git.openwrt.org Git - openwrt/staging/stintel.git/blob

   1 From 818fff9eed1c36f404f0556a0b239b43799a094b Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Tue, 10 Nov 2020 17:49:35 +0000
   4 Subject: [PATCH] Add devicetree support for RaspberryPi 7" panel over
   5  DSI I2C
   6
   7 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
   8 ---
   9  arch/arm/boot/dts/overlays/Makefile           |  1 +
  10  arch/arm/boot/dts/overlays/README             |  8 +++
  11  .../overlays/vc4-kms-dsi-7inch-overlay.dts    | 56 +++++++++++++++++++
  12  3 files changed, 65 insertions(+)
  13  create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts
  14
  15 --- a/arch/arm/boot/dts/overlays/Makefile
  16 +++ b/arch/arm/boot/dts/overlays/Makefile
  17 @@ -201,6 +201,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  18         upstream.dtbo \
  19         upstream-pi4.dtbo \
  20         vc4-fkms-v3d.dtbo \
  21 +       vc4-kms-dsi-7inch.dtbo \
  22         vc4-kms-kippah-7inch.dtbo \
  23         vc4-kms-v3d.dtbo \
  24         vc4-kms-v3d-pi4.dtbo \
  25 --- a/arch/arm/boot/dts/overlays/README
  26 +++ b/arch/arm/boot/dts/overlays/README
  27 @@ -2935,6 +2935,14 @@ Params: cma-512                 CMA is 5
  28          cma-default             Use upstream's default value
  29
  30
  31 +Name:   vc4-kms-dsi-7inch
  32 +Info:   Enable the Raspberry Pi DSI 7" screen.
  33 +        Use edt-ft5406 for the touchscreen element.
  34 +        Requires vc4-kms-v3d to be loaded.
  35 +Load:   dtoverlay=vc4-kms-dsi-7inch
  36 +Params: <None>
  37 +
  38 +
  39  Name:   vc4-kms-kippah-7inch
  40  Info:   Enable the Adafruit DPI Kippah with the 7" Ontat panel attached.
  41          Requires vc4-kms-v3d to be loaded.
  42 --- /dev/null
  43 +++ b/arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts
  44 @@ -0,0 +1,56 @@
  45 +/*
  46 + * Device Tree overlay for RaspberryPi 7" Touchscreen panel
  47 + *
  48 + */
  49 +
  50 +/dts-v1/;
  51 +/plugin/;
  52 +
  53 +/ {
  54 +       compatible = "brcm,bcm2835";
  55 +
  56 +       fragment@0 {
  57 +               target = <&dsi1>;
  58 +               __overlay__ {
  59 +                       #address-cells = <1>; size-cells = <0>;
  60 +                       status = "okay";
  61 +                       port {
  62 +                               dsi_out_port: endpoint {
  63 +                                       remote-endpoint = <&panel_dsi_port>;
  64 +                               };
  65 +                       };
  66 +               };
  67 +       };
  68 +
  69 +       fragment@1 {
  70 +               target = <&i2c_csi_dsi>;
  71 +               __overlay__ {
  72 +                       #address-cells = <1>;
  73 +                       #size-cells = <0>;
  74 +                       status = "okay";
  75 +                       lcd@45 {
  76 +                               compatible = "raspberrypi,7inch-touchscreen-panel";
  77 +                               reg = <0x45>;
  78 +                               port {
  79 +                                       panel_dsi_port: endpoint {
  80 +                                               remote-endpoint = <&dsi_out_port>;
  81 +                                       };
  82 +                               };
  83 +                       };
  84 +               };
  85 +       };
  86 +
  87 +       fragment@2 {
  88 +               target = <&i2c0if>;
  89 +               __overlay__ {
  90 +                       status = "okay";
  91 +               };
  92 +       };
  93 +
  94 +       fragment@3 {
  95 +               target = <&i2c0mux>;
  96 +               __overlay__ {
  97 +                       status = "okay";
  98 +               };
  99 +       };
 100 +};