diff --git a/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
index fd4705c451e2..426e4bcf6803 100644
--- a/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
+++ b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
@@ -196,6 +196,325 @@
 	};
 };
 
+/*
+ * Legend: proper name = the GPIO line is used as GPIO
+ *         NC = not connected (pin out but not routed from the chip to
+ *              anything the board)
+ *         "[PER]" = pin is muxed for [peripheral] (not GPIO)
+ *         "" = no idea, schematic doesn't say, could be
+ *              unrouted (not connected to any external pin)
+ *         LSEC = Low Speed External Connector
+ *         HSEC = High Speed External Connector
+ *
+ * Line names are taken from "HiKey 960 Board ver A" schematics
+ * from Huawei. The 40 pin low speed expansion connector is named
+ * J2002 63453-140LF.
+ *
+ * For the lines routed to the external connectors the
+ * lines are named after the 96Boards CE Specification 1.0,
+ * Appendix "Expansion Connector Signal Description".
+ *
+ * When the 96Board naming of a line and the schematic name of
+ * the same line are in conflict, the 96Board specification
+ * takes precedence, which means that the external UART on the
+ * LSEC is named UART0 while the schematic and SoC names this
+ * UART3. This is only for the informational lines i.e. "[FOO]",
+ * the GPIO named lines "GPIO-A" thru "GPIO-L" are the only
+ * ones actually used for GPIO.
+ */
+&gpio0 {
+	/* GPIO_000-GPIO_007 */
+	gpio-line-names =
+		"",
+		"TP901", /* TEST_MODE connected to TP901 */
+		"[PMU0_SSI]",
+		"[PMU1_SSI]",
+		"[PMU2_SSI]",
+		"[PMU0_CLKOUT]",
+		"[JTAG_TCK]",
+		"[JTAG_TMS]";
+};
+
+&gpio1 {
+	/* GPIO_008-GPIO_015 */
+	gpio-line-names =
+		"[JTAG_TRST_N]",
+		"[JTAG_TDI]",
+		"[JTAG_TDO]",
+		"NC", "NC",
+		"[I2C3_SCL]",
+		"[I2C3_SDA]",
+		"NC";
+};
+
+&gpio2 {
+	/* GPIO_016-GPIO_023 */
+	gpio-line-names =
+		"NC", "NC", "NC",
+		"GPIO-J", /* LSEC pin 32: GPIO_019 */
+		"GPIO_020_HDMI_SEL",
+		"GPIO-L", /* LSEC pin 34: GPIO_021 */
+		"GPIO_022_UFSBUCK_INT_N",
+		"GPIO-G"; /* LSEC pin 29: LCD_TE0 */
+};
+
+&gpio3 {
+	/* GPIO_024-GPIO_031 */
+	/* The rail from pin BK36 is named LCD_TE0, we assume to be muxed as GPIO for GPIO-G */
+	gpio-line-names =
+		"[CSI0_MCLK]", /* HSEC pin 15: ISP_CCLK0_MCAM */
+		"[CSI1_MCLK]", /* HSEC pin 17: ISP_CCLK1_SCAM */
+		"NC",
+		"[I2C2_SCL]", /* HSEC pin 32: ISP_SCL0 */
+		"[I2C2_SDA]", /* HSEC pin 34: ISP_SDA0 */
+		"[I2C3_SCL]", /* HSEC pin 36: ISP_SCL1 */
+		"[I2C3_SDA]", /* HSEC pin 38: ISP_SDA1 */
+		"NC";
+};
+
+&gpio4 {
+	/* GPIO_032-GPIO_039 */
+	gpio-line-names =
+		"NC", "NC",
+		"PWR_BTN_N", /* LSEC pin 4: GPIO_034_PWRON_DET */
+		"GPIO_035_PMU2_EN",
+		"GPIO_036_USB_HUB_RESET",
+		"NC", "NC", "NC";
+};
+
+&gpio5 {
+	/* GPIO_040-GPIO_047 */
+	gpio-line-names =
+		"GPIO-H", /* LSEC pin 30: GPIO_040_LCD_RST_N */
+		"GPIO_041_HDMI_PD",
+		"TP904", /* Test point */
+		"TP905", /* Test point */
+		"NC", "NC",
+		"GPIO_046_HUB_VDD33_EN",
+		"GPIO_047_PMU1_EN";
+};
+
+&gpio6 {
+	/* GPIO_048-GPIO_055 */
+	gpio-line-names =
+		"NC", "NC", "NC",
+		"GPIO_051_WIFI_EN",
+		"GPIO-I", /* LSEC pin 31: GPIO_052_CAM0_RST_N */
+		/*
+		 * These two pins should be used for SD(IO) data according to the
+		 * 96boards specification but seems to be repurposed for a IRDA UART.
+		 * They are however named according to the spec.
+		 */
+		"[SD_DAT1]", /* HSEC pin 3: UART0_IRDA_RXD */
+		"[SD_DAT2]", /* HSEC pin 5: UART0_IRDA_TXD */
+		"[UART1_RXD]"; /* LSEC pin 13: DEBUG_UART6_RXD */
+};
+
+&gpio7 {
+	/* GPIO_056-GPIO_063 */
+	gpio-line-names =
+		"[UART1_TXD]", /* LSEC pin 11: DEBUG_UART6_TXD */
+		"[UART0_CTS]", /* LSEC pin 3: UART3_CTS_N */
+		"[UART0_RTS]", /* LSEC pin 9: UART3_RTS_N */
+		"[UART0_RXD]", /* LSEC pin 7: UART3_RXD */
+		"[UART0_TXD]", /* LSEC pin 5: UART3_TXD */
+		"[SOC_BT_UART4_CTS_N]",
+		"[SOC_BT_UART4_RTS_N]",
+		"[SOC_BT_UART4_RXD]";
+};
+
+&gpio8 {
+	/* GPIO_064-GPIO_071 */
+	gpio-line-names =
+		"[SOC_BT_UART4_TXD]",
+		"NC",
+		"[PMU_HKADC_SSI]",
+		"NC",
+		"GPIO_068_SEL",
+		"NC", "NC", "NC";
+
+};
+
+&gpio9 {
+	/* GPIO_072-GPIO_079 */
+	gpio-line-names =
+		"NC", "NC", "NC",
+		"GPIO-K", /* LSEC pin 33: GPIO_075_CAM1_RST_N */
+		"NC", "NC", "NC", "NC";
+};
+
+&gpio10 {
+	/* GPIO_080-GPIO_087 */
+	gpio-line-names = "NC", "NC", "NC", "NC", "NC", "NC", "NC", "NC";
+};
+
+&gpio11 {
+	/* GPIO_088-GPIO_095 */
+	gpio-line-names =
+		"NC",
+		"[PCIE_PERST_N]",
+		"NC", "NC", "NC", "NC", "NC", "NC";
+};
+
+&gpio12 {
+	/* GPIO_096-GPIO_103 */
+	gpio-line-names = "NC", "NC", "NC", "", "", "", "", "NC";
+};
+
+&gpio13 {
+	/* GPIO_104-GPIO_111 */
+	gpio-line-names = "NC", "NC", "NC", "NC", "NC", "NC", "NC", "NC";
+};
+
+&gpio14 {
+	/* GPIO_112-GPIO_119 */
+	gpio-line-names = "NC", "NC", "NC", "NC", "NC", "NC", "NC", "NC";
+};
+
+&gpio15 {
+	/* GPIO_120-GPIO_127 */
+	gpio-line-names =
+		"NC", "NC", "NC", "NC", "NC", "NC",
+		"GPIO_126_BT_EN",
+		"TP902"; /* GPIO_127_JTAG_SEL0 */
+};
+
+&gpio16 {
+	/* GPIO_128-GPIO_135 */
+	gpio-line-names = "", "", "", "", "", "", "", "";
+};
+
+&gpio17 {
+	/* GPIO_136-GPIO_143 */
+	gpio-line-names = "", "", "", "", "", "", "", "";
+};
+
+&gpio18 {
+	/* GPIO_144-GPIO_151 */
+	gpio-line-names =
+		"[UFS_REF_CLK]",
+		"[UFS_RST_N]",
+		"[SPI1_SCLK]", /* HSEC pin 9: GPIO_146_SPI3_CLK */
+		"[SPI1_DIN]", /* HSEC pin 11: GPIO_147_SPI3_DI */
+		"[SPI1_DOUT]", /* HSEC pin 1: GPIO_148_SPI3_DO */
+		"[SPI1_CS]", /* HSEC pin 7: GPIO_149_SPI3_CS0_N */
+		"GPIO_150_USER_LED1",
+		"GPIO_151_USER_LED2";
+};
+
+&gpio19 {
+	/* GPIO_152-GPIO_159 */
+	gpio-line-names = "NC", "NC", "NC", "NC", "", "", "", "";
+};
+
+&gpio20 {
+	/* GPIO_160-GPIO_167 */
+	gpio-line-names =
+		"[SD_CLK]",
+		"[SD_CMD]",
+		"[SD_DATA0]",
+		"[SD_DATA1]",
+		"[SD_DATA2]",
+		"[SD_DATA3]",
+		"", "";
+};
+
+&gpio21 {
+	/* GPIO_168-GPIO_175 */
+	gpio-line-names =
+		"[WL_SDIO_CLK]",
+		"[WL_SDIO_CMD]",
+		"[WL_SDIO_DATA0]",
+		"[WL_SDIO_DATA1]",
+		"[WL_SDIO_DATA2]",
+		"[WL_SDIO_DATA3]",
+		"", "";
+};
+
+&gpio22 {
+	/* GPIO_176-GPIO_183 */
+	gpio-line-names =
+		"[GPIO_176_PMU_PWR_HOLD]",
+		"NA",
+		"[SYSCLK_EN]",
+		"GPIO_179_WL_WAKEUP_AP",
+		"GPIO_180_HDMI_INT",
+		"NA",
+		"GPIO-F", /* LSEC pin 28: LCD_BL_PWM */
+		"[I2C0_SCL]"; /* LSEC pin 15 */
+};
+
+&gpio23 {
+	/* GPIO_184-GPIO_191 */
+	gpio-line-names =
+		"[I2C0_SDA]", /* LSEC pin 17 */
+		"[I2C1_SCL]", /* Actual SoC I2C1 */
+		"[I2C1_SDA]", /* Actual SoC I2C1 */
+		"[I2C1_SCL]", /* LSEC pin 19: I2C7_SCL */
+		"[I2C1_SDA]", /* LSEC pin 21: I2C7_SDA */
+		"GPIO_189_USER_LED3",
+		"GPIO_190_USER_LED4",
+		"",
+};
+
+&gpio24 {
+	/* GPIO_192-GPIO_199 */
+	gpio-line-names =
+		"[PCM_DI]", /* LSEC pin 22: GPIO_192_I2S0_DI */
+		"[PCM_DO]", /* LSEC pin 20: GPIO_193_I2S0_DO */
+		"[PCM_CLK]", /* LSEC pin 18: GPIO_194_I2S0_XCLK */
+		"[PCM_FS]", /* LSEC pin 16: GPIO_195_I2S0_XFS */
+		"[GPIO_196_I2S2_DI]",
+		"[GPIO_197_I2S2_DO]",
+		"[GPIO_198_I2S2_XCLK]",
+		"[GPIO_199_I2S2_XFS]";
+};
+
+&gpio25 {
+	/* GPIO_200-GPIO_207 */
+	gpio-line-names =
+		"NC",
+		"NC",
+		"GPIO_202_VBUS_TYPEC",
+		"GPIO_203_SD_DET",
+		"GPIO_204_PMU12_IRQ_N",
+		"GPIO_205_WIFI_ACTIVE",
+		"GPIO_206_USBSW_SEL",
+		"GPIO_207_BT_ACTIVE";
+};
+
+&gpio26 {
+	/* GPIO_208-GPIO_215 */
+	gpio-line-names =
+		"GPIO-A", /* LSEC pin 23: GPIO_208 */
+		"GPIO-B", /* LSEC pin 24: GPIO_209 */
+		"GPIO-C", /* LSEC pin 25: GPIO_210 */
+		"GPIO-D", /* LSEC pin 26: GPIO_211 */
+		"GPIO-E", /* LSEC pin 27: GPIO_212 */
+		"[PCIE_CLKREQ_N]",
+		"[PCIE_WAKE_N]",
+		"[SPI0_CLK]"; /* LSEC pin 8: SPI2_CLK */
+};
+
+&gpio27 {
+	/* GPIO_216-GPIO_223 */
+	gpio-line-names =
+		"[SPI0_DIN]", /* LSEC pin 10: SPI2_DI */
+		"[SPI0_DOUT]", /* LSEC pin 14: SPI2_DO */
+		"[SPI0_CS]", /* LSEC pin 12: SPI2_CS0_N */
+		"GPIO_219_CC_INT",
+		"NC",
+		"NC",
+		"[PMU_INT]",
+		"";
+};
+
+&gpio28 {
+	/* GPIO_224-GPIO_231 */
+	gpio-line-names =
+		"", "", "", "", "", "", "", "";
+};
+
 &i2c0 {
 	/* On Low speed expansion */
 	label = "LS-I2C0";
