brcm2708: update to latest patches from RPi foundation

[openwrt/staging/wigyori.git] / target / linux / brcm2708 / patches-4.19 / 950-0690-overlays-mcp23017-Add-option-for-not-connecting-the-.patch

diff --git a/target/linux/brcm2708/patches-4.19/950-0690-overlays-mcp23017-Add-option-for-not-connecting-the-.patch b/target/linux/brcm2708/patches-4.19/950-0690-overlays-mcp23017-Add-option-for-not-connecting-the-.patch
new file mode 100644 (file)
index 0000000..e6376d7
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0690-overlays-mcp23017-Add-option-for-not-connecting-the-.patch
@@ -0,0 +1,66 @@
+From b37ac8c50684c3517fb9c6f737e7ea444a7d7405 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Thu, 5 Sep 2019 17:41:46 +0100
+Subject: [PATCH] overlays: mcp23017: Add option for not connecting the
+ int GPIO
+
+The interrupt GPIO is optional to the driver, therefore add an
+option to not configure it.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ arch/arm/boot/dts/overlays/README             |  1 +
+ .../boot/dts/overlays/mcp23017-overlay.dts    | 21 +++++++++++++------
+ 2 files changed, 16 insertions(+), 6 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1427,6 +1427,7 @@ Params: gpiopin                 Gpio pin
+         addr                    I2C address of the MCP23017 (default: 0x20)
+ 
+         mcp23008                Configure an MCP23008 instead.
++        noints                  Disable the interrupt GPIO line.
+ 
+ 
+ Name:   mcp23s17
+--- a/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
++++ b/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
+@@ -34,11 +34,6 @@
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+-                              #interrupt-cells=<2>;
+-                              interrupt-parent = <&gpio>;
+-                              interrupts = <4 2>;
+-                              interrupt-controller;
+-                              microchip,irq-mirror;
+ 
+                               status = "okay";
+                       };
+@@ -52,11 +47,25 @@
+               };
+       };
+ 
++      fragment@4 {
++              target = <&i2c1>;
++              __overlay__ {
++                      mcp23017_irq: mcp@20 {
++                              #interrupt-cells=<2>;
++                              interrupt-parent = <&gpio>;
++                              interrupts = <4 2>;
++                              interrupt-controller;
++                              microchip,irq-mirror;
++                      };
++              };
++      };
++
+       __overrides__ {
+               gpiopin = <&mcp23017_pins>,"brcm,pins:0",
+-                              <&mcp23017>,"interrupts:0";
++                              <&mcp23017_irq>,"interrupts:0";
+               addr = <&mcp23017>,"reg:0", <&mcp23017_pins>,"reg:0";
+               mcp23008 = <0>,"=3";
++              noints = <0>,"!1!4";
+       };
+ };
+