1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
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
};
};
|
