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79 lines
2.7 KiB
Diff
79 lines
2.7 KiB
Diff
From 531ae7af75b2be2867814693f069fb51e3155341 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Wed, 12 Jun 2019 17:32:11 +0100
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Subject: [PATCH] overlays: Update w1-gpio and w1-gpio-pullup
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The parasitic power (power on data) feature is now enabled by
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default in the w1-gpio driver, so update the README and make the
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"pullup" parameter a no-op.
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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arch/arm/boot/dts/overlays/README | 9 ++-------
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arch/arm/boot/dts/overlays/w1-gpio-overlay.dts | 3 +--
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arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts | 3 +--
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3 files changed, 4 insertions(+), 11 deletions(-)
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -2261,9 +2261,7 @@ Info: Configures the w1-gpio Onewire i
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Use this overlay if you *don't* need a GPIO to drive an external pullup.
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Load: dtoverlay=w1-gpio,<param>=<val>
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Params: gpiopin GPIO for I/O (default "4")
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-
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- pullup Non-zero, "on", or "y" to enable the parasitic
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- power (2-wire, power-on-data) feature
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+ pullup Now enabled by default (ignored)
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Name: w1-gpio-pullup
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@@ -2271,11 +2269,8 @@ Info: Configures the w1-gpio Onewire i
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Use this overlay if you *do* need a GPIO to drive an external pullup.
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Load: dtoverlay=w1-gpio-pullup,<param>=<val>
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Params: gpiopin GPIO for I/O (default "4")
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-
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- pullup Non-zero, "on", or "y" to enable the parasitic
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- power (2-wire, power-on-data) feature
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-
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extpullup GPIO for external pullup (default "5")
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+ pullup Now enabled by default (ignored)
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Name: wittypi
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--- a/arch/arm/boot/dts/overlays/w1-gpio-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/w1-gpio-overlay.dts
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@@ -14,7 +14,6 @@
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pinctrl-names = "default";
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pinctrl-0 = <&w1_pins>;
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gpios = <&gpio 4 0>;
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- rpi,parasitic-power = <0>;
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status = "okay";
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};
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};
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@@ -36,6 +35,6 @@
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<&w1>,"reg:0",
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<&w1_pins>,"brcm,pins:0",
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<&w1_pins>,"reg:0";
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- pullup = <&w1>,"rpi,parasitic-power:0";
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+ pullup; // Silently ignore unneeded parameter
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};
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};
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--- a/arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts
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@@ -14,7 +14,6 @@
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pinctrl-names = "default";
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pinctrl-0 = <&w1_pins>;
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gpios = <&gpio 4 0>, <&gpio 5 1>;
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- rpi,parasitic-power = <0>;
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status = "okay";
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};
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};
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@@ -38,6 +37,6 @@
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<&w1_pins>,"reg:0";
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extpullup = <&w1>,"gpios:16",
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<&w1_pins>,"brcm,pins:4";
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- pullup = <&w1>,"rpi,parasitic-power:0";
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+ pullup; // Silently ignore unneeded parameter
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};
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};
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