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242 lines
4.7 KiB
Diff
242 lines
4.7 KiB
Diff
From 7f9f7a113e9c5d6efd997de7de93af31ec286174 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.org>
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Date: Fri, 20 Sep 2019 17:20:01 +0100
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Subject: [PATCH] dtoverlays: Add Pi4 version of vc4-kms-v3d
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The Pi4 version of the KMS drivers is a work in progress, some
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blocks need alternate configuration, and some blocks currently
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need to remain disabled (eg the VEC).
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Add a new overlay (vc4-kms-v3d-pi4) that loads the parts of
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vc4-kms that do work on Pi4.
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This has been tested with DPI and HDMI (not 100% reliable on mode
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switching)
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/README | 14 ++
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.../dts/overlays/vc4-kms-v3d-pi4-overlay.dts | 183 ++++++++++++++++++
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3 files changed, 198 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -191,6 +191,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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vc4-fkms-v3d.dtbo \
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vc4-kms-kippah-7inch.dtbo \
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vc4-kms-v3d.dtbo \
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+ vc4-kms-v3d-pi4.dtbo \
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vga666.dtbo \
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w1-gpio.dtbo \
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w1-gpio-pullup.dtbo \
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -2684,6 +2684,20 @@ Params: cma-256 CMA is 2
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audio Enable or disable audio over HDMI (default "on")
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+Name: vc4-kms-v3d-pi4
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+Info: Enable Eric Anholt's DRM VC4 HDMI/HVS/V3D driver for Pi4.
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+Load: dtoverlay=vc4-kms-v3d-pi4,<param>
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+Params: cma-256 CMA is 256MB
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+ cma-192 CMA is 192MB
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+ cma-128 CMA is 128MB
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+ cma-96 CMA is 96MB
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+ cma-64 CMA is 64MB
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+ audio Enable or disable audio over HDMI0 (default
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+ "on")
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+ audio1 Enable or disable audio over HDMI1 (default
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+ "on")
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+
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+
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Name: vga666
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Info: Overlay for the Fen Logic VGA666 board
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This uses GPIOs 2-21 (so no I2C), and activates the output 2-3 seconds
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
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@@ -0,0 +1,183 @@
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+/*
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+ * vc4-kms-v3d-pi4-overlay.dts
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+ */
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+
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+/dts-v1/;
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+/plugin/;
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+
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+#include <dt-bindings/clock/bcm2835.h>
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+
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+/ {
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+ compatible = "brcm,bcm2835";
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+
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+ fragment@0 {
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+ target-path = "/chosen";
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+ __overlay__ {
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+ bootargs = "cma=256M";
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+ };
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+ };
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+
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+ fragment@1 {
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+ target-path = "/chosen";
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+ __dormant__ {
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+ bootargs = "cma=192M";
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+ };
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+ };
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+
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+ fragment@2 {
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+ target-path = "/chosen";
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+ __dormant__ {
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+ bootargs = "cma=128M";
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+ };
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+ };
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+
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+ fragment@3 {
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+ target-path = "/chosen";
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+ __dormant__ {
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+ bootargs = "cma=96M";
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+ };
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+ };
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+
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+ fragment@4 {
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+ target-path = "/chosen";
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+ __dormant__ {
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+ bootargs = "cma=64M";
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+ };
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+ };
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+
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+ fragment@5 {
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+ target = <&ddc0>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@6 {
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+ target = <&ddc1>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@7 {
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+ target = <&hdmi0>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@8 {
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+ target = <&hdmi1>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@9 {
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+ target = <&hvs>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@10 {
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+ target = <&pixelvalve0>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@11 {
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+ target = <&pixelvalve1>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@12 {
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+ target = <&pixelvalve2>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@13 {
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+ target = <&pixelvalve3>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@14 {
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+ target = <&pixelvalve4>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@15 {
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+ target = <&v3d>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@16 {
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+ target = <&vc4>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@17 {
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+ target = <&txp>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@18 {
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+ target = <&fb>;
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+ __overlay__ {
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+ status = "disabled";
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+ };
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+ };
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+
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+ fragment@19 {
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+ target = <&firmwarekms>;
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+ __overlay__ {
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+ status = "disabled";
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+ };
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+ };
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+
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+ fragment@20 {
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+ target = <&vec>;
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+ __overlay__ {
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+ status = "disabled";
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+ };
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+ };
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+
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+ fragment@21 {
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+ target = <&hdmi0>;
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+ __dormant__ {
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+ dmas;
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+ };
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+ };
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+
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+ fragment@22 {
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+ target = <&hdmi1>;
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+ __dormant__ {
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+ dmas;
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+ };
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+ };
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+
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+ __overrides__ {
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+ cma-256 = <0>,"+0-1-2-3-4";
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+ cma-192 = <0>,"-0+1-2-3-4";
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+ cma-128 = <0>,"-0-1+2-3-4";
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+ cma-96 = <0>,"-0-1-2+3-4";
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+ cma-64 = <0>,"-0-1-2-3+4";
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+ audio = <0>,"!21";
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+ audio1 = <0>,"!22";
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+ };
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+};
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