[PATCH 1/2] arm64: dts: mediatek: mt7988a-bpi-r4pro: add names for i2c-to-gpio chip

[Frank Wunderlich <linux@fw-web.de>]

From: Frank Wunderlich <frank-w@public-files.de>

Add line-names for the PCA9555 i2c to gpio expander to have more
information in debugfs.

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
---
 .../mediatek/mt7988a-bananapi-bpi-r4-pro.dtsi  | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-pro.dtsi b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-pro.dtsi
index 1eeb72108b9b..f54787fbbc71 100644
--- a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-pro.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-pro.dtsi
@@ -315,6 +315,24 @@ pca9555: i2c-gpio-expander@20 {
 				reg = <0x20>;
 				gpio-controller;
 				#gpio-cells = <2>;
+
+				gpio-line-names =
+					"BKEY-A-PDN",	/* GPIO0 */
+					"BKEY-A-Vset",	/* GPIO1 */
+					"BKEY-B-PDN",	/* GPIO2 */
+					"BKEY-B-Vset",	/* GPIO3 */
+					"BKEY-C-PDN",	/* GPIO4 */
+					"BKEY-C-Vset",	/* GPIO5 */
+					"SIM_SEL",	/* GPIO6 */
+					"mPCIe_AB_Vset",/* GPIO7 */
+					"mPCIe_A_PDN",	/* GPIO8 */
+					"mPCIe_B_PDN",	/* GPIO9 */
+					"BKEY-A-RST",	/* GPIO10 */
+					"VBUS_AB_PDN",	/* GPIO11 */
+					"BKEY-B-RST",	/* GPIO12 */
+					"BKEY-C-RST",	/* GPIO13 */
+					"SYS_LEDB",	/* GPIO14 */
+					"SYS_LEDR";	/* GPIO15 */
 			};
 
 			rtc@51 {
-- 
2.53.0