summaryrefslogtreecommitdiff
path: root/target/linux/brcm2708/patches-4.4/0109-dts-Added-overlay-for-Adafruit-PiTFT-2.8-capacitive-.patch
blob: 480d8db6a09b8fe343ee57dc787f7e59506bb492 (plain)
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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
From 1a4fac1ea6bb33a963b06406f6f44b527daa3a90 Mon Sep 17 00:00:00 2001
From: Ondrej Wisniewski <ondrej.wisniewski@gmail.com>
Date: Fri, 6 Nov 2015 15:01:28 +0100
Subject: [PATCH 109/170] dts: Added overlay for Adafruit PiTFT 2.8" capacitive
 touch screen

---
 arch/arm/boot/dts/overlays/Makefile                |  1 +
 arch/arm/boot/dts/overlays/README                  | 22 ++++++
 .../dts/overlays/pitft28-capacitive-overlay.dts    | 88 ++++++++++++++++++++++
 3 files changed, 111 insertions(+)
 create mode 100644 arch/arm/boot/dts/overlays/pitft28-capacitive-overlay.dts

--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -36,6 +36,7 @@ dtb-$(RPI_DT_OVERLAYS) += mmc-overlay.dt
 dtb-$(RPI_DT_OVERLAYS) += mz61581-overlay.dtb
 dtb-$(RPI_DT_OVERLAYS) += piscreen-overlay.dtb
 dtb-$(RPI_DT_OVERLAYS) += piscreen2r-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += pitft28-capacitive-overlay.dtb
 dtb-$(RPI_DT_OVERLAYS) += pitft28-resistive-overlay.dtb
 dtb-$(RPI_DT_OVERLAYS) += pps-gpio-overlay.dtb
 dtb-$(RPI_DT_OVERLAYS) += pwm-overlay.dtb
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -439,6 +439,28 @@ Params: speed                    Display
         xohms                    Touchpanel sensitivity (X-plate resistance)
 
 
+Name:   pitft28-capacitive
+Info:   Adafruit PiTFT 2.8" capacitive touch screen
+Load:   dtoverlay=pitft28-capacitive,<param>=<val>
+Params: speed                    Display SPI bus speed
+
+        rotate                   Display rotation {0,90,180,270}
+
+        fps                      Delay between frame updates
+
+        debug                    Debug output level {0-7}
+
+        touch-sizex              Touchscreen size x (default 240)
+
+        touch-sizey              Touchscreen size y (default 320)
+
+        touch-invx               Touchscreen inverted x axis
+
+        touch-invy               Touchscreen inverted y axis
+
+        touch-swapxy             Touchscreen swapped x y axis
+
+
 Name:   pitft28-resistive
 Info:   Adafruit PiTFT 2.8" resistive touch screen
 Load:   dtoverlay=pitft28-resistive,<param>=<val>
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pitft28-capacitive-overlay.dts
@@ -0,0 +1,88 @@
+/*
+ * Device Tree overlay for Adafruit PiTFT 2.8" capacitive touch screen
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+        compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+        fragment@0 {
+                target = <&spi0>;
+                __overlay__ {
+                        status = "okay";
+
+                        spidev@0{
+                                status = "disabled";
+                        };
+                };
+        };
+
+        fragment@1 {
+                target = <&gpio>;
+                __overlay__ {
+                        pitft_pins: pitft_pins {
+                                brcm,pins = <24 25>;
+                                brcm,function = <0 1>; /* in out */
+                                brcm,pull = <2 0>; /* pullup none */
+                        };
+                };
+        };
+
+        fragment@2 {
+                target = <&spi0>;
+                __overlay__ {
+                        /* needed to avoid dtc warning */
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        pitft: pitft@0{
+                                compatible = "ilitek,ili9340";
+                                reg = <0>;
+                                pinctrl-names = "default";
+                                pinctrl-0 = <&pitft_pins>;
+
+                                spi-max-frequency = <32000000>;
+                                rotate = <90>;
+                                fps = <25>;
+                                bgr;
+                                buswidth = <8>;
+                                dc-gpios = <&gpio 25 0>;
+                                debug = <0>;
+                        };
+                };
+        };
+
+        fragment@3 {
+                target = <&i2c1>;
+                __overlay__ {
+                        /* needed to avoid dtc warning */
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        ft6236: ft6236@38 {
+                                compatible = "focaltech,ft6236";
+                                reg = <0x38>;
+
+                                interrupt-parent = <&gpio>;
+                                interrupts = <24 2>;
+                                touchscreen-size-x = <240>;
+                                touchscreen-size-y = <320>;
+                        };
+                };
+        };
+
+        __overrides__ {
+                speed =   <&pitft>,"spi-max-frequency:0";
+                rotate =  <&pitft>,"rotate:0";
+                fps =     <&pitft>,"fps:0";
+                debug =   <&pitft>,"debug:0";
+                touch-sizex = <&ft6236>,"touchscreen-size-x?";
+                touch-sizey = <&ft6236>,"touchscreen-size-y?";
+                touch-invx  = <&ft6236>,"touchscreen-inverted-x?";
+                touch-invy  = <&ft6236>,"touchscreen-inverted-y?";
+                touch-swapxy = <&ft6236>,"touchscreen-swapped-x-y?";
+        };
+};