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[2a01:cb00:8bd:2700:a086:f61f:d085:ac55]) by smtp.gmail.com with ESMTPSA id g9sm32830263wrp.14.2021.03.30.01.35.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Mar 2021 01:35:21 -0700 (PDT) From: Adrien Grassein Cc: robh+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, catalin.marinas@arm.com, will@kernel.org, bjorn.andersson@linaro.org, krzk@kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Adrien Grassein Subject: [PATCH v1 2/4] arm64: dts: imx8mq-nitrogen: add USB HOST support Date: Tue, 30 Mar 2021 10:35:12 +0200 Message-Id: <20210330083514.5874-3-adrien.grassein@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210330083514.5874-1-adrien.grassein@gmail.com> References: <20210330083514.5874-1-adrien.grassein@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add the description for the USB host port. At this time, the port will not work directly from the kernel because it's connected through a resettable hub that is not handle in the kernel. It should be controlled in the bootloader or in the userspace. In the case of the Boundary's u-boot, this is done on the boot script: " starting USB... Bus usb@38100000: Register 2000140 NbrPorts 2 Starting the controller USB XHCI 1.10 Bus usb@38200000: Register 2000140 NbrPorts 2 Starting the controller USB XHCI 1.10 scanning bus usb@38100000 for devices... 1 USB Device(s) found scanning bus usb@38200000 for devices... 3 USB Device(s) found " Signed-off-by: Adrien Grassein --- .../boot/dts/freescale/imx8mq-nitrogen.dts | 22 +++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts index b46f45a82be1..7a52e247c527 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts @@ -213,6 +213,22 @@ &usb3_phy0 { status = "okay"; }; +&usb_dwc3_1 { + dr_mode = "host"; + status = "okay"; +}; + +/* + * On this board, USB host is connected to a resettable hub. + * The reset signal is connected to the GPIO <&gpio1 14 GPIO_ACTIVE_LOW>. + * You need to activate it in the bootloader or in the userspace. + */ +&usb3_phy1 { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_usb3_1>; +}; + &usdhc1 { assigned-clocks = <&clk IMX8MQ_CLK_USDHC1>; assigned-clock-rates = <400000000>; @@ -388,6 +404,12 @@ MX8MQ_IOMUXC_GPIO1_IO13_USB1_OTG_OC 0x16 >; }; + pinctrl_usb3_1: usb3-1grp { + fsl,pins = < + MX8MQ_IOMUXC_GPIO1_IO14_GPIO1_IO14 0x16 + >; + }; + pinctrl_usdhc1: usdhc1grp { fsl,pins = < MX8MQ_IOMUXC_SD1_CLK_USDHC1_CLK 0x83 -- 2.25.1