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[2a01:cb00:8bd:2700:7d57:ea0d:8d9:46c1]) by smtp.gmail.com with ESMTPSA id t14sm6343041wru.64.2021.03.31.16.23.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 Mar 2021 16:23:59 -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 v3 2/4] arm64: dts: imx8mq-nitrogen: add USB HOST support Date: Thu, 1 Apr 2021 01:23:54 +0200 Message-Id: <20210331232356.2204476-3-adrien.grassein@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210331232356.2204476-1-adrien.grassein@gmail.com> References: <20210331232356.2204476-1-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. This port is linked to a resettable USB HUB so handle this reset signal with a GPIO hog. Signed-off-by: Adrien Grassein --- .../boot/dts/freescale/imx8mq-nitrogen.dts | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts index b46f45a82be1..04992cbba56e 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts @@ -102,6 +102,14 @@ ethphy0: ethernet-phy@4 { }; }; +&gpio1 { + usb-host-reset-hog { + gpio-hog; + gpios = <14 GPIO_ACTIVE_HIGH>; + output-high; + }; +}; + &i2c1 { clock-frequency = <400000>; pinctrl-names = "default"; @@ -213,6 +221,22 @@ &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 +412,12 @@ 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