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>
(cherry-picked from commit f07e572f64)

1 files changed, 326 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0710-overlays-Move-fixed-clock-nodes-to-the-root.patch b/target/linux/bcm27xx/patches-5.4/950-0710-overlays-Move-fixed-clock-nodes-to-the-root.patch
new file mode 100644
index 0000000000..aa19ca11d5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0710-overlays-Move-fixed-clock-nodes-to-the-root.patch
@@ -0,0 +1,326 @@
+From 805e008c18ec09c4115e4cec413642028cd9a8e2 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 11 May 2020 15:12:21 +0100
+Subject: [PATCH] overlays: Move "fixed-clock" nodes to the root
+
+Apart from some special cases, device objects are only created for
+nodes if they are children of a bus or the root node. "fixed-clock"
+is one of the exceptions that will be instantiated wherever it is
+found, but only during kernel initialisation - ruling out loading the
+overlay at runtime.
+
+Move most of the affected clocks to be children of the root, only
+leaving those in overlays that could be multiply instantiated, to avoid
+a potential name clash.
+
+See: https://github.com/raspberrypi/linux/issues/3602
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ .../dts/overlays/audiosense-pi-overlay.dts    | 14 ++++++-------
+ arch/arm/boot/dts/overlays/draws-overlay.dts  | 12 +++++------
+ .../boot/dts/overlays/fe-pi-audio-overlay.dts |  2 +-
+ arch/arm/boot/dts/overlays/imx219-overlay.dts | 12 +++++------
+ .../arm/boot/dts/overlays/irs1125-overlay.dts | 17 +++++++++------
+ .../dts/overlays/mcp2515-can0-overlay.dts     |  2 +-
+ .../dts/overlays/mcp2515-can1-overlay.dts     |  2 +-
+ .../boot/dts/overlays/midi-uart0-overlay.dts  |  2 +-
+ arch/arm/boot/dts/overlays/ov5647-overlay.dts | 17 +++++++++------
+ .../boot/dts/overlays/rpivid-v4l2-overlay.dts | 17 +++++++++------
+ .../dts/overlays/sc16is752-spi1-overlay.dts   | 21 ++++++++++++-------
+ .../boot/dts/overlays/tc358743-overlay.dts    | 17 +++++++++------
+ 12 files changed, 80 insertions(+), 55 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/audiosense-pi-overlay.dts
++++ b/arch/arm/boot/dts/overlays/audiosense-pi-overlay.dts
+@@ -24,6 +24,13 @@
+ 				regulator-max-microvolt = <1800000>;
+ 				regulator-always-on;
+ 			};
++
++			/* audio external oscillator */
++			codec_osc: codec_osc {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <12000000>;	/* 12 MHz */
++			};
+ 		};
+ 	};
+ 
+@@ -44,13 +51,6 @@
+ 			#size-cells = <0>;
+ 			status = "okay";
+ 
+-			/* audio external oscillator */
+-			codec_osc: codec_osc {
+-				compatible = "fixed-clock";
+-				#clock-cells = <0>;
+-				clock-frequency = <12000000>;	/* 12 MHz */
+-			};
+-
+ 			codec: tlv320aic32x4@18 {
+ 				#sound-dai-cells = <0>;
+ 				compatible = "ti,tlv320aic32x4";
+--- a/arch/arm/boot/dts/overlays/draws-overlay.dts
++++ b/arch/arm/boot/dts/overlays/draws-overlay.dts
+@@ -30,6 +30,12 @@
+                     regulator-max-microvolt = <3300000>;
+                     regulator-always-on;
+                 };
++
++                sc16is752_clk: sc16is752_draws_clk {
++                    compatible = "fixed-clock";
++                    #clock-cells = <0>;
++                    clock-frequency = <1843200>;
++                };
+             };
+ 
+             pps: pps {
+@@ -78,12 +84,6 @@
+ 
+                 pinctrl-names = "default";
+                 pinctrl-0 = <&sc16is752_irq>;
+-
+-                sc16is752_clk: sc16is752_clk {
+-                    compatible = "fixed-clock";
+-                    #clock-cells = <0>;
+-                    clock-frequency = <1843200>;
+-                };
+             };
+ 
+             tla2024: tla2024@48 {
+--- a/arch/arm/boot/dts/overlays/fe-pi-audio-overlay.dts
++++ b/arch/arm/boot/dts/overlays/fe-pi-audio-overlay.dts
+@@ -6,7 +6,7 @@
+ 	compatible = "brcm,bcm2835";
+ 
+ 	fragment@0 {
+-		target = <&clocks>;
++		target-path = "/";
+ 		__overlay__ {
+ 			sgtl5000_mclk: sgtl5000_mclk {
+ 				compatible = "fixed-clock";
+--- a/arch/arm/boot/dts/overlays/imx219-overlay.dts
++++ b/arch/arm/boot/dts/overlays/imx219-overlay.dts
+@@ -27,12 +27,6 @@
+ 				VDIG-supply = <&imx219_vdig>;	/* 1.8v */
+ 				VDDL-supply = <&imx219_vddl>;	/* 1.2v */
+ 
+-				imx219_clk: camera-clk {
+-					compatible = "fixed-clock";
+-					#clock-cells = <0>;
+-					clock-frequency = <24000000>;
+-				};
+-
+ 				port {
+ 					imx219_0: endpoint {
+ 						remote-endpoint = <&csi1_ep>;
+@@ -90,6 +84,12 @@
+ 				regulator-min-microvolt = <1200000>;
+ 				regulator-max-microvolt = <1200000>;
+ 			};
++
++			imx219_clk: camera-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <24000000>;
++			};
+ 		};
+ 	};
+ 
+--- a/arch/arm/boot/dts/overlays/irs1125-overlay.dts
++++ b/arch/arm/boot/dts/overlays/irs1125-overlay.dts
+@@ -21,12 +21,6 @@
+ 				pwdn-gpios = <&gpio 5 0>;
+ 				clocks = <&irs1125_clk>;
+ 
+-				irs1125_clk: camera-clk {
+-					compatible = "fixed-clock";
+-					#clock-cells = <0>;
+-					clock-frequency = <26000000>;
+-				};
+-
+ 				port {
+ 					irs1125_0: endpoint {
+ 						remote-endpoint = <&csi1_ep>;
+@@ -75,4 +69,15 @@
+ 			cam0-pwdn      = <&irs1125>,"pwdn-gpios:4";
+ 		};
+ 	};
++
++	fragment@5 {
++		target-path = "/";
++		__overlay__ {
++			irs1125_clk: camera-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <26000000>;
++			};
++		};
++	};
+ };
+--- a/arch/arm/boot/dts/overlays/mcp2515-can0-overlay.dts
++++ b/arch/arm/boot/dts/overlays/mcp2515-can0-overlay.dts
+@@ -35,7 +35,7 @@
+ 
+     /* the clock/oscillator of the can-controller */
+     fragment@3 {
+-        target-path = "/clocks";
++        target-path = "/";
+         __overlay__ {
+             /* external oscillator of mcp2515 on SPI0.0 */
+             can0_osc: can0_osc {
+--- a/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts
++++ b/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts
+@@ -35,7 +35,7 @@
+ 
+     /* the clock/oscillator of the can-controller */
+     fragment@3 {
+-        target-path = "/clocks";
++        target-path = "/";
+         __overlay__ {
+             /* external oscillator of mcp2515 on spi0.1 */
+             can1_osc: can1_osc {
+--- a/arch/arm/boot/dts/overlays/midi-uart0-overlay.dts
++++ b/arch/arm/boot/dts/overlays/midi-uart0-overlay.dts
+@@ -15,7 +15,7 @@
+ 	compatible = "brcm,bcm2835";
+ 
+ 	fragment@0 {
+-		target-path = "/clocks";
++		target-path = "/";
+ 		__overlay__ {
+ 			midi_clk: midi_clk {
+ 				compatible = "fixed-clock";
+--- a/arch/arm/boot/dts/overlays/ov5647-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov5647-overlay.dts
+@@ -21,12 +21,6 @@
+ 				pwdn-gpios = <&gpio 41 1>, <&gpio 32 1>;
+ 				clocks = <&ov5647_clk>;
+ 
+-				ov5647_clk: camera-clk {
+-					compatible = "fixed-clock";
+-					#clock-cells = <0>;
+-					clock-frequency = <25000000>;
+-				};
+-
+ 				port {
+ 					ov5647_0: endpoint {
+ 						remote-endpoint = <&csi1_ep>;
+@@ -77,4 +71,15 @@
+ 			cam0-led       = <&ov5647>,"pwdn-gpios:16";
+ 		};
+ 	};
++
++	fragment@5 {
++		target-path = "/";
++		__overlay__ {
++			ov5647_clk: camera-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <25000000>;
++			};
++		};
++	};
+ };
+--- a/arch/arm/boot/dts/overlays/rpivid-v4l2-overlay.dts
++++ b/arch/arm/boot/dts/overlays/rpivid-v4l2-overlay.dts
+@@ -26,12 +26,6 @@
+ 
+ 				clocks = <&hevc_clk>;
+ 				clock-names = "hevc";
+-
+-				hevc_clk: hevc_clk {
+-					compatible = "fixed-clock";
+-					#clock-cells = <0>;
+-					clock-frequency = <500000000>;
+-				};
+ 			};
+ 		};
+ 	};
+@@ -53,4 +47,15 @@
+ 			};
+ 		};
+ 	};
++
++	fragment@2 {
++		target-path = "/";
++		__overlay__ {
++			hevc_clk: hevc_clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <500000000>;
++			};
++		};
++	};
+ };
+--- a/arch/arm/boot/dts/overlays/sc16is752-spi1-overlay.dts
++++ b/arch/arm/boot/dts/overlays/sc16is752-spi1-overlay.dts
+@@ -38,12 +38,6 @@
+ 				#gpio-controller;
+ 				#gpio-cells = <2>;
+ 				spi-max-frequency = <4000000>;
+-
+-				sc16is752_clk: sc16is752_clk {
+-					compatible = "fixed-clock";
+-					#clock-cells = <0>;
+-					clock-frequency = <14745600>;
+-				};
+ 			};
+ 		};
+ 	};
+@@ -55,8 +49,19 @@
+ 		};
+ 	};
+ 
+-    __overrides__ {
++	fragment@3 {
++		target-path = "/";
++		__overlay__ {
++			sc16is752_clk: sc16is752_spi1_clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <14745600>;
++			};
++		};
++	};
++
++	__overrides__ {
+ 		int_pin = <&sc16is752>,"interrupts:0";
+ 		xtal = <&sc16is752_clk>,"clock-frequency:0";
+-    };
++	};
+ };
+--- a/arch/arm/boot/dts/overlays/tc358743-overlay.dts
++++ b/arch/arm/boot/dts/overlays/tc358743-overlay.dts
+@@ -21,12 +21,6 @@
+ 				clocks = <&tc358743_clk>;
+ 				clock-names = "refclk";
+ 
+-				tc358743_clk: bridge-clk {
+-					compatible = "fixed-clock";
+-					#clock-cells = <0>;
+-					clock-frequency = <27000000>;
+-				};
+-
+ 				port {
+ 					tc358743: endpoint {
+ 						remote-endpoint = <&csi1_ep>;
+@@ -81,6 +75,17 @@
+ 		};
+ 	};
+ 
++	fragment@6 {
++		target-path = "/";
++		__overlay__ {
++			tc358743_clk: bridge-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <27000000>;
++			};
++		};
++	};
++
+ 	__overrides__ {
+ 		4lane = <0>, "-2+3";
+ 		link-frequency = <&tc358743>,"link-frequencies#0";