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Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0208-BCM270X_DT-Remove-explicit-claiming-of-UART-pins.patch')
-rw-r--r--target/linux/brcm2708/patches-4.4/0208-BCM270X_DT-Remove-explicit-claiming-of-UART-pins.patch89
1 files changed, 89 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0208-BCM270X_DT-Remove-explicit-claiming-of-UART-pins.patch b/target/linux/brcm2708/patches-4.4/0208-BCM270X_DT-Remove-explicit-claiming-of-UART-pins.patch
new file mode 100644
index 0000000000..35927a9a4b
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0208-BCM270X_DT-Remove-explicit-claiming-of-UART-pins.patch
@@ -0,0 +1,89 @@
+From f26e0311778ed510125e3d83ebf22109dc986835 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Sat, 19 Mar 2016 16:51:37 +0000
+Subject: [PATCH 208/304] BCM270X_DT: Remove explicit claiming of UART pins
+
+It is convenient to be able to map a different function to the UART
+pins (e.g. DPI for vga666) without having to disable the UART first.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/boot/dts/bcm2710-rpi-3-b.dts | 6 +++---
+ .../boot/dts/overlays/pi3-disable-bt-overlay.dts | 10 ++++-----
+ .../boot/dts/overlays/pi3-miniuart-bt-overlay.dts | 25 +++++++++++-----------
+ 3 files changed, 20 insertions(+), 21 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
+@@ -57,9 +57,9 @@
+ };
+
+ uart1_pins: uart1_pins {
+- brcm,pins = <14 15>;
+- brcm,function = <2>; /* alt5=UART1 */
+- brcm,pull = <0 2>;
++ brcm,pins;
++ brcm,function;
++ brcm,pull;
+ };
+ };
+
+--- a/arch/arm/boot/dts/overlays/pi3-disable-bt-overlay.dts
++++ b/arch/arm/boot/dts/overlays/pi3-disable-bt-overlay.dts
+@@ -28,13 +28,11 @@
+ };
+
+ fragment@2 {
+- target = <&gpio>;
++ target = <&uart0_pins>;
+ __overlay__ {
+- uart0_pins: uart0_pins {
+- brcm,pins = <14 15>;
+- brcm,function = <4>; /* alt0 */
+- brcm,pull = <0 2>;
+- };
++ brcm,pins;
++ brcm,function;
++ brcm,pull;
+ };
+ };
+
+--- a/arch/arm/boot/dts/overlays/pi3-miniuart-bt-overlay.dts
++++ b/arch/arm/boot/dts/overlays/pi3-miniuart-bt-overlay.dts
+@@ -37,23 +37,24 @@
+ };
+
+ fragment@2 {
+- target = <&gpio>;
++ target = <&uart0_pins>;
+ __overlay__ {
+- uart0_pins: uart0_pins {
+- brcm,pins = <14 15>;
+- brcm,function = <4>; /* alt0 */
+- brcm,pull = <0 2>;
+- };
+-
+- uart1_pins: uart1_pins {
+- brcm,pins = <32 33>;
+- brcm,function = <2>; /* alt5=UART1 */
+- brcm,pull = <0 2>;
+- };
++ brcm,pins;
++ brcm,function;
++ brcm,pull;
+ };
+ };
+
+ fragment@3 {
++ target = <&uart1_pins>;
++ __overlay__ {
++ brcm,pins = <32 33>;
++ brcm,function = <2>; /* alt5=UART1 */
++ brcm,pull = <0 2>;
++ };
++ };
++
++ fragment@4 {
+ target-path = "/aliases";
+ __overlay__ {
+ serial0 = "/soc/uart@7e201000";