diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0444-overlays-Update-w1-gpio-and-w1-gpio-pullup.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0444-overlays-Update-w1-gpio-and-w1-gpio-pullup.patch | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0444-overlays-Update-w1-gpio-and-w1-gpio-pullup.patch b/target/linux/brcm2708/patches-4.19/950-0444-overlays-Update-w1-gpio-and-w1-gpio-pullup.patch new file mode 100644 index 0000000000..f19a6380ce --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0444-overlays-Update-w1-gpio-and-w1-gpio-pullup.patch @@ -0,0 +1,78 @@ +From 531ae7af75b2be2867814693f069fb51e3155341 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Wed, 12 Jun 2019 17:32:11 +0100 +Subject: [PATCH] overlays: Update w1-gpio and w1-gpio-pullup + +The parasitic power (power on data) feature is now enabled by +default in the w1-gpio driver, so update the README and make the +"pullup" parameter a no-op. + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + arch/arm/boot/dts/overlays/README | 9 ++------- + arch/arm/boot/dts/overlays/w1-gpio-overlay.dts | 3 +-- + arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts | 3 +-- + 3 files changed, 4 insertions(+), 11 deletions(-) + +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -2261,9 +2261,7 @@ Info: Configures the w1-gpio Onewire i + Use this overlay if you *don't* need a GPIO to drive an external pullup. + Load: dtoverlay=w1-gpio,<param>=<val> + Params: gpiopin GPIO for I/O (default "4") +- +- pullup Non-zero, "on", or "y" to enable the parasitic +- power (2-wire, power-on-data) feature ++ pullup Now enabled by default (ignored) + + + Name: w1-gpio-pullup +@@ -2271,11 +2269,8 @@ Info: Configures the w1-gpio Onewire i + Use this overlay if you *do* need a GPIO to drive an external pullup. + Load: dtoverlay=w1-gpio-pullup,<param>=<val> + Params: gpiopin GPIO for I/O (default "4") +- +- pullup Non-zero, "on", or "y" to enable the parasitic +- power (2-wire, power-on-data) feature +- + extpullup GPIO for external pullup (default "5") ++ pullup Now enabled by default (ignored) + + + Name: wittypi +--- a/arch/arm/boot/dts/overlays/w1-gpio-overlay.dts ++++ b/arch/arm/boot/dts/overlays/w1-gpio-overlay.dts +@@ -14,7 +14,6 @@ + pinctrl-names = "default"; + pinctrl-0 = <&w1_pins>; + gpios = <&gpio 4 0>; +- rpi,parasitic-power = <0>; + status = "okay"; + }; + }; +@@ -36,6 +35,6 @@ + <&w1>,"reg:0", + <&w1_pins>,"brcm,pins:0", + <&w1_pins>,"reg:0"; +- pullup = <&w1>,"rpi,parasitic-power:0"; ++ pullup; // Silently ignore unneeded parameter + }; + }; +--- a/arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts ++++ b/arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts +@@ -14,7 +14,6 @@ + pinctrl-names = "default"; + pinctrl-0 = <&w1_pins>; + gpios = <&gpio 4 0>, <&gpio 5 1>; +- rpi,parasitic-power = <0>; + status = "okay"; + }; + }; +@@ -38,6 +37,6 @@ + <&w1_pins>,"reg:0"; + extpullup = <&w1>,"gpios:16", + <&w1_pins>,"brcm,pins:4"; +- pullup = <&w1>,"rpi,parasitic-power:0"; ++ pullup; // Silently ignore unneeded parameter + }; + }; |