arm64: dts: blaize-blzp1600: Enable GPIO support

Blaize BLZP1600 uses the custom silicon provided from
VeriSilicon to add GPIO support.
This interface is used to control signals on many other
peripherals, such as Ethernet, USB, SD and eMMC.

Signed-off-by: Nikolaos Pasaloukos <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnd Bergmann <[email protected]>

Author: Nikolaos Pasaloukos

arch/arm64/boot/dts/blaize/blaize-blzp1600-cb2.dts

@@ -81,3 +81,39 @@
 				  "UART1_TO_RSP";	/* GPIO_15 */
 	};
 };
+
+&gpio0 {
+	status = "okay";
+	gpio-line-names = "PERST_N",		/* GPIO_0 */
+			  "LM96063_ALERT_N",	/* GPIO_1 */
+			  "INA3221_PV",		/* GPIO_2 */
+			  "INA3221_CRIT",	/* GPIO_3 */
+			  "INA3221_WARN",	/* GPIO_4 */
+			  "INA3221_TC",		/* GPIO_5 */
+			  "QSPI0_RST_N",	/* GPIO_6 */
+			  "LM96063_TCRIT_N",	/* GPIO_7 */
+			  "DSI_TCH_INT",	/* GPIO_8 */
+			  "DSI_RST",		/* GPIO_9 */
+			  "DSI_BL",		/* GPIO_10 */
+			  "DSI_INT",		/* GPIO_11 */
+			  "ETH_RST",		/* GPIO_12 */
+			  "CSI0_RST",		/* GPIO_13 */
+			  "CSI0_PWDN",		/* GPIO_14 */
+			  "CSI1_RST",		/* GPIO_15 */
+			  "CSI1_PWDN",		/* GPIO_16 */
+			  "CSI2_RST",		/* GPIO_17 */
+			  "CSI2_PWDN",		/* GPIO_18 */
+			  "CSI3_RST",		/* GPIO_19 */
+			  "CSI3_PWDN",		/* GPIO_20 */
+			  "ADAC_RST",		/* GPIO_21 */
+			  "SD_SW_VDD",		/* GPIO_22 */
+			  "SD_PON_VDD",		/* GPIO_23 */
+			  "GPIO_EXP_INT",	/* GPIO_24 */
+			  "BOARD_ID_0",		/* GPIO_25 */
+			  "SDIO1_SW_VDD",	/* GPIO_26 */
+			  "SDIO1_PON_VDD",	/* GPIO_27 */
+			  "SDIO2_SW_VDD",	/* GPIO_28 */
+			  "SDIO2_PON_VDD",	/* GPIO_29 */
+			  "BOARD_ID_1",		/* GPIO_30 */
+			  "BOARD_ID_2";		/* GPIO_31 */
+};

arch/arm64/boot/dts/blaize/blaize-blzp1600.dtsi

@@ -120,6 +120,18 @@
 						 IRQ_TYPE_LEVEL_LOW)>;
 		};
 
+		gpio0: gpio@4c0000 {
+			compatible = "blaize,blzp1600-gpio";
+			reg = <0x4c0000 0x1000>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			ngpios = <32>;
+			interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+			status = "disabled";
+		};
+
 		uart0: serial@4d0000 {
 			compatible = "ns16550a";
 			reg = <0x4d0000 0x1000>;