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, 47 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-4.19/950-0036-amba_pl011-Add-cts-event-workaround-DT-property.patch b/target/linux/bcm27xx/patches-4.19/950-0036-amba_pl011-Add-cts-event-workaround-DT-property.patch
new file mode 100644
index 0000000000..d7514a5525
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0036-amba_pl011-Add-cts-event-workaround-DT-property.patch
@@ -0,0 +1,47 @@
+From 17a4507175ca6018ea40e91c9d753bc39f043d99 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 29 Sep 2017 10:32:19 +0100
+Subject: [PATCH] amba_pl011: Add cts-event-workaround DT property
+
+The BCM2835 PL011 implementation seems to have a bug that can lead to a
+transmission lockup if CTS changes frequently. A workaround was added to
+the driver with a vendor-specific flag to enable it, but this flag is
+currently not set for ARM implementations.
+
+Add a "cts-event-workaround" property to Pi DTBs and use the presence
+of that property to force the flag to be enabled in the driver.
+
+See: https://github.com/raspberrypi/linux/issues/1280
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ Documentation/devicetree/bindings/serial/pl011.txt | 3 +++
+ drivers/tty/serial/amba-pl011.c                    | 5 +++++
+ 2 files changed, 8 insertions(+)
+
+--- a/Documentation/devicetree/bindings/serial/pl011.txt
++++ b/Documentation/devicetree/bindings/serial/pl011.txt
+@@ -35,6 +35,9 @@ Optional properties:
+ - poll-timeout-ms:
+ 	   Poll timeout when auto-poll is set, default
+ 	   3000ms.
++- cts-event-workaround:
++	   Enables the (otherwise vendor-specific) workaround for the
++	   CTS-induced TX lockup.
+ 
+ See also bindings/arm/primecell.txt
+ 
+--- a/drivers/tty/serial/amba-pl011.c
++++ b/drivers/tty/serial/amba-pl011.c
+@@ -2659,6 +2659,11 @@ static int pl011_probe(struct amba_devic
+ 	if (IS_ERR(uap->clk))
+ 		return PTR_ERR(uap->clk);
+ 
++	if (of_property_read_bool(dev->dev.of_node, "cts-event-workaround")) {
++	    vendor->cts_event_workaround = true;
++	    dev_info(&dev->dev, "cts_event_workaround enabled\n");
++	}
++
+ 	uap->reg_offset = vendor->reg_offset;
+ 	uap->vendor = vendor;
+ 	uap->fifosize = vendor->get_fifosize(dev);