Merge tag 'hi6220-dt-for-4.8' of git://github.com/hisilicon/linux-hisi into next/dt64

ARM64: DT: Hisilicon Hi6220 hikey board updates for 4.8

- name the GPIO lines

* tag 'hi6220-dt-for-4.8' of git://github.com/hisilicon/linux-hisi:
  arm64: dts: hikey: name the GPIO lines

Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 143 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
index e92a30c87a82..593c7e43de79 100644
--- a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
+++ b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
@@ -66,6 +66,149 @@
                         status = "ok";
                 };
 
+                /*
+                 * Legend: proper name = the GPIO line is used as GPIO
+                 *         NC = not connected (not routed from the SoC)
+                 *         "[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
+                 *
+                 * Pin assignments taken from LeMaker and CircuitCo Schematics
+                 * Rev A1.
+                 *
+                 * 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
+                 * UART2. 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@f8011000 {
+                        gpio-line-names = "PWR_HOLD", "DSI_SEL",
+                        "USB_HUB_RESET_N", "USB_SEL", "HDMI_PD", "WL_REG_ON",
+                        "PWRON_DET", "5V_HUB_EN";
+                };
+
+                gpio1: gpio@f8012000 {
+                        gpio-line-names = "SD_DET", "HDMI_INT", "PMU_IRQ_N",
+                        "WL_HOST_WAKE", "NC", "NC", "NC", "BT_REG_ON";
+                };
+
+                gpio2: gpio@f8013000 {
+                        gpio-line-names =
+                                "GPIO-A", /* LSEC Pin 23: GPIO2_0 */
+                                "GPIO-B", /* LSEC Pin 24: GPIO2_1 */
+                                "GPIO-C", /* LSEC Pin 25: GPIO2_2 */
+                                "GPIO-D", /* LSEC Pin 26: GPIO2_3 */
+                                "GPIO-E", /* LSEC Pin 27: GPIO2_4 */
+                                "USB_ID_DET", "USB_VBUS_DET",
+                                "GPIO-H"; /* LSEC Pin 30: GPIO2_7 */
+                };
+
+                gpio3: gpio@f8014000 {
+                        gpio-line-names = "GPIO3_0", "NC", "NC", "", "NC", "",
+                        "WLAN_ACTIVE", "NC", "NC";
+                };
+
+                gpio4: gpio@f7020000 {
+                        gpio-line-names = "USER_LED1", "USER_LED2", "USER_LED3",
+                        "USER_LED4", "SD_SEL", "NC", "NC", "BT_ACTIVE";
+                };
+
+                gpio5: gpio@f7021000 {
+                        gpio-line-names = "NC", "NC",
+                        "[UART1_RxD]", /* LSEC Pin 11: UART3_RX */
+                        "[UART1_TxD]", /* LSEC Pin 13: UART3_TX */
+                        "[AUX_SSI1]", "NC",
+                        "[PCM_CLK]", /* LSEC Pin 18: MODEM_PCM_XCLK */
+                        "[PCM_FS]"; /* LSEC Pin 16: MODEM_PCM_XFS */
+                };
+
+                gpio6: gpio@f7022000 {
+                        gpio-line-names =
+                        "[SPI0_DIN]", /* Pin 10: SPI0_DI */
+                        "[SPI0_DOUT]", /* Pin 14: SPI0_DO */
+                        "[SPI0_CS]", /* Pin 12: SPI0_CS_N */
+                        "[SPI0_SCLK]", /* Pin 8: SPI0_SCLK */
+                        "NC", "NC", "NC",
+                        "GPIO-G"; /* Pin 29: GPIO6_7_DSI_TE0 */
+                };
+
+                gpio7: gpio@f7023000 {
+                        gpio-line-names = "NC", "NC", "NC", "NC",
+                        "[PCM_DI]", /* Pin 22: MODEM_PCM_DI */
+                        "[PCM_DO]", /* Pin 20: MODEM_PCM_DO */
+                        "NC", "NC";
+                };
+
+                gpio8: gpio@f7024000 {
+                        gpio-line-names = "NC", "[CEC_CLK_19_2MHZ]", "NC",
+                        "", "", "", "", "", "";
+                };
+
+                gpio9: gpio@f7025000 {
+                        gpio-line-names = "",
+                        "GPIO-J", /* LSEC Pin 32: ISP_PWDN0_GPIO9_1 */
+                        "GPIO-L", /* LSEC Pin 34: ISP_PWDN1_GPIO9_2 */
+                        "NC", "NC", "NC", "NC", "[ISP_CCLK0]";
+                };
+
+                gpio10: gpio@f7026000 {
+                        gpio-line-names = "BOOT_SEL",
+                        "[ISP_CCLK1]",
+                        "GPIO-I", /* LSEC Pin 31: ISP_RSTB0_GPIO10_2 */
+                        "GPIO-K", /* LSEC Pin 33: ISP_RSTB1_GPIO10_3 */
+                        "NC", "NC",
+                        "[I2C2_SDA]", /* HSEC Pin 34: ISP0_SDA */
+                        "[I2C2_SCL]"; /* HSEC Pin 32: ISP0_SCL */
+                };
+
+                gpio11: gpio@f7027000 {
+                        gpio-line-names =
+                        "[I2C3_SDA]", /* HSEC Pin 38: ISP1_SDA */
+                        "[I2C3_SCL]", /* HSEC Pin 36: ISP1_SCL */
+                        "", "NC", "NC", "NC", "", "";
+                };
+
+                gpio12: gpio@f7028000 {
+                        gpio-line-names = "[BT_PCM_XFS]", "[BT_PCM_DI]",
+                        "[BT_PCM_DO]",
+                        "NC", "NC", "NC", "NC",
+                        "GPIO-F"; /* LSEC Pin 28: BL_PWM_GPIO12_7 */
+                };
+
+                gpio13: gpio@f7029000 {
+                        gpio-line-names = "[UART0_RX]", "[UART0_TX]",
+                        "[BT_UART1_CTS]", "[BT_UART1_RTS]",
+                        "[BT_UART1_RX]", "[BT_UART1_TX]",
+                        "[UART0_CTS]", /* LSEC Pin 3: UART2_CTS_N */
+                        "[UART0_RTS]"; /* LSEC Pin 9: UART2_RTS_N */
+                };
+
+                gpio14: gpio@f702a000 {
+                        gpio-line-names =
+                        "[UART0_RxD]", /* LSEC Pin 7: UART2_RX */
+                        "[UART0_TxD]", /* LSEC Pin 5: UART2_TX */
+                        "[I2C0_SCL]", /* LSEC Pin 15: I2C0_SCL */
+                        "[I2C0_SDA]", /* LSEC Pin 17: I2C0_SDA */
+                        "[I2C1_SCL]", /* LSEC Pin 19: I2C1_SCL */
+                        "[I2C1_SDA]", /* LSEC Pin 21: I2C1_SDA */
+                        "[I2C2_SCL]", "[I2C2_SDA]";
+                };
+
+                gpio15: gpio@f702b000 {
+                        gpio-line-names = "", "", "", "", "", "", "NC", "";
+                };
+
+                /* GPIO blocks 16 thru 19 do not appear to be routed to pins */
+
                 dwmmc_2: dwmmc2@f723f000 {
                         ti,non-removable;
                         non-removable;