From 26feadc04154889119f6e86baab80435d0b482af Mon Sep 17 00:00:00 2001
From: petit-miner <cooker5000@gmail.com>
Date: Fri, 10 Jul 2015 13:59:18 +0200
Subject: [PATCH 1/2] Added support for 2 mcp2515 CAN Bus IC

---
 .../dts/overlays/mcp2515-can1-overlay.dts     | 70 +++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts

diff --git a/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts b/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts
new file mode 100644
index 00000000000000..e46c5d049fa904
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts
@@ -0,0 +1,70 @@
+/*
+ * Device tree overlay for mcp251x/can1 on spi0.0 edited by petit_miner
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+    /* disable spi-dev for spi0.0 */
+    fragment@0 {
+        target = <&spi0>;
+        __overlay__ {
+            status = "okay";
+            spidev@1{
+                status = "disabled";
+            };
+        };
+    };
+
+    /* the interrupt pin of the can-controller */
+    fragment@1 {
+        target = <&gpio>;
+        __overlay__ {
+            can1_pins: can1_pins {
+                brcm,pins = <25>;
+                brcm,function = <0>; /* input */
+            };
+        };
+    };
+
+    /* the clock/oscillator of the can-controller */
+    fragment@2 {
+        target-path = "/clocks";
+        __overlay__ {
+            /* external oscillator of mcp2515 on SPI0.0 */
+            can1_osc: can1_osc {
+                compatible = "fixed-clock";
+                #clock-cells = <0>;
+                clock-frequency  = <16000000>;
+            };
+        };
+    };
+
+    /* the spi config of the can-controller itself binding everything together */
+    fragment@3 {
+        target = <&spi0>;
+        __overlay__ {
+            /* needed to avoid dtc warning */
+            #address-cells = <1>;
+            #size-cells = <0>;
+            can1: mcp2515@1 {
+                reg = <1>;
+                compatible = "microchip,mcp2515";
+                pinctrl-names = "default";
+                pinctrl-0 = <&can1_pins>;
+                spi-max-frequency = <10000000>;
+                interrupt-parent = <&gpio>;
+                interrupts = <25 0x2>;
+                clocks = <&can1_osc>;
+            };
+        };
+    };
+    __overrides__ {
+        oscillator = <&can1_osc>,"clock-frequency:0";
+        spimaxfrequency = <&can1>,"spi-max-frequency:0";
+        interrupt = <&can1_pins>,"brcm,pins:0",<&can1>,"interrupts:0";
+    };
+};
+

From f45a961da8eb08673ef97ce7711c90e57b2e382c Mon Sep 17 00:00:00 2001
From: petit-miner <cooker5000@gmail.com>
Date: Fri, 10 Jul 2015 14:21:53 +0200
Subject: [PATCH 2/2] Update mcp2515-can1-overlay.dts

---
 arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts b/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts
index e46c5d049fa904..52f7f58da93073 100644
--- a/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts
+++ b/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts
@@ -1,5 +1,5 @@
 /*
- * Device tree overlay for mcp251x/can1 on spi0.0 edited by petit_miner
+ * Device tree overlay for mcp251x/can1 on spi0.1 edited by petit_miner
  */
 
 /dts-v1/;
@@ -7,7 +7,7 @@
 
 / {
     compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
-    /* disable spi-dev for spi0.0 */
+    /* disable spi-dev for spi0.1 */
     fragment@0 {
         target = <&spi0>;
         __overlay__ {
@@ -33,7 +33,7 @@
     fragment@2 {
         target-path = "/clocks";
         __overlay__ {
-            /* external oscillator of mcp2515 on SPI0.0 */
+            /* external oscillator of mcp2515 on SPI0.1 */
             can1_osc: can1_osc {
                 compatible = "fixed-clock";
                 #clock-cells = <0>;