target/linux/bcm27xx/patches-6.1/950-0512-overlays-Add-crystalfontz-cfa050_pi_m.patch

   1 From 86356a59b7688f8080aab516f1723f2ffbf15090 Mon Sep 17 00:00:00 2001
   2 From: Mark Williams <mwp@mwp.id.au>
   3 Date: Thu, 8 Dec 2022 04:58:05 -0700
   4 Subject: [PATCH] overlays: Add crystalfontz-cfa050_pi_m
   5
   6 Add support for the Crystalfontz CFA050-PI-M series of Raspberry Pi
   7 CM4-based modules using the CFAF7201280A0_050Tx TFT LCD displays.
   8
   9 Signed-off-by: Mark Williams <mwp@mwp.id.au>
  10 ---
  11  arch/arm/boot/dts/overlays/Makefile           |   1 +
  12  arch/arm/boot/dts/overlays/README             |   9 ++
  13  .../crystalfontz-cfa050_pi_m-overlay.dts      | 124 ++++++++++++++++++
  14  3 files changed, 134 insertions(+)
  15  create mode 100644 arch/arm/boot/dts/overlays/crystalfontz-cfa050_pi_m-overlay.dts
  16
  17 --- a/arch/arm/boot/dts/overlays/Makefile
  18 +++ b/arch/arm/boot/dts/overlays/Makefile
  19 @@ -40,6 +40,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  20         chipdip-dac.dtbo \
  21         cirrus-wm5102.dtbo \
  22         cma.dtbo \
  23 +       crystalfontz-cfa050_pi_m.dtbo \
  24         cutiepi-panel.dtbo \
  25         dacberry400.dtbo \
  26         dht11.dtbo \
  27 --- a/arch/arm/boot/dts/overlays/README
  28 +++ b/arch/arm/boot/dts/overlays/README
  29 @@ -804,6 +804,15 @@ Params: cma-512                 CMA is 5
  30          cma-default             Use upstream's default value
  31
  32
  33 +Name:   crystalfontz-cfa050_pi_m
  34 +Info:   Configures the Crystalfontz CFA050-PI-M series of Raspberry Pi CM4
  35 +        based modules using the CFA7201280A0_050Tx 7" TFT LCD displays,
  36 +        with or without capacitive touch screen.
  37 +        Requires use of vc4-kms-v3d.
  38 +Load:   dtoverlay=crystalfontz-cfa050_pi_m,<param>=<val>
  39 +Params: captouch                Enable capacitive touch display
  40 +
  41 +
  42  Name:   cutiepi-panel
  43  Info:   8" TFT LCD display and touch panel used by cutiepi.io
  44  Load:   dtoverlay=cutiepi-panel
  45 --- /dev/null
  46 +++ b/arch/arm/boot/dts/overlays/crystalfontz-cfa050_pi_m-overlay.dts
  47 @@ -0,0 +1,124 @@
  48 +/*
  49 + * crystalfontz-cfa050_pi_m-overlay.dts
  50 + * Configures the Crystalfontz CFA050-PI-M series of modules
  51 + * using CFAF7201280A0-050TC/TN panels with RaspberryPi CM4 DSI1
  52 + */
  53 +/dts-v1/;
  54 +/plugin/;
  55 +/{
  56 +// RaspberryPi CM4
  57 +       compatible = "brcm,bcm2835";
  58 +// PCF8574 I2C GPIO EXPANDER
  59 +       fragment@0 {
  60 +               target = <&i2c_csi_dsi>;
  61 +               __overlay__ {
  62 +                       #address-cells = <1>;
  63 +                       #size-cells = <0>;
  64 +                       status = "okay";
  65 +                       pcf8574a: pcf8574a@38 {
  66 +                               reg = <0x38>;
  67 +                               compatible = "nxp,pcf8574";
  68 +                               gpio-controller;
  69 +                               #gpio-cells = <2>;
  70 +                               ngpios = <8>;
  71 +                               gpio-line-names = "TFT_RESET", "TOUCH_RESET", "EXT_P2", "EXT_P3",
  72 +                                       "EXT_P4", "EXT_P5", "EXT_P6", "EXT_P7";
  73 +                       };
  74 +               };
  75 +       };
  76 +// LM3630a BACKLIGHT LED CONTROLLER
  77 +       fragment@1 {
  78 +               target = <&i2c_csi_dsi>;
  79 +               __overlay__ {
  80 +                       #address-cells = <1>;
  81 +                       #size-cells = <0>;
  82 +                       status = "okay";
  83 +                       lm3630a: backlight@36 {
  84 +                               reg = <0x36>;
  85 +                               compatible = "ti,lm3630a";
  86 +                               #address-cells = <1>;
  87 +                               #size-cells = <0>;
  88 +                               led@0 {
  89 +                                       reg = <0>;
  90 +                                       led-sources = <0 1>;
  91 +                                       label = "lcd-backlight";
  92 +                                       default-brightness = <128>;
  93 +                                       max-brightness = <255>;
  94 +                               };
  95 +                       };
  96 +               };
  97 +       };
  98 +// CFAF7201280A0_050Tx TFT DSI PANEL
  99 +       fragment@2 {
 100 +               target = <&dsi1>;
 101 +               __overlay__  {
 102 +                       #address-cells = <1>;
 103 +                       #size-cells = <0>;
 104 +                       status = "okay";
 105 +                       port {
 106 +                               dsi_out: endpoint {
 107 +                                       remote-endpoint = <&panel_in>;
 108 +                               };
 109 +                       };
 110 +                       dsi_panel: dsi_panel@0 {
 111 +                               compatible = "crystalfontz,cfaf7201280a0_050tx";
 112 +                               reg = <0>;
 113 +                               reset-gpios = <&pcf8574a 0 1>;
 114 +                               backlight = <&lm3630a>;
 115 +                               fps = <60>;
 116 +                               port {
 117 +                                       panel_in: endpoint {
 118 +                                               remote-endpoint = <&dsi_out>;
 119 +                                       };
 120 +                               };
 121 +                       };
 122 +               };
 123 +       };
 124 +// rPI GPIO INPUT FOR TOUCH IC IRQ
 125 +       fragment@3 {
 126 +               target = <&gpio>;
 127 +               __dormant__ {
 128 +                       gt928intpins: gt928intpins {
 129 +                               brcm,pins = <26>;
 130 +                               brcm,function = <0>;
 131 +                               brcm,pull = <1>;
 132 +                       };
 133 +               };
 134 +       };
 135 +// GT928 TOUCH CONTROLLER IC
 136 +       fragment@4 {
 137 +               target = <&i2c_csi_dsi>;
 138 +               __dormant__ {
 139 +                       #address-cells = <1>;
 140 +                       #size-cells = <0>;
 141 +                       status = "okay";
 142 +                       gt928@5d {
 143 +                               compatible = "goodix,gt928";
 144 +                               reg = <0x5d>;
 145 +                               interrupt-parent = <&gpio>;
 146 +                               interrupts = <26 2>;
 147 +                               irq-gpios = <&gpio 26 0>;
 148 +                               reset-gpios = <&pcf8574a 1 1>;
 149 +                               touchscreen-inverted-x;
 150 +                               touchscreen-inverted-y;
 151 +                       };
 152 +               };
 153 +       };
 154 +// PCF85063A RTC on I2C
 155 +       fragment@5 {
 156 +               target = <&i2c_csi_dsi>;
 157 +               __overlay__ {
 158 +                       #address-cells = <1>;
 159 +                       #size-cells = <0>;
 160 +                       status = "okay";
 161 +                       pcf85063a@51 {
 162 +                               compatible = "nxp,pcf85063a";
 163 +                               reg = <0x51>;
 164 +                       };
 165 +               };
 166 +       };
 167 +// CAPACITIVE TOUCH OPTION FOR TFT PANEL
 168 +       __overrides__ {
 169 +               captouch = <0>,"+3+4";
 170 +       };
 171 +};