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From f6d6731d8e896ab029466547dfa66d91a9a6b73a Mon Sep 17 00:00:00 2001
From: Hristo Venev <hristo@venev.name>
Date: Wed, 22 Apr 2020 16:34:59 +0300
Subject: [PATCH] dts: bcm2711: add "High Peripheral" mode overlay
The following addresses change:
- 0xfc00_0000 -> 0x4_7c00_0000
- 0xff80_0000 -> 0x4_c000_0000
The range 0xfc00_0000-0xffff_ffff becomes available as system RAM on
devices with >= 4 GiB of RAM. Firmware should initialize the memory node
appropriately.
Signed-off-by: Hristo Venev <hristo@venev.name>
---
arch/arm/boot/dts/bcm2711-rpi.dtsi | 2 +-
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 6 ++
.../boot/dts/overlays/highperi-overlay.dts | 64 +++++++++++++++++++
arch/arm/boot/dts/overlays/overlay_map.dts | 4 ++
5 files changed, 76 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/boot/dts/overlays/highperi-overlay.dts
--- a/arch/arm/boot/dts/bcm2711-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2711-rpi.dtsi
@@ -16,7 +16,7 @@
compatible = "arm,cortex-a72-pmu", "arm,cortex-a15-pmu";
};
- v3dbus {
+ v3dbus: v3dbus {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <2>;
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -64,6 +64,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
hifiberry-dacplushd.dtbo \
hifiberry-digi.dtbo \
hifiberry-digi-pro.dtbo \
+ highperi.dtbo \
hy28a.dtbo \
hy28b.dtbo \
hy28b-2017.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -1019,6 +1019,12 @@ Load: dtoverlay=hifiberry-digi-pro
Params: <None>
+Name: highperi
+Info: Enables "High Peripheral" mode
+Load: dtoverlay=highperi
+Params: <None>
+
+
Name: hy28a
Info: HY28A - 2.8" TFT LCD Display Module by HAOYU Electronics
Default values match Texy's display shield
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/highperi-overlay.dts
@@ -0,0 +1,64 @@
+/*
+ * highperi.dts
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2711";
+
+ fragment@0 {
+ target = <&soc>;
+ #address-cells = <2>;
+ #size-cells = <1>;
+
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x7c000000 0x4 0x7c000000 0x04000000>,
+ <0x40000000 0x4 0xc0000000 0x00800000>;
+ };
+ };
+
+ fragment@1 {
+ target = <&scb>;
+ #address-cells = <2>;
+ #size-cells = <1>;
+
+ __overlay__ {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges = <0x0 0x7c000000 0x4 0x7c000000 0x0 0x04000000>,
+ <0x0 0x40000000 0x4 0xc0000000 0x0 0x00800000>,
+ <0x6 0x00000000 0x6 0x00000000 0x0 0x40000000>,
+ <0x0 0x00000000 0x0 0x00000000 0x1 0x00000000>;
+ dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x2 0x00000000>;
+ };
+ };
+
+ fragment@2 {
+ target = <&v3dbus>;
+ #address-cells = <2>;
+ #size-cells = <1>;
+
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <2>;
+ ranges = <0x7c500000 0x4 0x7c500000 0x0 0x03300000>,
+ <0x40000000 0x4 0xc0000000 0x0 0x00800000>;
+ };
+ };
+
+ fragment@3 {
+ target = <&emmc2bus>;
+ #address-cells = <2>;
+ #size-cells = <1>;
+
+ __overlay__ {
+ #address-cells = <2>;
+ #size-cells = <1>;
+ ranges = <0x0 0x7e000000 0x4 0x7e000000 0x01800000>;
+ };
+ };
+};
--- a/arch/arm/boot/dts/overlays/overlay_map.dts
+++ b/arch/arm/boot/dts/overlays/overlay_map.dts
@@ -5,6 +5,10 @@
deprecated = "use i2c-sensor,bmp085";
};
+ highperi {
+ bcm2711;
+ };
+
i2c0-bcm2708 {
deprecated = "use i2c0";
};
|
