linux-kernel - [PATCH] ARM: dts: Update Nanobone DTS

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Date:   Wed,  9 Nov 2022 14:30:03 +0000
From:   Mark Jackson <mpfj@...flow.co.uk>
To:     Benoît Cousson <bcousson@...libre.com>,
        Tony Lindgren <tony@...mide.com>,
        Mark Jackson <mpfj@...flow.co.uk>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] ARM: dts: Update Nanobone DTS

Update Nanobone DTS file as follows:-
- Fix GPIO settings for RTS/CTS pins on UART3 & 4
- Enable RS485 mode for UART3 & 4
- Enable LM75 temperature sensor
- Fix GPIO settings for MMC pins
- Enable USB
---
 arch/arm/boot/dts/am335x-nano.dts | 33 +++++++++++++++++++++++++------
 1 file changed, 27 insertions(+), 6 deletions(-)

diff --git a/arch/arm/boot/dts/am335x-nano.dts b/arch/arm/boot/dts/am335x-nano.dts
index b6f2567bd65a..1f613e879c53 100644
--- a/arch/arm/boot/dts/am335x-nano.dts
+++ b/arch/arm/boot/dts/am335x-nano.dts
@@ -120,8 +120,8 @@ AM33XX_PADCONF(AM335X_PIN_SPI0_D0, PIN_OUTPUT, MUX_MODE1)		/* spi0_d0.uart2_txd
 
 	uart3_pins: uart3_pins {
 		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA10, PIN_INPUT_PULLUP, MUX_MODE6)	/* lcd_data10.uart3_ctsn */
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA11, PIN_OUTPUT, MUX_MODE6)		/* lcd_data11.uart3_rtsn */
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA10, PIN_INPUT_PULLUP, MUX_MODE7)	/* lcd_data10.gpio2[16] */
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA11, PIN_OUTPUT, MUX_MODE7)		/* lcd_data11.gpio2[17] */
 			AM33XX_PADCONF(AM335X_PIN_SPI0_CS1, PIN_INPUT, MUX_MODE1)		/* spi0_cs1.uart3_rxd */
 			AM33XX_PADCONF(AM335X_PIN_ECAP0_IN_PWM0_OUT, PIN_OUTPUT, MUX_MODE1)		/* ecap0_in_pwm0_out.uart3_txd */
 		>;
@@ -129,8 +129,8 @@ AM33XX_PADCONF(AM335X_PIN_ECAP0_IN_PWM0_OUT, PIN_OUTPUT, MUX_MODE1)		/* ecap0_in
 
 	uart4_pins: uart4_pins {
 		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA12, PIN_INPUT_PULLUP, MUX_MODE6)	/* lcd_data12.uart4_ctsn */
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA13, PIN_OUTPUT, MUX_MODE6)		/* lcd_data13.uart4_rtsn */
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA12, PIN_INPUT_PULLUP, MUX_MODE7)	/* lcd_data12.gpio0[8] */
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA13, PIN_OUTPUT, MUX_MODE7)		/* lcd_data13.gpio0[9] */
 			AM33XX_PADCONF(AM335X_PIN_UART0_CTSN, PIN_INPUT, MUX_MODE1)		/* uart0_ctsn.uart4_rxd */
 			AM33XX_PADCONF(AM335X_PIN_UART0_RTSN, PIN_OUTPUT, MUX_MODE1)		/* uart0_rtsn.uart4_txd */
 		>;
@@ -188,12 +188,22 @@ &uart3 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart3_pins>;
 	status = "okay";
+	rts-gpio = <&gpio2 17 GPIO_ACTIVE_HIGH>;
+	rs485-rts-active-high;
+	rs485-rx-during-tx;
+	rs485-rts-delay = <1 1>;
+	linux,rs485-enabled-at-boot-time;
 };
 
 &uart4 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart4_pins>;
 	status = "okay";
+	rts-gpio = <&gpio0 9 GPIO_ACTIVE_HIGH>;
+	rs485-rts-active-high;
+	rs485-rx-during-tx;
+	rs485-rts-delay = <1 1>;
+	linux,rs485-enabled-at-boot-time;
 };
 
 &uart5 {
@@ -220,6 +230,12 @@ tps: tps@24 {
 		reg = <0x24>;
 	};
 
+	lm75@48 {
+		compatible = "lm75";
+		reg = <0x48>;
+		status = "okay";
+	};
+
 	eeprom@53 {
 		compatible = "microchip,24c02", "atmel,24c02";
 		reg = <0x53>;
@@ -403,8 +419,13 @@ &mmc1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&mmc1_pins>;
 	bus-width = <4>;
-	cd-gpios = <&gpio3 8 0>;
-	wp-gpios = <&gpio3 18 0>;
+	cd-debounce-delay-ms = <5>;
+	cd-gpios = <&gpio3 8 GPIO_ACTIVE_LOW>;
+	wp-gpios = <&gpio3 18 GPIO_ACTIVE_HIGH>;
+};
+
+&usb0 {
+	dr_mode = "host";
 };
 
 #include "tps65217.dtsi"
-- 
2.34.1