1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2014 Florian Vaussard, EPFL Mobots group
4 */
5
6 /*
7 * 4.3'' LCD panel output for some Gumstix Overo boards (Gallop43, Chestnut43)
8 */
9
10 &omap3_pmx_core {
11 dss_dpi_pins: dss-dpi-pins {
12 pinctrl-single,pins = <
13 OMAP3_CORE1_IOPAD(0x20d4, PIN_OUTPUT | MUX_MODE0) /* dss_pclk.dss_pclk */
14 OMAP3_CORE1_IOPAD(0x20d6, PIN_OUTPUT | MUX_MODE0) /* dss_hsync.dss_hsync */
15 OMAP3_CORE1_IOPAD(0x20d8, PIN_OUTPUT | MUX_MODE0) /* dss_vsync.dss_vsync */
16 OMAP3_CORE1_IOPAD(0x20da, PIN_OUTPUT | MUX_MODE0) /* dss_acbias.dss_acbias */
17 OMAP3_CORE1_IOPAD(0x20dc, PIN_OUTPUT | MUX_MODE0) /* dss_data0.dss_data0 */
18 OMAP3_CORE1_IOPAD(0x20de, PIN_OUTPUT | MUX_MODE0) /* dss_data1.dss_data1 */
19 OMAP3_CORE1_IOPAD(0x20e0, PIN_OUTPUT | MUX_MODE0) /* dss_data2.dss_data2 */
20 OMAP3_CORE1_IOPAD(0x20e2, PIN_OUTPUT | MUX_MODE0) /* dss_data3.dss_data3 */
21 OMAP3_CORE1_IOPAD(0x20e4, PIN_OUTPUT | MUX_MODE0) /* dss_data4.dss_data4 */
22 OMAP3_CORE1_IOPAD(0x20e6, PIN_OUTPUT | MUX_MODE0) /* dss_data5.dss_data5 */
23 OMAP3_CORE1_IOPAD(0x20e8, PIN_OUTPUT | MUX_MODE0) /* dss_data6.dss_data6 */
24 OMAP3_CORE1_IOPAD(0x20ea, PIN_OUTPUT | MUX_MODE0) /* dss_data7.dss_data7 */
25 OMAP3_CORE1_IOPAD(0x20ec, PIN_OUTPUT | MUX_MODE0) /* dss_data8.dss_data8 */
26 OMAP3_CORE1_IOPAD(0x20ee, PIN_OUTPUT | MUX_MODE0) /* dss_data9.dss_data9 */
27 OMAP3_CORE1_IOPAD(0x20f0, PIN_OUTPUT | MUX_MODE0) /* dss_data10.dss_data10 */
28 OMAP3_CORE1_IOPAD(0x20f2, PIN_OUTPUT | MUX_MODE0) /* dss_data11.dss_data11 */
29 OMAP3_CORE1_IOPAD(0x20f4, PIN_OUTPUT | MUX_MODE0) /* dss_data12.dss_data12 */
30 OMAP3_CORE1_IOPAD(0x20f6, PIN_OUTPUT | MUX_MODE0) /* dss_data13.dss_data13 */
31 OMAP3_CORE1_IOPAD(0x20f8, PIN_OUTPUT | MUX_MODE0) /* dss_data14.dss_data14 */
32 OMAP3_CORE1_IOPAD(0x20fa, PIN_OUTPUT | MUX_MODE0) /* dss_data15.dss_data15 */
33 OMAP3_CORE1_IOPAD(0x20fc, PIN_OUTPUT | MUX_MODE0) /* dss_data16.dss_data16 */
34 OMAP3_CORE1_IOPAD(0x20fe, PIN_OUTPUT | MUX_MODE0) /* dss_data17.dss_data17 */
35 OMAP3_CORE1_IOPAD(0x2100, PIN_OUTPUT | MUX_MODE0) /* dss_data18.dss_data18 */
36 OMAP3_CORE1_IOPAD(0x2102, PIN_OUTPUT | MUX_MODE0) /* dss_data19.dss_data19 */
37 OMAP3_CORE1_IOPAD(0x2104, PIN_OUTPUT | MUX_MODE0) /* dss_data20.dss_data20 */
38 OMAP3_CORE1_IOPAD(0x2106, PIN_OUTPUT | MUX_MODE0) /* dss_data21.dss_data21 */
39 OMAP3_CORE1_IOPAD(0x2108, PIN_OUTPUT | MUX_MODE0) /* dss_data22.dss_data22 */
40 OMAP3_CORE1_IOPAD(0x210a, PIN_OUTPUT | MUX_MODE0) /* dss_data23.dss_data23 */
41 >;
42 };
43
44 lte430_pins: lte430-pins {
45 pinctrl-single,pins = <
46 OMAP3_CORE1_IOPAD(0x2174, PIN_OUTPUT | MUX_MODE4) /* uart2_cts.gpio_144 */
47 >;
48 };
49
50 backlight_pins: backlight-pins {
51 pinctrl-single,pins = <
52 OMAP3_CORE1_IOPAD(0x2176, PIN_OUTPUT | MUX_MODE4) /* uart2_rts.gpio_145 */
53 >;
54 };
55
56 mcspi1_pins: mcspi1-pins {
57 pinctrl-single,pins = <
58 OMAP3_CORE1_IOPAD(0x21c8, PIN_INPUT | MUX_MODE0) /* mcspi1_clk.mcspi1_clk */
59 OMAP3_CORE1_IOPAD(0x21ca, PIN_INPUT | MUX_MODE0) /* mcspi1_simo.mcspi1_simo */
60 OMAP3_CORE1_IOPAD(0x21cc, PIN_INPUT | MUX_MODE0) /* mcspi1_somi.mcspi1_somi */
61 OMAP3_CORE1_IOPAD(0x21ce, PIN_INPUT | MUX_MODE0) /* mcspi1_cs0.mcspi1_cs0 */
62 >;
63 };
64
65 ads7846_pins: ads7846-pins {
66 pinctrl-single,pins = <
67 OMAP3_CORE1_IOPAD(0x2138, PIN_INPUT_PULLDOWN | MUX_MODE4) /* csi2_dx1.gpio_114 */
68 >;
69 };
70 };
71
72 /* Needed to power the DPI pins */
73 &vpll2 {
74 regulator-always-on;
75 };
76
77 &dss {
78 status = "okay";
79
80 pinctrl-names = "default";
81 pinctrl-0 = <&dss_dpi_pins>;
82
83 port {
84 dpi_out: endpoint {
85 remote-endpoint = <&lcd_in>;
86 data-lines = <24>;
87 };
88 };
89 };
90
91 / {
92 aliases {
93 display0 = &lcd0;
94 };
95
96 lcd0: display {
97 compatible = "samsung,lte430wq-f0c", "panel-dpi";
98 label = "lcd43";
99
100 pinctrl-names = "default";
101 pinctrl-0 = <<e430_pins>;
102 enable-gpios = <&gpio5 16 GPIO_ACTIVE_HIGH>; /* gpio_144 */
103
104 port {
105 lcd_in: endpoint {
106 remote-endpoint = <&dpi_out>;
107 };
108 };
109
110 panel-timing {
111 clock-frequency = <9200000>;
112 hactive = <480>;
113 vactive = <272>;
114 hfront-porch = <8>;
115 hback-porch = <4>;
116 hsync-len = <41>;
117 vback-porch = <2>;
118 vfront-porch = <4>;
119 vsync-len = <10>;
120
121 hsync-active = <0>;
122 vsync-active = <0>;
123 de-active = <1>;
124 pixelclk-active = <1>;
125 };
126 };
127
128 ads7846reg: ads7846-reg {
129 compatible = "regulator-fixed";
130 regulator-name = "ads7846-reg";
131 regulator-min-microvolt = <3300000>;
132 regulator-max-microvolt = <3300000>;
133 };
134
135 backlight {
136 compatible = "gpio-backlight";
137
138 pinctrl-names = "default";
139 pinctrl-0 = <&backlight_pins>;
140 gpios = <&gpio5 17 GPIO_ACTIVE_HIGH>; /* gpio_145 */
141
142 default-on;
143 };
144 };
145
146 &mcspi1 {
147 pinctrl-names = "default";
148 pinctrl-0 = <&mcspi1_pins>;
149
150 /* touch controller */
151 ads7846@0 {
152 pinctrl-names = "default";
153 pinctrl-0 = <&ads7846_pins>;
154
155 compatible = "ti,ads7846";
156 vcc-supply = <&ads7846reg>;
157
158 reg = <0>; /* CS0 */
159 spi-max-frequency = <1500000>;
160
161 interrupt-parent = <&gpio4>;
162 interrupts = <18 0>; /* gpio_114 */
163 pendown-gpio = <&gpio4 18 GPIO_ACTIVE_LOW>;
164
165 ti,x-min = /bits/ 16 <0x0>;
166 ti,x-max = /bits/ 16 <0x0fff>;
167 ti,y-min = /bits/ 16 <0x0>;
168 ti,y-max = /bits/ 16 <0x0fff>;
169 ti,x-plate-ohms = /bits/ 16 <180>;
170 ti,pressure-max = /bits/ 16 <255>;
171
172 wakeup-source;
173 };
174 };
175
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.