Add names to the pins of the general-purpose expansion header as given
in the Radxa GPIO page[1] following the conventions in the kernel
documentation[2] to make it easier for users to correlate the pins with
functions when using utilities such as 'gpioinfo'.
[1] https://wiki.radxa.com/RockpiE/hardware/gpio
[2] Documentation/devicetree/bindings/gpio/gpio.txt
Signed-off-by: Trevor Woerner <[email protected]>
---
.../boot/dts/rockchip/rk3328-rock-pi-e.dts | 53 +++++++++++++++++++
1 file changed, 53 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts b/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts
index 018a3a5075c7..3169c0854061 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts
@@ -388,3 +388,56 @@ &usbdrd3 {
&usb_host0_ehci {
status = "okay";
};
+
+&gpio0 {
+ gpio-line-names =
+ /* GPIO0_A0 - A7 */
+ "", "", "", "", "", "", "", "",
+ /* GPIO0_B0 - B7 */
+ "", "", "", "", "", "", "", "",
+ /* GPIO0_C0 - C7 */
+ "", "", "", "", "", "", "", "",
+ /* GPIO0_D0 - D7 */
+ "", "", "", "pin-15 [GPIO0_D3]", "", "", "", "";
+};
+
+&gpio1 {
+ gpio-line-names =
+ /* GPIO1_A0 - A7 */
+ "", "", "", "", "", "", "", "",
+ /* GPIO1_B0 - B7 */
+ "", "", "", "", "", "", "", "",
+ /* GPIO1_C0 - C7 */
+ "", "", "", "", "", "", "", "",
+ /* GPIO1_D0 - D7 */
+ "", "", "", "", "pin-07 [GPIO1_D4]", "", "", "";
+};
+
+&gpio2 {
+ gpio-line-names =
+ /* GPIO2_A0 - A7 */
+ "pin-08 [GPIO2_A0]", "pin-10 [GPIO2_A1]", "pin-11 [GPIO2_A2]",
+ "pin-13 [GPIO2-A3]", "pin-27 [GPIO2_A4]", "pin-28 [GPIO2_A5]",
+ "pin-33 [GPIO2_A6]", "",
+ /* GPIO2_B0 - B7 */
+ "", "", "", "", "pin-26 [GPIO2_B4]", "", "", "pin-36 [GPIO2_B7]",
+ /* GPIO2_C0 - C7 */
+ "pin-32 [GPIO2_C0]", "pin-35 [GPIO2_C1]", "pin-12 [GPIO2_C2]",
+ "pin-38 [GPIO2_C3]", "pin-29 [GPIO2_C4]", "pin-31 [GPIO2_C5]",
+ "pin-37 [GPIO2_C6]", "pin-40 [GPIO2_C7]",
+ /* GPIO2_D0 - D7 */
+ "", "", "", "", "", "", "", "";
+};
+
+&gpio3 {
+ gpio-line-names =
+ /* GPIO3_A0 - A7 */
+ "pin-23 [GPIO3_A0]", "pin-19 [GPIO3_A1]", "pin-21 [GPIO3_A2]",
+ "", "pin-03 [GPIO3_A4]", "", "pin-05 [GPIO3_A6]", "",
+ /* GPIO3_B0 - B7 */
+ "pin-24 [GPIO3_B0]", "", "", "", "", "", "", "",
+ /* GPIO3_C0 - C7 */
+ "", "", "", "", "", "", "", "",
+ /* GPIO3_D0 - D7 */
+ "", "", "", "", "", "", "", "";
+};
--
2.41.0.327.gaa9166bcc0ba