Device Tree Overlay Example1.0.0

11 files changed, 674 insertions, 0 deletions

diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..d60c31a
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,340 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
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+
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+
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+
+  If you develop a new program, and you want it to be of the greatest
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+    This program is free software; you can redistribute it and/or modify
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+    (at your option) any later version.
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+    This program is distributed in the hope that it will be useful,
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+Also add information on how to contact you by electronic and paper mail.
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+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
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+The hypothetical commands `show w' and `show c' should show the appropriate
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+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..5679f26
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,26 @@
+CC?=$(CROSS_COMPILE)gcc
+DTC_OPTIONS?=-@
+DTC_OPTIONS += -Wno-unit_address_vs_reg -Wno-graph_child_address -Wno-pwms_property
+KERNEL_DIR?=../linux
+KERNEL_BUILD_DIR?=$(KERNEL_DIR)
+# Need a dtc new enough to handle the DTC options.
+DTC?=/usr/bin/dtc
+
+MTCDT_DTBO_OBJECTS:= $(patsubst %.dtso,%.dtbo,$(wildcard mtcdt/*.dtso))
+MTRV1_DTBO_OBJECTS:= $(patsubst %.dtso,%.dtbo,$(wildcard mtrv1/*.dtso))
+
+%.pre.dtso: %.dtso
+	$(CC) -E -nostdinc -I$(KERNEL_DIR)/include -I$(KERNEL_DIR)/arch/arm/boot/dts -x assembler-with-cpp -undef -o $@ $^
+
+%.dtbo: %.pre.dtso
+	$(DTC) $(DTC_OPTIONS) -I dts -O dtb -o $@ $^
+
+%.itb: %.its %_dtbos
+	mkimage -D "-i$(KERNEL_BUILD_DIR)/arch/arm/boot/ -i$(KERNEL_BUILD_DIR)/arch/arm/boot/dts -p 1000 $(DTC_OPTIONS)" -f $< $@
+
+mtcdt_dtbos: $(MTCDT_DTBO_OBJECTS)
+mtrv1_dtbos: $(MTRV1_DTBO_OBJECTS)
+
+.PHONY: clean
+clean:
+	rm -f */*.dtbo *.itb
diff --git a/README b/README
new file mode 100644
index 0000000..1a4debd
--- /dev/null
+++ b/README
@@ -0,0 +1,25 @@
+This is the device tree overlay(s) and its make.
+
+The purpose of the overlay is to define the system
+for the mts-io driver and/or mtac drivers.
+
+The correct overlay for the system is loaded at
+runtime before loading the mts-io driver.  A method
+for doing this is the device tree configfs driver.
+
+See this for the format of an overlay:
+
+https://www.kernel.org/doc/Documentation/devicetree/overlay-notes.txt
+
+Note that as of 10 May 2019, no overlays have been
+released.
+
+The biggest flaw in overlays, is the inablitiy to use
+the phandle described in an alias in the boot
+time device tree in an overlay, so it appears
+to be impossible to reference nodes in the main
+device tree in any shorthand method.  For instance, it
+is common to reference a "pio" in device tree to
+use a PIO with GPIO.  For example, it does not appear
+to be possible to use &pioC in the overlay without
+redefining it.
diff --git a/mtcdt/alt-mtcdt-0.0.dtso b/mtcdt/alt-mtcdt-0.0.dtso
new file mode 100644
index 0000000..3e585d2
--- /dev/null
+++ b/mtcdt/alt-mtcdt-0.0.dtso
@@ -0,0 +1,60 @@
+/*
+ * DTS overlay for MTCDT 0.0 hardware version.
+ */
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/dma/at91.h>
+#include <dt-bindings/pinctrl/at91.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/clock/at91.h>
+#define AT91_PINCTRL_OUT_INIT_0 (AT91_PINCTRL_OUTPUT|AT91_PINCTRL_OUTPUT_VAL(0))
+#define AT91_PINCTRL_OUT_INIT_1 (AT91_PINCTRL_OUTPUT|AT91_PINCTRL_OUTPUT_VAL(1))
+
+/ {
+    compatible = "atmel,at91sam9g25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
+    fragment@0 {
+        target-path = "/ahb/apb/pinctrl@fffff400";
+        __overlay__ {
+            mts_io {
+                radio_reset {
+                    atmel,pins = <AT91_PIOC 3 AT91_PERIPH_GPIO AT91_PINCTRL_OUT_INIT_1>;
+                    label = "radio-reset";
+                    alias = "radio-power";
+                }; /* radio */
+                device_reset {
+                    atmel,pins = <AT91_PIOC 2 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
+                    label = "reset";
+                    active-low;
+                };
+                eth_reset {
+                    atmel,pins = <AT91_PIOC 4 AT91_PERIPH_GPIO AT91_PINCTRL_OUT_INIT_1>;
+                    label = "eth-reset";
+                }; /* eth */
+                ls_led {
+                    atmel,pins = <AT91_PIOA 14 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
+                    label = "led-ls";
+                    active_low;
+                };
+                status_led {
+                    atmel,pins = <AT91_PIOA 24 AT91_PERIPH_GPIO AT91_PINCTRL_OUT_INIT_0>;
+                    label = "led-status";
+                    active_low;
+                };
+                led5 {
+                    atmel,pins = <AT91_PIOA 25 AT91_PERIPH_GPIO AT91_PINCTRL_OUT_INIT_0>;
+                    label = "led-cd";
+                    alias = "led-a";
+                    active_low;
+                };
+                led1 {
+                    atmel,pins = <AT91_PIOA 26 AT91_PERIPH_GPIO AT91_PINCTRL_OUT_INIT_0>;
+                    label = "led-sig1";
+                    alias = "led-b";
+                    active_low;
+                };
+            }; /* mtsio */
+        }; /* overlay */
+    }; /* fragment@0 */
+};
diff --git a/mtcdt/ap1-xdot-0.0.dtso b/mtcdt/ap1-xdot-0.0.dtso
new file mode 100644
index 0000000..969f8b1
--- /dev/null
+++ b/mtcdt/ap1-xdot-0.0.dtso
@@ -0,0 +1,30 @@
+/*
+ * DTS overlay for MTCDT 0.0 hardware version.
+ */
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/dma/at91.h>
+#include <dt-bindings/pinctrl/at91.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/clock/at91.h>
+#define AT91_PINCTRL_OUT_INIT_0 (AT91_PINCTRL_OUTPUT|AT91_PINCTRL_OUTPUT_VAL(0))
+#define AT91_PINCTRL_OUT_INIT_1 (AT91_PINCTRL_OUTPUT|AT91_PINCTRL_OUTPUT_VAL(1))
+
+/ {
+    compatible = "atmel,at91sam9g25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
+    fragment@0 {
+        target-path = "/ahb/apb/pinctrl@fffff400";
+        __overlay__ {
+            mtac_xdot {
+                ap1 {
+                    reset {
+                        atmel,pins = <AT91_PIOB 12 AT91_PERIPH_GPIO AT91_PINCTRL_OUT_INIT_1>;
+                        label = "ap1-reset";
+                    }; /* Reset */
+                }; /* ap1 */
+            }; /* mtac_xdot */
+        }; /* overlay */
+    }; /* fragment@0 */
+};
diff --git a/mtcdt/ap2-xdot-0.0.dtso b/mtcdt/ap2-xdot-0.0.dtso
new file mode 100644
index 0000000..908e6ad
--- /dev/null
+++ b/mtcdt/ap2-xdot-0.0.dtso
@@ -0,0 +1,30 @@
+/*
+ * DTS overlay for MTCDT 0.0 hardware version.
+ */
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/dma/at91.h>
+#include <dt-bindings/pinctrl/at91.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/clock/at91.h>
+#define AT91_PINCTRL_OUT_INIT_0 (AT91_PINCTRL_OUTPUT|AT91_PINCTRL_OUTPUT_VAL(0))
+#define AT91_PINCTRL_OUT_INIT_1 (AT91_PINCTRL_OUTPUT|AT91_PINCTRL_OUTPUT_VAL(1))
+
+/ {
+    compatible = "atmel,at91sam9g25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
+    fragment@0 {
+        target-path = "/ahb/apb/pinctrl@fffff400";
+        __overlay__ {
+            mtac_xdot {
+                ap2 {
+                    reset {
+                        atmel,pins = <AT91_PIOB 13 AT91_PERIPH_GPIO AT91_PINCTRL_OUT_INIT_1>;
+                        label = "ap2-reset";
+                    }; /* Reset */
+                }; /* ap2 */
+            }; /* mtac_xdot */
+        }; /* overlay */
+    }; /* fragment@0 */
+};
diff --git a/mtcdt/mtcdt-0.0.dtso b/mtcdt/mtcdt-0.0.dtso
new file mode 100644
index 0000000..4d98fa4
--- /dev/null
+++ b/mtcdt/mtcdt-0.0.dtso
@@ -0,0 +1,60 @@
+/*
+ * DTS overlay for MTCDT 0.0 hardware version.
+ */
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/dma/at91.h>
+#include <dt-bindings/pinctrl/at91.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/clock/at91.h>
+#define AT91_PINCTRL_OUT_INIT_0 (AT91_PINCTRL_OUTPUT|AT91_PINCTRL_OUTPUT_VAL(0))
+#define AT91_PINCTRL_OUT_INIT_1 (AT91_PINCTRL_OUTPUT|AT91_PINCTRL_OUTPUT_VAL(1))
+
+/ {
+    compatible = "atmel,at91sam9g25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
+    fragment@0 {
+        target-path = "/ahb/apb/pinctrl@fffff400";
+        __overlay__ {
+            mts_io {
+                radio_reset {
+                    atmel,pins = <AT91_PIOC 3 AT91_PERIPH_GPIO AT91_PINCTRL_OUT_INIT_1>;
+                    label = "radio-reset";
+                    alias = "radio-power";
+                }; /* radio */
+                device_reset {
+                    atmel,pins = <AT91_PIOC 2 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
+                    label = "reset";
+                    active-low;
+                };
+                eth_reset {
+                    atmel,pins = <AT91_PIOC 4 AT91_PERIPH_GPIO AT91_PINCTRL_OUT_INIT_1>;
+                    label = "eth-reset";
+                }; /* eth */
+                ls_led {
+                    atmel,pins = <AT91_PIOA 14 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
+                    label = "led-ls";
+                    active_low;
+                };
+                status_led {
+                    atmel,pins = <AT91_PIOA 24 AT91_PERIPH_GPIO AT91_PINCTRL_OUT_INIT_0>;
+                    label = "led-status";
+                    active_low;
+                };
+                led5 {
+                    atmel,pins = <AT91_PIOA 25 AT91_PERIPH_GPIO AT91_PINCTRL_OUT_INIT_1>;
+                    label = "led-cd";
+                    alias = "led-a";
+                    active_low;
+                };
+                led1 {
+                    atmel,pins = <AT91_PIOA 26 AT91_PERIPH_GPIO AT91_PINCTRL_OUT_INIT_1>;
+                    label = "led-sig1";
+                    alias = "led-b";
+                    active_low;
+                };
+            }; /* mtsio */
+        }; /* overlay */
+    }; /* fragment@0 */
+};
diff --git a/mtcdt/mtcdt-gpios.0.0.dtso b/mtcdt/mtcdt-gpios.0.0.dtso
new file mode 100644
index 0000000..24b1332
--- /dev/null
+++ b/mtcdt/mtcdt-gpios.0.0.dtso
@@ -0,0 +1,60 @@
+/*
+ * DTS overlay for MTCDT 0.0 hardware version.
+ * Uses [name]-gpios from:
+ * https://www.kernel.org/doc/Documentation/devicetree/bindings/gpio/gpio.txt
+ */
+/dts-v1/;
+/plugin/;
+
+#include "at91sam9g25.dtsi"
+#include "at91sam9x5ek.dtsi"
+
+/ {
+    compatible = "atmel,at91sam9g25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
+    fragment@0 {
+        target-path = "/";
+        __overlay__ {
+            mts-io {
+		compatible = "mts,mts-io";
+                radio-reset {
+                    radio-reset-gpios = <&pioC 3 GPIO_ACTIVE_HIGH>;
+                    gpiof_out_init_high;
+                    line-name = "radio-reset";
+                    alias = "radio-power";
+                }; /* radio */
+                reset {
+                    reset-gpios = <&pioC 2 GPIO_ACTIVE_LOW>;
+                    gpiof_in;
+                    line-name = "reset";
+                };
+                eth-reset {
+                    eth-reset-gpios = <&pioC 4 GPIO_ACTIVE_HIGH>;
+                    gpiof_out_init_high;
+                    line-name = "eth-reset";
+                }; /* eth */
+                ls-led {
+                    ls-led-gpios = <&pioA 14 GPIO_ACTIVE_LOW>;
+                    gpiof_out_init_high;
+                    line-name = "led-ls";
+                };
+                status-led {
+                    status-led-gpios = <&pioA 24 GPIO_ACTIVE_LOW>;
+                    gpiof_out_init_high;
+                    line-name = "led-status";
+                };
+                led5 {
+                    led5-gpios = <&pioA 25 GPIO_ACTIVE_LOW>;
+                    gpiof_out_init_high;
+                    line-name = "led-cd";
+                    alias = "led-a";
+                };
+                led1 {
+                    led1-gpios = <&pioA 26 GPIO_ACTIVE_LOW>;
+                    gpiof_out_init_high;
+                    line-name = "led-sig1";
+                    alias = "led-b";
+                };
+            }; /* mtsio */
+        }; /* overlay */
+    }; /* fragment@0 */
+};
diff --git a/mtrv1/MTRV1-0.0-pps.dtso b/mtrv1/MTRV1-0.0-pps.dtso
new file mode 100644
index 0000000..b3e1591
--- /dev/null
+++ b/mtrv1/MTRV1-0.0-pps.dtso
@@ -0,0 +1,21 @@
+/*
+ * DTS file for Multi-Tech Systems MTRv1 Hardware
+ *
+ * Copyright (C) 2019 by Multi-Tech Systems,
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+    model = "Multi-Tech Systems MTRV1-0.0";
+    compatible = "atmel,at91sam9g25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
+    fragment@0 {
+        target-path = "/pps-0";
+        __overlay__ {
+            status = "okay";
+        };
+    }; /* fragment@0 */
+};
diff --git a/mtrv1/MTRV1-0.1-pps.dtso b/mtrv1/MTRV1-0.1-pps.dtso
new file mode 100644
index 0000000..ad90ba8
--- /dev/null
+++ b/mtrv1/MTRV1-0.1-pps.dtso
@@ -0,0 +1,21 @@
+/*
+ * DTS file for Multi-Tech Systems MTRv1 Hardware
+ *
+ * Copyright (C) 2019 by Multi-Tech Systems,
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+    model = "Multi-Tech Systems MTRV1-0.1";
+    compatible = "atmel,at91sam9g25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
+    fragment@0 {
+        target-path = "/pps-1";
+        __overlay__ {
+            status = "okay";
+        };
+    }; /* fragment@0 */
+};
diff --git a/mtrv1/MTRV1-0.2-pps.dtbo b/mtrv1/MTRV1-0.2-pps.dtbo
new file mode 120000
index 0000000..c4639fc
--- /dev/null
+++ b/mtrv1/MTRV1-0.2-pps.dtbo
@@ -0,0 +1 @@
+MTRV1-0.1-pps.dtbo
\ No newline at end of file