bcm27xx: import latest patches from the RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0365-ARM-dts-bcm283x-Move-system-timer-back-to-bcm283x.dt.patch b/target/linux/bcm27xx/patches-5.4/950-0365-ARM-dts-bcm283x-Move-system-timer-back-to-bcm283x.dt.patch
new file mode 100644
index 0000000000..3ececc8f92
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0365-ARM-dts-bcm283x-Move-system-timer-back-to-bcm283x.dt.patch
@@ -0,0 +1,73 @@
+From fcd4bc412167d2a79bf63603e883f4960ca6b2a1 Mon Sep 17 00:00:00 2001
+From: Stefan Wahren <wahrenst@gmx.net>
+Date: Fri, 27 Dec 2019 11:15:00 +0100
+Subject: [PATCH] ARM: dts: bcm283x: Move system timer back to
+ bcm283x.dtsi
+
+During Raspberry Pi 4 upstream discussion Tim Gover confirmed that the
+system timer also exists on BCM2711. So move it back to bcm283x.dtsi and
+overwrite the interrupt definition in bcm2838.dtsi.
+
+Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
+---
+ arch/arm/boot/dts/bcm2835-common.dtsi | 11 -----------
+ arch/arm/boot/dts/bcm2838.dtsi        |  7 +++++++
+ arch/arm/boot/dts/bcm283x.dtsi        | 11 +++++++++++
+ 3 files changed, 18 insertions(+), 11 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm2835-common.dtsi
++++ b/arch/arm/boot/dts/bcm2835-common.dtsi
+@@ -6,17 +6,6 @@
+ 
+ / {
+ 	soc {
+-		timer@7e003000 {
+-			compatible = "brcm,bcm2835-system-timer";
+-			reg = <0x7e003000 0x1000>;
+-			interrupts = <1 0>, <1 1>, <1 2>, <1 3>;
+-			/* This could be a reference to BCM2835_CLOCK_TIMER,
+-			 * but we don't have the driver using the common clock
+-			 * support yet.
+-			 */
+-			clock-frequency = <1000000>;
+-		};
+-
+ 		intc: interrupt-controller@7e00b200 {
+ 			compatible = "brcm,bcm2835-armctrl-ic";
+ 			reg = <0x7e00b200 0x200>;
+--- a/arch/arm/boot/dts/bcm2838.dtsi
++++ b/arch/arm/boot/dts/bcm2838.dtsi
+@@ -711,6 +711,13 @@
+ 	interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
+ };
+ 
++&system_timer {
++	interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>,
++		     <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>,
++		     <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>,
++		     <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
++};
++
+ &uart0 {
+ 	interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
+ };
+--- a/arch/arm/boot/dts/bcm283x.dtsi
++++ b/arch/arm/boot/dts/bcm283x.dtsi
+@@ -56,6 +56,17 @@
+ 		#address-cells = <1>;
+ 		#size-cells = <1>;
+ 
++		system_timer: timer@7e003000 {
++			compatible = "brcm,bcm2835-system-timer";
++			reg = <0x7e003000 0x1000>;
++			interrupts = <1 0>, <1 1>, <1 2>, <1 3>;
++			/* This could be a reference to BCM2835_CLOCK_TIMER,
++			 * but we don't have the driver using the common clock
++			 * support yet.
++			 */
++			clock-frequency = <1000000>;
++		};
++
+ 		txp: txp@7e004000 {
+ 			compatible = "brcm,bcm2835-txp";
+ 			reg = <0x7e004000 0x20>;