This names the GPIO lines on the APQ8016 "SBC" also known
as the DragonBoard 410c, according to the schematic. This
is necessary for a conforming userspace looking across
all GPIO chips for the GPIO lines named "GPIO-A" thru
"GPIO-L".
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
ChangeLog v1->v2:
- Put the GPIO line names into the .dtsi file for the
SBC as requested.
- Put the GPIO line names into the hierarchical SoC
DTS structure as requested.
- Adjusted legend text to only cover used terminology.
- Insert proper comments telling which line on the LSEC
or HSEC a certain line is routed to.
I don't have this hardware available, you can test it
easily by compiling tools/gpio/* and issue "lsgpio" to
see the GPIO line names in the console.
---
arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi | 169 ++++++++++++++++++++++++++++++
1 file changed, 169 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi b/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
index 1d63e6b879de..a67bb7f0e48e 100644
--- a/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
@@ -19,6 +19,30 @@
#include <dt-bindings/input/input.h>
#include <dt-bindings/sound/apq8016-lpass.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
+ *
+ * Line names are taken from the schematic "DragonBoard410c"
+ * dated monday, august 31, 2015. Page 5 in particular.
+ *
+ * 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 = &blsp1_uart2;
@@ -47,6 +71,132 @@
};
soc {
+ pinctrl@1000000 {
+ gpio-line-names =
+ "[UART0_TX]", /* GPIO_0, LSEC pin 5 */
+ "[UART0_RX]", /* GPIO_1, LSEC pin 7 */
+ "[UART0_CTS_N]", /* GPIO_2, LSEC pin 3 */
+ "[UART0_RTS_N]", /* GPIO_3, LSEC pin 9 */
+ "[UART1_TX]", /* GPIO_4, LSEC pin 11 */
+ "[UART1_RX]", /* GPIO_5, LSEC pin 13 */
+ "[I2C0_SDA]", /* GPIO_8, LSEC pin 17 */
+ "[I2C0_SCL]", /* GPIO_7, LSEC pin 15 */
+ "[SPI1_DOUT]", /* SPI1_MOSI, HSEC pin 1 */
+ "[SPI1_DIN]", /* SPI1_MISO, HSEC pin 11 */
+ "[SPI1_CS]", /* SPI1_CS_N, HSEC pin 7 */
+ "[SPI1_SCLK]", /* SPI1_CLK, HSEC pin 9 */
+ "GPIO-B", /* LS_EXP_GPIO_B, LSEC pin 24 */
+ "GPIO-C", /* LS_EXP_GPIO_C, LSEC pin 25 */
+ "[I2C3_SDA]", /* HSEC pin 38 */
+ "[I2C3_SCL]", /* HSEC pin 36 */
+ "[SPI0_MOSI]", /* LSEC pin 14 */
+ "[SPI0_MISO]", /* LSEC pin 10 */
+ "[SPI0_CS_N]", /* LSEC pin 12 */
+ "[SPI0_CLK]", /* LSEC pin 8 */
+ "HDMI_HPD_N", /* GPIO 20 */
+ "USR_LED_1_CTRL",
+ "[I2C1_SDA]", /* GPIO_22, LSEC pin 21 */
+ "[I2C1_SCL]", /* GPIO_23, LSEC pin 19 */
+ "GPIO-G", /* LS_EXP_GPIO_G, LSEC pin 29 */
+ "GPIO-H", /* LS_EXP_GPIO_H, LSEC pin 30 */
+ "[CSI0_MCLK]", /* HSEC pin 15 */
+ "[CSI1_MCLK]", /* HSEC pin 17 */
+ "GPIO-K", /* LS_EXP_GPIO_K, LSEC pin 33 */
+ "[I2C2_SDA]", /* HSEC pin 34 */
+ "[I2C2_SCL]", /* HSEC pin 32 */
+ "DSI2HDMI_INT_N",
+ "DSI_SW_SEL_APQ",
+ "GPIO-L", /* LS_EXP_GPIO_L, LSEC pin 34 */
+ "GPIO-J", /* LS_EXP_GPIO_J, LSEC pin 32 */
+ "GPIO-I", /* LS_EXP_GPIO_I, LSEC pin 31 */
+ "GPIO-A", /* LS_EXP_GPIO_A, LSEC pin 23 */
+ "FORCED_USB_BOOT",
+ "SD_CARD_DET_N",
+ "[WCSS_BT_SSBI]",
+ "[WCSS_WLAN_DATA_2]", /* GPIO 40 */
+ "[WCSS_WLAN_DATA_1]",
+ "[WCSS_WLAN_DATA_0]",
+ "[WCSS_WLAN_SET]",
+ "[WCSS_WLAN_CLK]",
+ "[WCSS_FM_SSBI]",
+ "[WCSS_FM_SDI]",
+ "[WCSS_BT_DAT_CTL]",
+ "[WCSS_BT_DAT_STB]",
+ "NC",
+ "NC", /* GPIO 50 */
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC", /* GPIO 60 */
+ "NC",
+ "NC",
+ "[CDC_PDM0_CLK]",
+ "[CDC_PDM0_SYNC]",
+ "[CDC_PDM0_TX0]",
+ "[CDC_PDM0_RX0]",
+ "[CDC_PDM0_RX1]",
+ "[CDC_PDM0_RX2]",
+ "GPIO-D", /* LS_EXP_GPIO_D, LSEC pin 26 */
+ "NC", /* GPIO 70 */
+ "NC",
+ "NC",
+ "NC",
+ "NC", /* GPIO 74 */
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "BOOT_CONFIG_0", /* GPIO 80 */
+ "BOOT_CONFIG_1",
+ "BOOT_CONFIG_2",
+ "BOOT_CONFIG_3",
+ "NC",
+ "NC",
+ "BOOT_CONFIG_5",
+ "NC",
+ "NC",
+ "NC",
+ "NC", /* GPIO 90 */
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC", /* GPIO 100 */
+ "NC",
+ "NC",
+ "NC",
+ "SSBI_GPS",
+ "NC",
+ "NC",
+ "KEY_VOLP_N",
+ "NC",
+ "NC",
+ "[LS_EXP_MI2S_WS]", /* GPIO 110 */
+ "NC",
+ "NC",
+ "[LS_EXP_MI2S_SCK]",
+ "[LS_EXP_MI2S_DATA0]",
+ "GPIO-E", /* LS_EXP_GPIO_E, LSEC pin 27 */
+ "NC",
+ "[DSI2HDMI_MI2S_WS]",
+ "[DSI2HDMI_MI2S_SCK]",
+ "[DSI2HDMI_MI2S_DATA0]",
+ "USR_LED_2_CTRL", /* GPIO 120 */
+ "SB_HS_ID";
+ };
+
dma@7884000 {
status = "okay";
};
@@ -329,6 +479,25 @@
};
};
+ spmi@200f000 {
+ pm8916@0 {
+ gpios@c000 {
+ gpio-line-names =
+ "USR_LED_3_CTRL",
+ "USR_LED_4_CTRL",
+ "USB_HUB_RESET_N_PM",
+ "USB_SW_SEL_PM";
+ };
+ mpps@a000 {
+ gpio-line-names =
+ "VDD_PX_BIAS",
+ "WLAN_LED_CTRL",
+ "BT_LED_CTRL",
+ "GPIO-F"; /* LS_EXP_GPIO_F, LSEC pin 28 */
+ };
+ };
+ };
+
wcnss@a21b000 {
status = "okay";
};
--
2.13.5
--
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