target/linux/bcm27xx/patches-5.4/950-0511-dtoverlays-Add-overlay-to-enable-the-HEVC-V4L2-drive.patch

   1 From b1d6499e00b6061ecc7061335199acf86f54d31a Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Fri, 13 Mar 2020 16:52:55 +0000
   4 Subject: [PATCH] dtoverlays: Add overlay to enable the HEVC V4L2
   5  driver
   6
   7 This replaces the rpivid_mem register mapping driver.
   8 When the driver is complete, these DT changes should be
   9 merged into the base DT instead of being an overlay.
  10
  11 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  12 ---
  13  arch/arm/boot/dts/overlays/Makefile           |  1 +
  14  arch/arm/boot/dts/overlays/README             |  7 +++
  15  .../boot/dts/overlays/rpivid-v4l2-overlay.dts | 55 +++++++++++++++++++
  16  4 files changed, 63 insertions(+), 2 deletions(-)
  17  create mode 100644 arch/arm/boot/dts/overlays/rpivid-v4l2-overlay.dts
  18
  19 --- a/arch/arm/boot/dts/overlays/Makefile
  20 +++ b/arch/arm/boot/dts/overlays/Makefile
  21 @@ -140,6 +140,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  22         rpi-proto.dtbo \
  23         rpi-sense.dtbo \
  24         rpi-tv.dtbo \
  25 +       rpivid-v4l2.dtbo \
  26         rra-digidac1-wm8741-audio.dtbo \
  27         sc16is750-i2c.dtbo \
  28         sc16is752-i2c.dtbo \
  29 --- a/arch/arm/boot/dts/overlays/README
  30 +++ b/arch/arm/boot/dts/overlays/README
  31 @@ -2064,6 +2064,13 @@ Load:   dtoverlay=rpi-tv
  32  Params: <None>
  33
  34
  35 +Name:   rpivid-v4l2
  36 +Info:   Load the V4L2 stateless video decoder driver for the HEVC block,
  37 +        disabling the memory mapped devices in the process.
  38 +Load:   dtoverlay=rpivid-v4l2
  39 +Params: <None>
  40 +
  41 +
  42  Name:   rra-digidac1-wm8741-audio
  43  Info:   Configures the Red Rocks Audio DigiDAC1 soundcard
  44  Load:   dtoverlay=rra-digidac1-wm8741-audio
  45 --- /dev/null
  46 +++ b/arch/arm/boot/dts/overlays/rpivid-v4l2-overlay.dts
  47 @@ -0,0 +1,55 @@
  48 +// SPDX-License-Identifier: GPL-2.0-only
  49 +// Definitions for Raspberry Pi video decode engine
  50 +/dts-v1/;
  51 +/plugin/;
  52 +
  53 +#include <dt-bindings/interrupt-controller/arm-gic.h>
  54 +
  55 +/{
  56 +       compatible = "brcm,bcm2711";
  57 +
  58 +       fragment@0 {
  59 +               target = <&scb>;
  60 +               __overlay__ {
  61 +                       /* needed to avoid dtc warning */
  62 +                       #address-cells = <2>;
  63 +                       #size-cells = <1>;
  64 +                       codec@7eb10000 {
  65 +                               compatible = "raspberrypi,rpivid-vid-decoder";
  66 +                               reg = <0x0 0x7eb10000 0x1000>,  /* INTC */
  67 +                                     <0x0 0x7eb00000 0x10000>; /* HEVC */
  68 +                               reg-names = "intc",
  69 +                                           "hevc";
  70 +
  71 +                               interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
  72 +
  73 +                               clocks = <&hevc_clk>;
  74 +                               clock-names = "hevc";
  75 +
  76 +                               hevc_clk: hevc_clk {
  77 +                                       compatible = "fixed-clock";
  78 +                                       #clock-cells = <0>;
  79 +                                       clock-frequency = <500000000>;
  80 +                               };
  81 +                       };
  82 +               };
  83 +       };
  84 +
  85 +       fragment@1 {
  86 +               target = <&scb>;
  87 +               __overlay__ {
  88 +                       hevc-decoder@7eb00000 {
  89 +                               status = "disabled";
  90 +                       };
  91 +                       rpivid-local-intc@7eb10000 {
  92 +                               status = "disabled";
  93 +                       };
  94 +                       h264-decoder@7eb20000 {
  95 +                               status = "disabled";
  96 +                       };
  97 +                       vp9-decoder@7eb30000 {
  98 +                               status = "disabled";
  99 +                       };
 100 +               };
 101 +       };
 102 +};