arm: dts: overlays: add Pi 5 variants for w1-gpio overlays

Make use of the latency-busting read-poll feature on Pi 5 only.

Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>

arch/arm/boot/dts/overlays/Makefile

@@ -310,7 +310,9 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	vga666.dtbo \
 	vl805.dtbo \
 	w1-gpio.dtbo \
+	w1-gpio-pi5.dtbo \
 	w1-gpio-pullup.dtbo \
+	w1-gpio-pullup-pi5.dtbo \
 	w5500.dtbo \
 	watterott-display.dtbo \
 	waveshare-can-fd-hat-mode-a.dtbo \

arch/arm/boot/dts/overlays/README

@@ -5056,6 +5056,10 @@ Params: gpiopin                 GPIO for I/O (default "4")
         pullup                  Now enabled by default (ignored)
 
 
+Name:   w1-gpio-pi5
+Info:   See w1-gpio (this is the Pi 5 version)
+
+
 Name:   w1-gpio-pullup
 Info:   Configures the w1-gpio Onewire interface module.
         Use this overlay if you *do* need a GPIO to drive an external pullup.
@@ -5065,6 +5069,10 @@ Params: gpiopin                 GPIO for I/O (default "4")
         pullup                  Now enabled by default (ignored)
 
 
+Name:   w1-gpio-pullup-pi5
+Info:   See w1-gpio-pullup (this is the Pi 5 version)
+
+
 Name:   w5500
 Info:   Overlay for the Wiznet W5500 Ethernet Controller on SPI0
 Load:   dtoverlay=w5500,<param>=<val>

arch/arm/boot/dts/overlays/overlay_map.dts

@@ -470,4 +470,25 @@
 	vl805 {
 		bcm2711;
 	};
+
+	w1-gpio {
+		bcm2835;
+		bcm2711;
+		bcm2712 = "w1-gpio-pi5";
+	};
+
+	w1-gpio-pi5 {
+		bcm2712;
+	};
+
+	w1-gpio-pullup {
+		bcm2835;
+		bcm2711;
+		bcm2712 = "w1-gpio-pullup-pi5";
+	};
+
+	w1-gpio-pullup-pi5 {
+		bcm2712;
+	};
+
 };

arch/arm/boot/dts/overlays/w1-gpio-pi5-overlay.dts

@@ -0,0 +1,15 @@
+/dts-v1/;
+/plugin/;
+
+#include "w1-gpio-overlay.dts"
+
+/ {
+	compatible = "brcm,bcm2712";
+
+	fragment@2 {
+		target = <&w1>;
+		__overlay__ {
+			raspberrypi,delay-needs-poll;
+		};
+	};
+};

arch/arm/boot/dts/overlays/w1-gpio-pullup-pi5-overlay.dts

@@ -0,0 +1,15 @@
+/dts-v1/;
+/plugin/;
+
+#include "w1-gpio-pullup-overlay.dts"
+
+/ {
+	compatible = "brcm,bcm2712";
+
+	fragment@2 {
+		target = <&w1>;
+		__overlay__ {
+			raspberrypi,delay-needs-poll;
+		};
+	};
+};