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[PATCH 1/1] dts: qcom: db820c: Add gpio-line-names property




Add gpio-line-names property for Dragonboard820c based on APQ8096 SoC.
There are 4 gpio-controllers present on this board, including the
APQ8096 SoC, PM8994 (GPIO and MPP) and PMI8994 (GPIO).

Lines names are derived from 96Boards CE Specification 1.0, Appendix
"Expansion Connector Signal Description". Line names for PMI8994 MPP
pins are not added due to the absence of the gpio-controller support.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi | 240 +++++++++++++++++++++++++++
 1 file changed, 240 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
index 1c8f1b86472d..1c1deef031c6 100644
--- a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
@@ -19,6 +19,34 @@
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/gpio/gpio.h>
 
+/*
+ * GPIO name 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)
+ *         LSEC    = Low Speed External Connector
+ *         HSEC    = High Speed External Connector
+ *         P HSEC  = Primary High Speed External Connector
+ *         S HSEC  = Secondary High Speed External Connector
+ *         J14     = Camera Connector
+ *         TP      = Test Points
+ *
+ * Line names are taken from the schematic "DragonBoard 820c",
+ * drawing no: LM25-P2751-1
+ *
+ * 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.
+ */
+
 / {
 	aliases {
 		serial0 = &blsp2_uart1;
@@ -90,6 +118,218 @@
 			status = "okay";
 		};
 
+		pinctrl@1010000 {
+			gpio-line-names =
+				"[SPI0_DOUT]", /* GPIO_0, LSEC pin 14 */
+				"[SPI0_DIN]", /* GPIO_1, LSEC pin 10 */
+				"[SPI0_CS]", /* GPIO_2, LSEC pin 12 */
+				"[SPI0_SCLK]", /* GPIO_3, LSEC pin 8 */
+				"[UART1_TxD]", /* GPIO_4, LSEC pin 11 */
+				"[UART1_RxD]", /* GPIO_5, LSEC pin 13 */
+				"[I2C1_SDA]", /* GPIO_6, LSEC pin 21 */
+				"[I2C1_SCL]", /* GPIO_7, LSEC pin 19 */
+				"GPIO-H", /* GPIO_8, LSEC pin 30 */
+				"TP93", /* GPIO_9 */
+				"GPIO-G", /* GPIO_10, LSEC pin 29 */
+				"[MDP_VSYNC_S]", /* GPIO_11, P HSEC pin 55 */
+				"NC", /* GPIO_12 */
+				"[CSI0_MCLK]", /* GPIO_13, P HSEC pin 15 */
+				"[CAM_MCLK1]", /* GPIO_14, J14 pin 11 */
+				"[CSI1_MCLK]", /* GPIO_15, P HSEC pin 17 */
+				"TP99", /* GPIO_16 */
+				"[I2C2_SDA]", /* GPIO_17, P HSEC pin 34 */
+				"[I2C2_SCL]", /* GPIO_18, P HSEC pin 32 */
+				"[CCI_I2C_SDA1]", /* GPIO_19, S HSEC pin 38 */
+				"[CCI_I2C_SCL1]", /* GPIO_20, S HSEC pin 36 */
+				"FLASH_STROBE_EN", /* GPIO_21, S HSEC pin 5 */
+				"FLASH_STROBE_TRIG", /* GPIO_22, S HSEC pin 1 */
+				"GPIO-K", /* GPIO_23, LSEC pin 33 */
+				"GPIO-D", /* GPIO_24, LSEC pin 26 */
+				"GPIO-I", /* GPIO_25, LSEC pin 31 */
+				"GPIO-J", /* GPIO_26, LSEC pin 32 */
+				"BLSP6_I2C_SDA", /* GPIO_27 */
+				"BLSP6_I2C_SCL", /* GPIO_28 */
+				"GPIO-B", /* GPIO_29, LSEC pin 24 */
+				"GPIO30", /* GPIO_30, S HSEC pin 4 */
+				"HDMI_CEC", /* GPIO_31 */
+				"HDMI_DDC_CLOCK", /* GPIO_32 */
+				"HDMI_DDC_DATA", /* GPIO_33 */
+				"HDMI_HOT_PLUG_DETECT", /* GPIO_34 */
+				"PCIE0_RST_N", /* GPIO_35 */
+				"PCIE0_CLKREQ_N", /* GPIO_36 */
+				"PCIE0_WAKE", /* GPIO_37 */
+				"SD_CARD_DET_N", /* GPIO_38 */
+				"TSIF1_SYNC", /* GPIO_39, S HSEC pin 48 */
+				"W_DISABLE_N", /* GPIO_40 */
+				"[BLSP9_UART_TX]", /* GPIO_41 */
+				"[BLSP9_UART_RX]", /* GPIO_42 */
+				"[BLSP2_UART_CTS_N]", /* GPIO_43 */
+				"[BLSP2_UART_RFR_N]", /* GPIO_44 */
+				"[BLSP3_UART_TX]", /* GPIO_45 */
+				"[BLSP3_UART_RX]", /* GPIO_46 */
+				"[I2C0_SDA]", /* GPIO_47 LSEC pin 17 */
+				"[I2C0_SCL]", /* GPIO_48 LSEC pin 15 */
+				"[UART0_TxD]", /* GPIO_49 LSEC pin 5 */
+				"[UART0_RxD]", /* GPIO_50 LSEC pin 7 */
+				"[UART0_CTS]", /* GPIO_51 LSEC pin 3 */
+				"[UART0_RTS]", /* GPIO_52 LSEC pin 9 */
+				"[CODEC_INT1_N]", /* GPIO_53 */
+				"[CODEC_INT2_N]", /* GPIO_54 */
+				"[BLSP7_I2C_SDA]", /* GPIO_55 */
+				"[BLSP7_I2C_SCL]", /* GPIO_56 */
+				"MI2S_MCLK", /* GPIO_57, S HSEC pin 3 */
+				"[PCM_CLK]", /* GPIO_58 LSEC pin 18 */
+				"[PCM_FS]", /* GPIO_59 LSEC pin 16 */
+				"[PCM_DO]", /* GPIO_60 LSEC pin 20 */
+				"[PCM_DI]", /* GPIO_61 LSEC pin 22 */
+				"GPIO-E", /* GPIO_62, LSEC pin 27 */
+				"TP87", /* GPIO_63 */
+				"[CODEC_RST_N]", /* GPIO_64 */
+				"[PCM1_CLK]", /* GPIO_65 */
+				"[PCM1_SYNC]", /* GPIO_66 */
+				"[PCM1_DIN]", /* GPIO_67 */
+				"[PCM1_DOUT]", /* GPIO_68 */
+				"AUDIO_REF_CLK", /* GPIO_69 */
+				"SLIMBUS_CLK", /* GPIO_70 */
+				"SLIMBUS_DATA0", /* GPIO_71 */
+				"SLIMBUS_DATA1", /* GPIO_72 */
+				"NC", /* GPIO_73 */
+				"NC", /* GPIO_74 */
+				"NC", /* GPIO_75 */
+				"NC", /* GPIO_76 */
+				"TP94", /* GPIO_77 */
+				"NC", /* GPIO_78 */
+				"TP95", /* GPIO_79 */
+				"GPIO-A", /* GPIO_80, LSEC pin 23 */
+				"TP88", /* GPIO_81 */
+				"TP89", /* GPIO_82 */
+				"TP90", /* GPIO_83 */
+				"TP91", /* GPIO_84 */
+				"[SD_DAT0]", /* GPIO_85, HSEC pin 1 */
+				"[SD_CMD]", /* GPIO_86, HSEC pin 11 */
+				"[SD_DAT3]", /* GPIO_87, HSEC pin 7 */
+				"[SD_SCLK]", /* GPIO_88, HSEC pin 9 */
+				"TSIF1_CLK", /* GPIO_89, S HSEC pin 42 */
+				"TSIF1_EN", /* GPIO_90, S HSEC pin 46 */
+				"TSIF1_DATA", /* GPIO_91, S HSEC pin 44 */
+				"NC", /* GPIO_92 */
+				"TSIF2_CLK", /* GPIO_93, S HSEC pin 52 */
+				"TSIF2_EN", /* GPIO_94, S HSEC pin 56 */
+				"TSIF2_DATA", /* GPIO_95, S HSEC pin 54 */
+				"TSIF2_SYNC", /* GPIO_96, S HSEC pin 58 */
+				"NC", /* GPIO_97 */
+				"CAM1_STANDBY_N", /* GPIO_98 */
+				"NC", /* GPIO_99 */
+				"NC", /* GPIO_100 */
+				"[LCD1_RESET_N]", /* GPIO_101, S HSEC pin 51 */
+				"BOOT_CONFIG1", /* GPIO_102 */
+				"USB_HUB_RESET", /* GPIO_103 */
+				"CAM1_RST_N", /* GPIO_104 */
+				"NC", /* GPIO_105 */
+				"NC", /* GPIO_106 */
+				"NC", /* GPIO_107 */
+				"NC", /* GPIO_108 */
+				"NC", /* GPIO_109 */
+				"NC", /* GPIO_110 */
+				"NC", /* GPIO_111 */
+				"NC", /* GPIO_112 */
+				"PMI8994_BUA", /* GPIO_113 */
+				"PCIE2_RST_N", /* GPIO_114 */
+				"PCIE2_CLKREQ_N", /* GPIO_115 */
+				"PCIE2_WAKE", /* GPIO_116 */
+				"SSC_IRQ_0", /* GPIO_117 */
+				"SSC_IRQ_1", /* GPIO_118 */
+				"SSC_IRQ_2", /* GPIO_119 */
+				"NC", /* GPIO_120 */
+				"GPIO121", /* GPIO_121, S HSEC pin 2 */
+				"NC", /* GPIO_122 */
+				"SSC_IRQ_6", /* GPIO_123 */
+				"SSC_IRQ_7", /* GPIO_124 */
+				"GPIO-C", /* GPIO_125, LSEC pin 25 */
+				"BOOT_CONFIG5", /* GPIO_126 */
+				"NC", /* GPIO_127 */
+				"NC", /* GPIO_128 */
+				"BOOT_CONFIG7", /* GPIO_129 */
+				"PCIE1_RST_N", /* GPIO_130 */
+				"PCIE1_CLKREQ_N", /* GPIO_131 */
+				"PCIE1_WAKE", /* GPIO_132 */
+				"GPIO-L", /* GPIO_133, LSEC pin 34 */
+				"NC", /* GPIO_134 */
+				"NC", /* GPIO_135 */
+				"BOOT_CONFIG8", /* GPIO_136 */
+				"NC", /* GPIO_137 */
+				"NC", /* GPIO_138 */
+				"GPS_SSBI2", /* GPIO_139 */
+				"GPS_SSBI1", /* GPIO_140 */
+				"NC", /* GPIO_141 */
+				"NC", /* GPIO_142 */
+				"NC", /* GPIO_143 */
+				"BOOT_CONFIG6", /* GPIO_144 */
+				"NC", /* GPIO_145 */
+				"NC", /* GPIO_146 */
+				"NC", /* GPIO_147 */
+				"NC", /* GPIO_148 */
+				"NC"; /* GPIO_149 */
+		};
+
+		qcom,spmi@400f000 {
+			pmic@0 {
+				gpios@c000 {
+					gpio-line-names =
+						"NC",
+						"KEY_VOLP_N",
+						"NC",
+						"BL1_PWM",
+						"GPIO-F", /* LSEC pin 28 */
+						"BL1_EN",
+						"NC",
+						"WLAN_EN",
+						"NC",
+						"NC",
+						"NC",
+						"NC",
+						"NC",
+						"NC",
+						"DIVCLK1",
+						"DIVCLK2",
+						"DIVCLK3",
+						"DIVCLK4",
+						"BT_EN",
+						"PMIC_SLB",
+						"PMIC_BUA",
+						"USB_VBUS_DET";
+				};
+
+				mpps@a000 {
+					gpio-line-names =
+						"VDDPX_BIAS",
+						"WIFI_LED",
+						"NC",
+						"BT_LED",
+						"PM_MPP05",
+						"PM_MPP06",
+						"PM_MPP07",
+						"NC";
+				};
+			};
+
+			pmic@2 {
+				gpios@c000 {
+					gpio-line-names =
+						"NC",
+						"SPKR_AMP_EN1",
+						"SPKR_AMP_EN2",
+						"TP61",
+						"NC",
+						"USB2_VBUS_DET",
+						"NC",
+						"NC",
+						"NC",
+						"NC";
+				};
+			};
+		};
+
 		phy@34000 {
 			status = "okay";
 		};
-- 
2.14.1