brcm2708: rename target to bcm27xx

This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 72 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-4.19/950-0152-Update-gpio-fan-overlay.dts-2711.patch b/target/linux/bcm27xx/patches-4.19/950-0152-Update-gpio-fan-overlay.dts-2711.patch
new file mode 100644
index 0000000000..c8f375942e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0152-Update-gpio-fan-overlay.dts-2711.patch
@@ -0,0 +1,72 @@
+From 4a2be174938ac115beac4f07fa8b7ee33406cde8 Mon Sep 17 00:00:00 2001
+From: Paul <paulenuta@users.noreply.github.com>
+Date: Thu, 11 Oct 2018 12:17:20 +0300
+Subject: [PATCH] Update gpio-fan-overlay.dts (#2711)
+
+Add references, links, clear details, some typo correction.
+---
+ .../boot/dts/overlays/gpio-fan-overlay.dts    | 36 +++++++++++--------
+ 1 file changed, 22 insertions(+), 14 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/gpio-fan-overlay.dts
++++ b/arch/arm/boot/dts/overlays/gpio-fan-overlay.dts
+@@ -1,29 +1,37 @@
+ /*
+  * Overlay for the Raspberry Pi GPIO Fan @ BCM GPIO12.
++ * References: 
++ *	- https://www.raspberrypi.org/forums/viewtopic.php?f=107&p=1367135#p1365084
++ *
+  * Optional parameters:
+- *	- "gpiopin"	- default GPIO12
+- * 	- "temp"	- default 55000
++ *	- "gpiopin"	- BCM number of the pin driving the fan, default 12 (GPIO12);
++ * 	- "temp"	- CPU temperature at which fan is started in millicelsius, default 55000;
++ *
+  * Requires:
+- *	- kernel configurations: CONFIG_SENSORS_GPIO_FAN=m and CONFIG_SENSORS_PWM_FAN=m;
+- *	- kernel rebuid;
+- *	- DC Fan connected to GPIO via a N-MOSFET (2N7002)
++ *	- kernel configurations: CONFIG_SENSORS_GPIO_FAN=m;
++ *	- kernel rebuild;
++ *	- N-MOSFET connected to gpiopin, 2N7002-[https://en.wikipedia.org/wiki/2N7000];
++ *	- DC Fan connected to N-MOSFET Drain terminal, a 12V fan is working fine and quite silently;
++ *	  [https://www.tme.eu/en/details/ee40101s1-999-a/dc12v-fans/sunon/ee40101s1-1000u-999/]
+  *
+  *                   ┌─────────────────────┐
+  *                   │Fan negative terminal│
+  *                   └┬────────────────────┘
+- *                    │
+- *                 │──┘
++ *                    │D
++ *             G   │──┘
+  * [GPIO12]──────┤ │<─┐  2N7002
+  *                 │──┤
+- *                    │
++ *                    │S
+  *                   ─┴─
+  *                   GND
+  *
+- * sudo dtc -W no-unit_address_vs_reg -@ -I dts -O dtb -o /boot/overlays/gpio-fan.dtbo gpio-fan.dts
+- * sudo nano /boot/config.txt add "dtoverlay=gpio-fan" or "dtoverlay=gpio-fan,gpiopin=12,temp=45000"
+- * or
+- * sudo sh -c "echo '\n# Enable PI GPIO-Fan\ndtoverlay=gpio-fan\n' >> /boot/config.txt"
+- * sudo sh -c "echo '\n# Enable PI GPIO-Fan\ndtoverlay=gpio-fan,gpiopin=12\n' >> /boot/config.txt"
++ * Build:
++ * 	- `sudo dtc -W no-unit_address_vs_reg -@ -I dts -O dtb -o /boot/overlays/gpio-fan.dtbo gpio-fan-overlay.dts`
++ * Activate:
++ *	- sudo nano /boot/config.txt add "dtoverlay=gpio-fan" or "dtoverlay=gpio-fan,gpiopin=12,temp=45000"
++ *	 or
++ *	- sudo sh -c 'printf "\n# Enable PI GPIO-Fan Default\ndtoverlay=gpio-fan\n" >> /boot/config.txt'
++ *	- sudo sh -c 'printf "\n# Enable PI GPIO-Fan Custom\ntoverlay=gpio-fan,gpiopin=12,temp=45000\n" >> /boot/config.txt'
+  *
+  */
+ /dts-v1/;
+@@ -52,7 +60,7 @@
+ 			trips {
+ 				cpu_hot: trip-point@0 {
+ 					temperature = <55000>;	/* (millicelsius) Fan started at 55°C */
+-					hysteresis = <5000>;	/* (millicelsius) Fan stopped at 50°C */
++					hysteresis = <10000>;	/* (millicelsius) Fan stopped at 45°C */
+ 					type = "active";
+ 				};
+ 			};