linux-kernel - [PATCH] riscv: dts: nezha-d1: add gpio-line-names

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Date:   Tue,  7 Feb 2023 20:45:03 -0500
From:   Trevor Woerner <twoerner@...il.com>
To:     linux-kernel@...r.kernel.org, Conor Dooley <conor@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>
Cc:     linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev
Subject: [PATCH] riscv: dts: nezha-d1: add gpio-line-names

Add descriptive names so users can associate specific lines with their
respective pins on the 40-pin header according to the schematics found at:

	http://dl.linux-sunxi.org/D1/D1_Nezha_development_board_schematic_diagram_20210224.pdf

Signed-off-by: Trevor Woerner <twoerner@...il.com>
---
 .../boot/dts/allwinner/sun20i-d1-nezha.dts    | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/arch/riscv/boot/dts/allwinner/sun20i-d1-nezha.dts b/arch/riscv/boot/dts/allwinner/sun20i-d1-nezha.dts
index a0769185be97..33489c7619cb 100644
--- a/arch/riscv/boot/dts/allwinner/sun20i-d1-nezha.dts
+++ b/arch/riscv/boot/dts/allwinner/sun20i-d1-nezha.dts
@@ -90,6 +90,15 @@ pcf8574a: gpio@38 {
 		gpio-controller;
 		#gpio-cells = <2>;
 		#interrupt-cells = <2>;
+		gpio-line-names =
+			"pin13 [PP0,gpio8] ",
+			"pin16 [PP1,gpio10]",
+			"pin18 [PP2,gpio11]",
+			"pin26 [PP3,gpio17]",
+			"pin22 [PP4,gpio14]",
+			"pin28 [PP5,gpio19]",
+			"pin37 [PP6,gpio23]",
+			"pin11 [PP7,gpio6] ";
 	};
 };
 
@@ -164,3 +173,47 @@ &usbphy {
 	usb1_vbus-supply = <&reg_vcc>;
 	status = "okay";
 };
+
+&pio {
+	gpio-line-names =
+		/* Port A */
+		"", "", "", "", "", "", "", "",
+		"", "", "", "", "", "", "", "",
+		"", "", "", "", "", "", "", "",
+		"", "", "", "", "", "", "", "",
+		/* Port B */
+		"pin5  [PB0, gpio2/twi2-sck]",
+		"pin3  [PB1, gpio1/twi2-sda]",
+		"",
+		"pin38 [PB3, gpio24/i2s2-din]",
+		"pin40 [PB4, gpio25/i2s2-dout]",
+		"pin12 [PB5, gpio7/i2s-clk]",
+		"pin35 [PB6, gpio22/i2s2-lrck]",
+		"",
+		"pin8  [PB8, gpio4/uart0-txd]",
+		"pin10 [PB9, gpio5/uart0-rxd]",
+		"",
+		"",
+		"pin15 [PB12,gpio9]",
+		"", "", "", "",
+		"", "", "", "", "", "", "", "",
+		"", "", "", "", "", "", "", "",
+		/* Port C */
+		"",
+		"pin31 [PC1, gpio21]",
+		"", "", "", "", "", "",
+		"", "", "", "", "", "", "", "",
+		"", "", "", "", "", "", "", "",
+		"", "", "", "", "", "", "", "",
+		/* Port D */
+		"", "", "", "", "", "", "", "",
+		"", "",
+		"pin24 [PD10,gpio16/spi1-ce0]",
+		"pin23 [PD11,gpio15/spi1-clk]",
+		"pin19 [PD12,gpio12/spi1-mosi]",
+		"pin21 [PD13,gpio13/spi1-miso]",
+		"pin27 [PD14,gpio18/spi1-hold]",
+		"pin29 [PD15,gpio20/spi1-wp]",
+		"", "", "", "", "", "",
+		"pin7  [PD22,gpio3/pwm]";
+};
-- 
2.36.0.rc2.17.g4027e30c53