Port 0 - direct to bottom USB-A port */ &usb0 { status =3D "okay"; }; =20 +/* LS1088A USB Port 1 - to Microchip USB5744 USB Hub */ &usb1 { + #address-cells =3D <1>; + #size-cells =3D <0>; status =3D "okay"; + + hub_2_0: hub@1 { + compatible =3D "usb424,2744"; + reg =3D <1>; + peer-hub =3D <&hub_3_0>; + i2c-bus =3D <&usbhub>; + vdd-supply =3D <&system3v3_supply>; + vdd2-supply =3D <&usb1v2_supply>; + }; + + hub_3_0: hub@2 { + compatible =3D "usb424,5744"; + reg =3D <2>; + peer-hub =3D <&hub_2_0>; + i2c-bus =3D <&usbhub>; + vdd-supply =3D <&system3v3_supply>; + vdd2-supply =3D <&usb1v2_supply>; + }; }; --=20 2.45.1