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