target/linux/bcm27xx/patches-5.4/950-0601-dtoverlays-Add-Pi4-version-of-vc4-kms-v3d.patch

   1 From 7f9f7a113e9c5d6efd997de7de93af31ec286174 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Fri, 20 Sep 2019 17:20:01 +0100
   4 Subject: [PATCH] dtoverlays: Add Pi4 version of vc4-kms-v3d
   5
   6 The Pi4 version of the KMS drivers is a work in progress, some
   7 blocks need alternate configuration, and some blocks currently
   8 need to remain disabled (eg the VEC).
   9
  10 Add a new overlay (vc4-kms-v3d-pi4) that loads the parts of
  11 vc4-kms that do work on Pi4.
  12 This has been tested with DPI and HDMI (not 100% reliable on mode
  13 switching)
  14
  15 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  16 ---
  17  arch/arm/boot/dts/overlays/Makefile           |   1 +
  18  arch/arm/boot/dts/overlays/README             |  14 ++
  19  .../dts/overlays/vc4-kms-v3d-pi4-overlay.dts  | 183 ++++++++++++++++++
  20  3 files changed, 198 insertions(+)
  21  create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
  22
  23 --- a/arch/arm/boot/dts/overlays/Makefile
  24 +++ b/arch/arm/boot/dts/overlays/Makefile
  25 @@ -191,6 +191,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  26         vc4-fkms-v3d.dtbo \
  27         vc4-kms-kippah-7inch.dtbo \
  28         vc4-kms-v3d.dtbo \
  29 +       vc4-kms-v3d-pi4.dtbo \
  30         vga666.dtbo \
  31         w1-gpio.dtbo \
  32         w1-gpio-pullup.dtbo \
  33 --- a/arch/arm/boot/dts/overlays/README
  34 +++ b/arch/arm/boot/dts/overlays/README
  35 @@ -2684,6 +2684,20 @@ Params: cma-256                 CMA is 2
  36          audio                   Enable or disable audio over HDMI (default "on")
  37
  38
  39 +Name:   vc4-kms-v3d-pi4
  40 +Info:   Enable Eric Anholt's DRM VC4 HDMI/HVS/V3D driver for Pi4.
  41 +Load:   dtoverlay=vc4-kms-v3d-pi4,<param>
  42 +Params: cma-256                 CMA is 256MB
  43 +        cma-192                 CMA is 192MB
  44 +        cma-128                 CMA is 128MB
  45 +        cma-96                  CMA is 96MB
  46 +        cma-64                  CMA is 64MB
  47 +        audio                   Enable or disable audio over HDMI0 (default
  48 +                                "on")
  49 +        audio1                  Enable or disable audio over HDMI1 (default
  50 +                                "on")
  51 +
  52 +
  53  Name:   vga666
  54  Info:   Overlay for the Fen Logic VGA666 board
  55          This uses GPIOs 2-21 (so no I2C), and activates the output 2-3 seconds
  56 --- /dev/null
  57 +++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
  58 @@ -0,0 +1,183 @@
  59 +/*
  60 + * vc4-kms-v3d-pi4-overlay.dts
  61 + */
  62 +
  63 +/dts-v1/;
  64 +/plugin/;
  65 +
  66 +#include <dt-bindings/clock/bcm2835.h>
  67 +
  68 +/ {
  69 +       compatible = "brcm,bcm2835";
  70 +
  71 +       fragment@0 {
  72 +               target-path = "/chosen";
  73 +               __overlay__ {
  74 +                       bootargs = "cma=256M";
  75 +               };
  76 +       };
  77 +
  78 +       fragment@1 {
  79 +               target-path = "/chosen";
  80 +               __dormant__ {
  81 +                       bootargs = "cma=192M";
  82 +               };
  83 +       };
  84 +
  85 +       fragment@2 {
  86 +               target-path = "/chosen";
  87 +               __dormant__ {
  88 +                       bootargs = "cma=128M";
  89 +               };
  90 +       };
  91 +
  92 +       fragment@3 {
  93 +               target-path = "/chosen";
  94 +               __dormant__ {
  95 +                       bootargs = "cma=96M";
  96 +               };
  97 +       };
  98 +
  99 +       fragment@4 {
 100 +               target-path = "/chosen";
 101 +               __dormant__ {
 102 +                       bootargs = "cma=64M";
 103 +               };
 104 +       };
 105 +
 106 +       fragment@5 {
 107 +               target = <&ddc0>;
 108 +               __overlay__  {
 109 +                       status = "okay";
 110 +               };
 111 +       };
 112 +
 113 +       fragment@6 {
 114 +               target = <&ddc1>;
 115 +               __overlay__  {
 116 +                       status = "okay";
 117 +               };
 118 +       };
 119 +
 120 +       fragment@7 {
 121 +               target = <&hdmi0>;
 122 +               __overlay__  {
 123 +                       status = "okay";
 124 +               };
 125 +       };
 126 +
 127 +       fragment@8 {
 128 +               target = <&hdmi1>;
 129 +               __overlay__  {
 130 +                       status = "okay";
 131 +               };
 132 +       };
 133 +
 134 +       fragment@9 {
 135 +               target = <&hvs>;
 136 +               __overlay__  {
 137 +                       status = "okay";
 138 +               };
 139 +       };
 140 +
 141 +       fragment@10 {
 142 +               target = <&pixelvalve0>;
 143 +               __overlay__  {
 144 +                       status = "okay";
 145 +               };
 146 +       };
 147 +
 148 +       fragment@11 {
 149 +               target = <&pixelvalve1>;
 150 +               __overlay__  {
 151 +                       status = "okay";
 152 +               };
 153 +       };
 154 +
 155 +       fragment@12 {
 156 +               target = <&pixelvalve2>;
 157 +               __overlay__  {
 158 +                       status = "okay";
 159 +               };
 160 +       };
 161 +
 162 +       fragment@13 {
 163 +               target = <&pixelvalve3>;
 164 +               __overlay__  {
 165 +                       status = "okay";
 166 +               };
 167 +       };
 168 +
 169 +       fragment@14 {
 170 +               target = <&pixelvalve4>;
 171 +               __overlay__  {
 172 +                       status = "okay";
 173 +               };
 174 +       };
 175 +
 176 +       fragment@15 {
 177 +               target = <&v3d>;
 178 +               __overlay__  {
 179 +                       status = "okay";
 180 +               };
 181 +       };
 182 +
 183 +       fragment@16 {
 184 +               target = <&vc4>;
 185 +               __overlay__  {
 186 +                       status = "okay";
 187 +               };
 188 +       };
 189 +
 190 +       fragment@17 {
 191 +               target = <&txp>;
 192 +               __overlay__  {
 193 +                       status = "okay";
 194 +               };
 195 +       };
 196 +
 197 +       fragment@18 {
 198 +               target = <&fb>;
 199 +               __overlay__  {
 200 +                       status = "disabled";
 201 +               };
 202 +       };
 203 +
 204 +       fragment@19 {
 205 +               target = <&firmwarekms>;
 206 +               __overlay__  {
 207 +                       status = "disabled";
 208 +               };
 209 +       };
 210 +
 211 +       fragment@20 {
 212 +               target = <&vec>;
 213 +               __overlay__  {
 214 +                       status = "disabled";
 215 +               };
 216 +       };
 217 +
 218 +       fragment@21 {
 219 +               target = <&hdmi0>;
 220 +               __dormant__  {
 221 +                       dmas;
 222 +               };
 223 +       };
 224 +
 225 +       fragment@22 {
 226 +               target = <&hdmi1>;
 227 +               __dormant__  {
 228 +                       dmas;
 229 +               };
 230 +       };
 231 +
 232 +       __overrides__ {
 233 +               cma-256 = <0>,"+0-1-2-3-4";
 234 +               cma-192 = <0>,"-0+1-2-3-4";
 235 +               cma-128 = <0>,"-0-1+2-3-4";
 236 +               cma-96  = <0>,"-0-1-2+3-4";
 237 +               cma-64  = <0>,"-0-1-2-3+4";
 238 +               audio   = <0>,"!21";
 239 +               audio1   = <0>,"!22";
 240 +       };
 241 +};