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
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).
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
15 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
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
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) += \
27 vc4-kms-kippah-7inch.dtbo \
29 + vc4-kms-v3d-pi4.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")
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
47 + audio Enable or disable audio over HDMI0 (default
49 + audio1 Enable or disable audio over HDMI1 (default
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
57 +++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
60 + * vc4-kms-v3d-pi4-overlay.dts
66 +#include <dt-bindings/clock/bcm2835.h>
69 + compatible = "brcm,bcm2835";
72 + target-path = "/chosen";
74 + bootargs = "cma=256M";
79 + target-path = "/chosen";
81 + bootargs = "cma=192M";
86 + target-path = "/chosen";
88 + bootargs = "cma=128M";
93 + target-path = "/chosen";
95 + bootargs = "cma=96M";
100 + target-path = "/chosen";
102 + bootargs = "cma=64M";
142 + target = <&pixelvalve0>;
149 + target = <&pixelvalve1>;
156 + target = <&pixelvalve2>;
163 + target = <&pixelvalve3>;
170 + target = <&pixelvalve4>;
200 + status = "disabled";
205 + target = <&firmwarekms>;
207 + status = "disabled";
214 + status = "disabled";
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";
239 + audio1 = <0>,"!22";