bcm27xx: add support for linux v5.15

Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 545 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.15/950-0680-dtoverlays-Rework-vc4-kms-dpi-overlays-to-remove-dup.patch b/target/linux/bcm27xx/patches-5.15/950-0680-dtoverlays-Rework-vc4-kms-dpi-overlays-to-remove-dup.patch
new file mode 100644
index 0000000000..1aa699f3fa
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0680-dtoverlays-Rework-vc4-kms-dpi-overlays-to-remove-dup.patch
@@ -0,0 +1,545 @@
+From 2cc810fd22f30acabbf5e6726e003c5da56d3212 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 31 Jan 2022 17:25:19 +0000
+Subject: [PATCH] dtoverlays: Rework vc4-kms-dpi overlays to remove
+ duplication
+
+Removes all the common panel, dpi, and backlight configuration
+from the individual vc4-kms-dpi-* files into vc4-kms-dpi.dtsi.
+
+Creates a new vc4-kms-dpi-panel-overlay.dts for preconfigured
+panels, with overrides to enable the different panel configurations.
+
+Deprecates vc4-kms-dpi-at056tn53v1 as superceded by vc4-kms-dpi-panel.
+vc4-kms-kippah-7inch not deprecated for now as it is likely to be
+in wider use than at056tn53v1.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |   2 +-
+ arch/arm/boot/dts/overlays/README             |  33 ++++-
+ arch/arm/boot/dts/overlays/overlay_map.dts    |   4 +
+ .../vc4-kms-dpi-at056tn53v1-overlay.dts       |  44 ------
+ .../overlays/vc4-kms-dpi-generic-overlay.dts  | 138 ++++--------------
+ .../overlays/vc4-kms-dpi-panel-overlay.dts    |  62 ++++++++
+ arch/arm/boot/dts/overlays/vc4-kms-dpi.dtsi   | 109 ++++++++++++++
+ .../overlays/vc4-kms-kippah-7inch-overlay.dts |  27 +---
+ 8 files changed, 235 insertions(+), 184 deletions(-)
+ delete mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dpi-at056tn53v1-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dpi-panel-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dpi.dtsi
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -234,8 +234,8 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	upstream-pi4.dtbo \
+ 	vc4-fkms-v3d.dtbo \
+ 	vc4-fkms-v3d-pi4.dtbo \
+-	vc4-kms-dpi-at056tn53v1.dtbo \
+ 	vc4-kms-dpi-generic.dtbo \
++	vc4-kms-dpi-panel.dtbo \
+ 	vc4-kms-dsi-7inch.dtbo \
+ 	vc4-kms-dsi-lt070me05000.dtbo \
+ 	vc4-kms-dsi-lt070me05000-v2.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3624,10 +3624,8 @@ Params: cma-512                 CMA is 5
+ 
+ 
+ Name:   vc4-kms-dpi-at056tn53v1
+-Info:   Enable an Innolux 5.6in VGA TFT connected to DPI interface under KMS.
+-        Requires vc4-kms-v3d to be loaded.
+-Load:   dtoverlay=vc4-kms-dpi-at056tn53v1
+-Params: <None>
++Info:   This overlay is now deprecated - see vc4-kms-dpi-panel,at056tn53v1
++Load:   <Deprecated>
+ 
+ 
+ Name:   vc4-kms-dpi-generic
+@@ -3659,6 +3657,33 @@ Params: clock-frequency         Display
+         backlight-gpio          Defines a GPIO to be used for backlight control
+                                 (default of none).
+         backlight-pwm           Defines a PWM channel to be used for backlight
++                                control (default of none). NB Disables audio
++                                headphone output as that also uses PWM.
++        backlight-pwm-chan      Choose channel on &pwm node for backlight
++                                control.
++                                (default 0).
++        backlight-pwm-gpio      GPIO pin to be used for the PWM backlight. See
++                                pwm-2chan for valid options.
++                                (default 18 - note this can only work with
++                                 rgb666-padhi).
++        backlight-pwm-func      Pin function of GPIO used for the PWM
++                                backlight.
++                                See pwm-2chan for valid options.
++                                (default 2).
++        backlight-def-brightness
++                                Set the default brightness. Normal range 1-16.
++                                (default 16).
++
++
++Name:   vc4-kms-dpi-panel
++Info:   Enable a preconfigured KMS DPI panel.
++        Requires vc4-kms-v3d to be loaded.
++Load:   dtoverlay=vc4-kms-dpi-panel,<param>=<val>
++Params: at056tn53v1             Enable an Innolux 5.6in VGA TFT
++        kippah-7inch            Enable an Adafruit Kippah with 7inch panel.
++        backlight-gpio          Defines a GPIO to be used for backlight control
++                                (default of none).
++        backlight-pwm           Defines a PWM channel to be used for backlight
+                                 control (default of none). NB Disables audio
+                                 headphone output as that also uses PWM.
+         backlight-pwm-chan      Choose channel on &pwm node for backlight
+--- a/arch/arm/boot/dts/overlays/overlay_map.dts
++++ b/arch/arm/boot/dts/overlays/overlay_map.dts
+@@ -151,6 +151,10 @@
+ 		bcm2711;
+ 	};
+ 
++	vc4-kms-dpi-at056tn53v1 {
++		deprecated = "use vc4-kms-dpi-panel,at056tn53v1";
++	};
++
+ 	vc4-kms-v3d {
+ 		bcm2835;
+ 		bcm2711 = "vc4-kms-v3d-pi4";
+--- a/arch/arm/boot/dts/overlays/vc4-kms-dpi-at056tn53v1-overlay.dts
++++ /dev/null
+@@ -1,44 +0,0 @@
+-/*
+- * vc4-kms-dpi-at056tn53v1-overlay.dts
+- */
+-
+-/dts-v1/;
+-/plugin/;
+-
+-#include <dt-bindings/gpio/gpio.h>
+-#include <dt-bindings/pinctrl/bcm2835.h>
+-
+-/ {
+-	compatible = "brcm,bcm2835";
+-
+-	fragment@0 {
+-		target-path = "/";
+-		__overlay__ {
+-			panel: panel {
+-				compatible = "innolux,at056tn53v1", "simple-panel";
+-
+-				port {
+-					panel_in: endpoint {
+-						remote-endpoint = <&dpi_out>;
+-					};
+-				};
+-			};
+-		};
+-	};
+-
+-	fragment@1 {
+-		target = <&dpi>;
+-		__overlay__  {
+-			status = "okay";
+-
+-			pinctrl-names = "default";
+-			pinctrl-0 = <&dpi_18bit_cpadhi_gpio0>;
+-
+-			port {
+-				dpi_out: endpoint {
+-					remote-endpoint = <&panel_in>;
+-				};
+-			};
+-		};
+-	};
+-};
+--- a/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
+@@ -5,124 +5,43 @@
+ /dts-v1/;
+ /plugin/;
+ 
+-#include <dt-bindings/gpio/gpio.h>
+-#include <dt-bindings/pinctrl/bcm2835.h>
++#include "vc4-kms-dpi.dtsi"
+ 
+ / {
+ 	compatible = "brcm,bcm2835";
+ 
+ 	fragment@0 {
+-		target-path = "/";
+-		__overlay__ {
+-			panel: panel {
+-				compatible = "panel-dpi";
+-
+-				width-mm = <154>;
+-				height-mm = <83>;
+-				bus-format = <0x1009>;
+-
+-				timing: panel-timing {
+-					clock-frequency = <29500000>;
+-					hactive = <800>;
+-					hfront-porch = <24>;
+-					hsync-len = <72>;
+-					hback-porch = <96>;
+-					hsync-active = <1>;
+-					vactive = <480>;
+-					vfront-porch = <3>;
+-					vsync-len = <10>;
+-					vback-porch = <7>;
+-					vsync-active = <1>;
+-
+-					de-active = <1>;
+-					pixelclk-active = <1>;
+-				};
+-
+-				port {
+-					panel_in: endpoint {
+-						remote-endpoint = <&dpi_out>;
+-					};
+-				};
+-			};
+-		};
+-	};
+-
+-	fragment@1 {
+-		target = <&dpi>;
+-		dpi_node: __overlay__  {
+-			status = "okay";
+-
+-			pinctrl-names = "default";
+-			pinctrl-0 = <&dpi_18bit_gpio0>;
+-
+-			port {
+-				dpi_out: endpoint {
+-					remote-endpoint = <&panel_in>;
+-				};
+-			};
+-		};
+-	};
+-
+-	fragment@2 {
+-		target = <&panel>;
+-		__dormant__  {
+-			backlight = <&backlight>;
+-		};
+-	};
+-
+-	fragment@3 {
+-		target-path = "/";
+-		__dormant__  {
+-			backlight: backlight {
+-				compatible = "gpio-backlight";
+-				gpios = <&gpio 255 GPIO_ACTIVE_HIGH>;
+-			};
+-		};
+-	};
+-
+-	fragment@4 {
+ 		target = <&panel>;
+-		__dormant__  {
+-			backlight = <&backlight_pwm>;
+-		};
+-	};
+-
+-	fragment@5 {
+-		target-path = "/";
+-		__dormant__  {
+-			backlight_pwm: backlight_pwm {
+-				compatible = "pwm-backlight";
+-				brightness-levels = <0 6 8 12 16 24 32 40 48 64 96 128 160 192 224 255>;
+-				default-brightness-level = <16>;
+-				pwms = <&pwm 0 200000>;
+-			};
+-		};
+-	};
++		__overlay__  {
++			compatible = "panel-dpi";
+ 
+-	fragment@6 {
+-		target = <&pwm>;
+-		__dormant__ {
+-			pinctrl-names = "default";
+-			pinctrl-0 = <&pwm_pins>;
+-			assigned-clock-rates = <1000000>;
+-			status = "okay";
+-		};
+-	};
++			width-mm = <154>;
++			height-mm = <83>;
++			bus-format = <0x1009>;
++
++			timing: panel-timing {
++				clock-frequency = <29500000>;
++				hactive = <800>;
++				hfront-porch = <24>;
++				hsync-len = <72>;
++				hback-porch = <96>;
++				hsync-active = <1>;
++				vactive = <480>;
++				vfront-porch = <3>;
++				vsync-len = <10>;
++				vback-porch = <7>;
++				vsync-active = <1>;
+ 
+-	fragment@7 {
+-		target = <&gpio>;
+-		__dormant__ {
+-			pwm_pins: pwm_pins {
+-				brcm,pins = <18>;
+-				brcm,function = <2>; /* Alt5 */
++				de-active = <1>;
++				pixelclk-active = <1>;
+ 			};
+ 		};
+ 	};
+ 
+-	fragment@8 {
+-		target = <&audio>;
+-		__dormant__  {
+-		    brcm,disable-headphones;
++	fragment@1 {
++		target = <&dpi>;
++		__overlay__  {
++			pinctrl-0 = <&dpi_18bit_gpio0>;
+ 		};
+ 	};
+ 
+@@ -151,12 +70,5 @@
+ 		rgb888 = <&panel>, "bus-format:0=0x100a",
+ 			<&dpi_node>, "pinctrl-0:0=",<&dpi_gpio0>;
+ 		bus-format = <&panel>, "bus-format:0";
+-		backlight-gpio = <0>, "+2+3",
+-			<&backlight>, "gpios:4";
+-		backlight-pwm = <0>, "+4+5+6+7+8";
+-		backlight-pwm-chan = <&backlight_pwm>, "pwms:4";
+-		backlight-pwm-gpio = <&pwm_pins>, "brcm,pins:0";
+-		backlight-pwm-func = <&pwm_pins>, "brcm,function:0";
+-		backlight-def-brightness = <&backlight_pwm>, "default-brightness-level:0";
+ 	};
+ };
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-panel-overlay.dts
+@@ -0,0 +1,62 @@
++/*
++ * vc4-kms-dpi-panel-overlay.dts
++ * Support for any predefined DPI panel.
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include "vc4-kms-dpi.dtsi"
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&panel>;
++		__dormant__  {
++			compatible = "innolux,at056tn53v1", "simple-panel";
++		};
++	};
++	fragment@1 {
++		target = <&panel>;
++		__dormant__  {
++			compatible = "ontat,yx700wv03", "simple-panel";
++		};
++	};
++
++	fragment@90 {
++		target = <&dpi>;
++		__dormant__  {
++			pinctrl-0 = <&dpi_18bit_cpadhi_gpio0>;
++		};
++	};
++	fragment@91 {
++		target = <&dpi>;
++		__dormant__  {
++			pinctrl-0 = <&dpi_18bit_gpio0>;
++		};
++	};
++	fragment@92 {
++		target = <&dpi>;
++		__dormant__  {
++			pinctrl-0 = <&dpi_gpio0>;
++		};
++	};
++	fragment@93 {
++		target = <&dpi>;
++		__dormant__  {
++			pinctrl-0 = <&dpi_16bit_cpadhi_gpio0>;
++		};
++	};
++	fragment@94 {
++		target = <&dpi>;
++		__dormant__  {
++			pinctrl-0 = <&dpi_16bit_gpio0>;
++		};
++	};
++
++	__overrides__ {
++		at056tn53v1 = <0>, "+0+90";
++		kippah-7inch = <0>, "+1+91";
++	};
++};
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi.dtsi
+@@ -0,0 +1,109 @@
++/*
++ * vc4-kms-dpi.dtsi
++ */
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	fragment@100 {
++		target-path = "/";
++		__overlay__ {
++			panel: panel {
++				port {
++					panel_in: endpoint {
++						remote-endpoint = <&dpi_out>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@101 {
++		target = <&dpi>;
++		dpi_node: __overlay__  {
++			status = "okay";
++
++			pinctrl-names = "default";
++
++			port {
++				dpi_out: endpoint {
++					remote-endpoint = <&panel_in>;
++				};
++			};
++		};
++	};
++
++	fragment@102 {
++		target = <&panel>;
++		__dormant__  {
++			backlight = <&backlight>;
++		};
++	};
++
++	fragment@103 {
++		target-path = "/";
++		__dormant__  {
++			backlight: backlight {
++				compatible = "gpio-backlight";
++				gpios = <&gpio 255 GPIO_ACTIVE_HIGH>;
++			};
++		};
++	};
++
++	fragment@104 {
++		target = <&panel>;
++		__dormant__  {
++			backlight = <&backlight_pwm>;
++		};
++	};
++
++	fragment@105 {
++		target-path = "/";
++		__dormant__  {
++			backlight_pwm: backlight_pwm {
++				compatible = "pwm-backlight";
++				brightness-levels = <0 6 8 12 16 24 32 40 48 64 96 128 160 192 224 255>;
++				default-brightness-level = <16>;
++				pwms = <&pwm 0 200000>;
++			};
++		};
++	};
++
++	fragment@106 {
++		target = <&pwm>;
++		__dormant__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&pwm_pins>;
++			assigned-clock-rates = <1000000>;
++			status = "okay";
++		};
++	};
++
++	fragment@107 {
++		target = <&gpio>;
++		__dormant__ {
++			pwm_pins: pwm_pins {
++				brcm,pins = <18>;
++				brcm,function = <2>; /* Alt5 */
++			};
++		};
++	};
++
++	fragment@108 {
++		target = <&audio>;
++		__dormant__  {
++		    brcm,disable-headphones;
++		};
++	};
++
++	__overrides__ {
++		backlight-gpio = <0>, "+102+103",
++			<&backlight>, "gpios:4";
++		backlight-pwm = <0>, "+104+105+106+107+108";
++		backlight-pwm-chan = <&backlight_pwm>, "pwms:4";
++		backlight-pwm-gpio = <&pwm_pins>, "brcm,pins:0";
++		backlight-pwm-func = <&pwm_pins>, "brcm,function:0";
++		backlight-def-brightness = <&backlight_pwm>, "default-brightness-level:0";
++	};
++};
+--- a/arch/arm/boot/dts/overlays/vc4-kms-kippah-7inch-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-kippah-7inch-overlay.dts
+@@ -1,43 +1,26 @@
+ /*
+- * vc4-kms-v3d-overlay.dts
++ * vc4-kms-kippah-7inch-overlay.dts
+  */
+ 
+ /dts-v1/;
+ /plugin/;
+ 
+-#include <dt-bindings/pinctrl/bcm2835.h>
++#include "vc4-kms-dpi.dtsi"
+ 
+ / {
+ 	compatible = "brcm,bcm2835";
+ 
+ 	fragment@0 {
+-		target-path = "/";
+-		__overlay__ {
+-			panel: panel {
+-				compatible = "ontat,yx700wv03", "simple-panel";
+-
+-				port {
+-					panel_in: endpoint {
+-						remote-endpoint = <&dpi_out>;
+-					};
+-				};
+-			};
++		target = <&panel>;
++		__overlay__  {
++			compatible = "ontat,yx700wv03", "simple-panel";
+ 		};
+ 	};
+ 
+ 	fragment@1 {
+ 		target = <&dpi>;
+ 		__overlay__  {
+-			status = "okay";
+-
+-			pinctrl-names = "default";
+ 			pinctrl-0 = <&dpi_18bit_gpio0>;
+-
+-			port {
+-				dpi_out: endpoint@0 {
+-					remote-endpoint = <&panel_in>;
+-				};
+-			};
+ 		};
+ 	};
+ };