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Subject[PATCH v4 03/10] arm64: dts: imx8mm-nitrogen-r2: add USB support
Date
Add description of USB.
usbotg2 seems to not working on all boards (including ones
from variscite).

Signed-off-by: Adrien Grassein <adrien.grassein@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
---
.../boot/dts/freescale/imx8mm-nitrogen-r2.dts | 42 +++++++++++++++++++
1 file changed, 42 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-nitrogen-r2.dts b/arch/arm64/boot/dts/freescale/imx8mm-nitrogen-r2.dts
index 217ac8c53702..4f4cf7df5a5a 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-nitrogen-r2.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-nitrogen-r2.dts
@@ -247,6 +247,34 @@ &usdhc3 {
status = "okay";
};

+/* USB OTG port */
+&usbotg1 {
+ dr_mode = "otg";
+ over-current-active-low;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usbotg1>;
+ power-active-high;
+ status = "okay";
+};
+
+/* USB Host port */
+&usbotg2 {
+ dr_mode = "host";
+ over-current-active-low;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usbotg2>;
+ power-active-high;
+ /*
+ * FIXME: having USB2 enabled hangs the boot just after:
+ *[ 1.655941] ci_hdrc ci_hdrc.1: EHCI Host Controller
+ *[ 1.660880] ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 2
+ *[ 1.681505] ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
+ *[ 1.687730] hub 2-0:1.0: USB hub found
+ *[ 1.691528] hub 2-0:1.0: 1 port detected
+ */
+ status = "disabled";
+};
+
&wdog1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_wdog>;
@@ -318,6 +346,20 @@ MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX 0x140
>;
};

+ pinctrl_usbotg1: usbotg1grp {
+ fsl,pins = <
+ MX8MM_IOMUXC_GPIO1_IO12_USB1_OTG_PWR 0x16
+ MX8MM_IOMUXC_GPIO1_IO13_USB1_OTG_OC 0x156
+ >;
+ };
+
+ pinctrl_usbotg2: usbotg2grp {
+ fsl,pins = <
+ MX8MM_IOMUXC_GPIO1_IO14_USB2_OTG_PWR 0x16
+ MX8MM_IOMUXC_GPIO1_IO15_USB2_OTG_OC 0x15
+ >;
+ };
+
pinctrl_usdhc1: usdhc1grp {
fsl,pins = <
MX8MM_IOMUXC_SD1_CLK_USDHC1_CLK 0x190
--
2.25.1
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