Hi Geert,
I'll pull this into my OpenRISC tree now as-is, but there's a couple of
things that need sorting out before this can be upstreamed... see below.
Thanks,
Jonas
On 11/09/2013 09:37 PM, Geert Uytterhoeven wrote:
Add a DTS and defconfig for the Terasic DE0-Nano Development and Education
Board running ORPSoC. This board contains an Altera Cyclone IV FPGA with
support chips and I/O.
The DTS was derived from published versions by Kevin Mehall and Marek
Czerski.
Signed-off-by: Geert Uytterhoeven <ge...@linux-m68k.org>
Cc: Kevin Mehall <cont...@kevinmehall.net>
Cc: Marek Czerski <ma.czer...@gmail.com>
---
Notable changes:
- Change flash0 to spansion,s25sl064p, due to kernel message
m25p80 spi32766.0: found s25sl064p, expected m25p10
- Use reg-shift instead of regstep for i2c0, due to kernel message
ocores-i2c a0000000.ocores: regstep property deprecated, use reg-shift
arch/openrisc/boot/dts/de0_nano.dts | 158 ++++++++++++++++++++++++++++++
arch/openrisc/configs/de0_nano_defconfig | 86 ++++++++++++++++
2 files changed, 244 insertions(+)
create mode 100644 arch/openrisc/boot/dts/de0_nano.dts
create mode 100644 arch/openrisc/configs/de0_nano_defconfig
diff --git a/arch/openrisc/boot/dts/de0_nano.dts
b/arch/openrisc/boot/dts/de0_nano.dts
new file mode 100644
index 000000000000..42f91b5184d9
--- /dev/null
+++ b/arch/openrisc/boot/dts/de0_nano.dts
@@ -0,0 +1,158 @@
+/dts-v1/;
+/ {
+ compatible = "opencores,de0_nano";
This should probably be "altera,de0_nano". We also need to put a
version number of some kind on this thing. How are the de0_nano boards
versioned?
+ #address-cells = <1>;
+ #size-cells = <1>;
+ interrupt-parent = <&pic>;
+
+ chosen {
+ bootargs = "console=uart,mmio,0x90000000,115200";
+ };
+
+ memory@0 {
+ device_type = "memory";
+ reg = <0x00000000 0x02000000>;
+ };
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ cpu@0 {
+ compatible = "opencores,or1200-rtlsvn481";
+ reg = <0>;
+ clock-frequency = <50000000>;
+ };
+ };
+
+ /*
+ * OR1K PIC is built into CPU and accessed via special purpose
+ * registers. It is not addressable and, hence, has no 'reg'
+ * property.
+ */
+ pic: pic {
+ compatible = "opencores,or1k-pic";
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ };
+
+ serial0: serial@90000000 {
+ compatible = "opencores,uart16550-rtlsvn105", "ns16550a";
+ reg = <0x90000000 0x100>;
+ interrupts = <2>;
+ clock-frequency = <50000000>;
+ };
+
+ i2c0: ocores@a0000000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "opencores,i2c-ocores";
Version number needed. OpenCores wanted "projectname-rtlsvn###" where
### is the SVN commit number of the RTL directory in the project's
source repository.
+ reg = <0xa0000000 0x8>;
+ interrupts = <10>;
+ clock-frequency = <50000000>;
+
+ reg-shift = <0>; /* 8 bit registers */
+ reg-io-width = <1>; /* 8 bit read/write */
+
+ adxl34x@1d {
+ compatible = "adxl34x";
+ reg = <0x1d>;
+ interrupts = <26>;
+ };
+ eeprom@50 {
+ compatible = "at24,24c02";
+ reg = <0x50>;
+ pagesize = <8>;
+ };
+ };
+
+ spi0: spi0@b0000000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "opencores,spi-simple";
Version number.
+ reg = <0xb0000000 0x5>;
+
+ flash0: mtd@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "spansion,s25sl064p";
+ reg = <0>;
+ spi-max-frequency = <40000000>;
+ m25p,fast-read;
+
+ partition@0 {
+ label = "FPGA image";
+ reg = <0x00000000 0x000b0000>;
+ read-only;
+ };
+ partition@b0000 {
+ label = "bootloader";
+ reg = <0x000b0000 0x00050000>;
+ read-only;
+ };
+ partition@100000 {
+ label = "free space";
+ reg = <0x00100000 0x00700000>;
+ };
+ };
+ };
+
+ spi1: spi1@b1000000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "opencores,spi-simple";
Version number needed. OpenCores wanted "projectname-rtlsvn###" where
### is the SVN commit number of the RTL directory in the project's
source repository.
+ reg = <0xb1000000 0x5>;
+
+ adc@0 {
+ compatible = "adcxx,adcxx8s";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ };
+ };
+
+ gpio0: gpio@91000000 {
+ compatible = "opencores,jbtrivial";
There's no project called 'jbtrivial' at OpenCores. Should this be
"linux,jbtrivial" to indicate that this refers to a Linux driver?
+ reg = <0x91000000 0x2>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ xlnx,data-offset = <0>;
+ xlnx,tri-offset = <1>;
+ xlnx,gpio-width = <8>;
Yuck... I wrote this driver with a similar driver for a Xilinx part as a
starting point. Apparently I left the Xilenx (xlnx) tags in there for
the device properties. We can't really have it like this, though.
Like I mentioned earlier, I'd like to see this thing disappear
altogether and be replaced with gpio-generic.
/Jonas
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