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ARM: SPEAr3xx: Add device-tree support to SPEAr3xx architecture
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This patch adds a generic target for SPEAr3xx machines that can be configured
via the device-tree. Currently the following devices are supported via the
devicetree:

- VIC interrupts
- PL011 UART
- PL061 GPIO
- PL110 CLCD
- SP805 WDT
- Synopsys DW I2C
- Synopsys DW ethernet
- ST FSMC-NAND
- ST SPEAR-SMI
- ST SPEAR-KEYBOARD
- ST SPEAR-RTC
- ARASAN SDHCI-SPEAR
- SPEAR-EHCI
- SPEAR-OHCI

Other peripheral devices will follow in later patches.

This also removes IO_ADDRESS macro and creates 16 MB static mappings instead of
4K for individual peripherals. This is done to have efficient TLB lookup for any
I/O windows that are located closely together. ioremap() on this range will
return this mapping only instead of creating another.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
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Viresh Kumar authored and Arnd Bergmann committed Apr 22, 2012
1 parent 5fb00f9 commit c5fa4fd
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13 changes: 7 additions & 6 deletions Documentation/arm/SPEAr/overview.txt
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Expand Up @@ -17,14 +17,14 @@ Introduction
SPEAr (Platform)
- SPEAr3XX (3XX SOC series, based on ARM9)
- SPEAr300 (SOC)
- SPEAr300_EVB (Evaluation Board)
- SPEAr300 Evaluation Board
- SPEAr310 (SOC)
- SPEAr310_EVB (Evaluation Board)
- SPEAr310 Evaluation Board
- SPEAr320 (SOC)
- SPEAr320_EVB (Evaluation Board)
- SPEAr320 Evaluation Board
- SPEAr6XX (6XX SOC series, based on ARM9)
- SPEAr600 (SOC)
- SPEAr600_EVB (Evaluation Board)
- SPEAr600 Evaluation Board
- SPEAr13XX (13XX SOC series, based on ARM CORTEXA9)
- SPEAr1300 (SOC)

Expand All @@ -51,10 +51,11 @@ Introduction
Common file for machines of spear3xx family is mach-spear3xx/spear3xx.c and for
spear6xx is mach-spear6xx/spear6xx.c. mach-spear* also contain soc/machine
specific files, like spear300.c, spear310.c, spear320.c and spear600.c.
mach-spear* also contains board specific files for each machine type.
mach-spear* doesn't contains board specific files as they fully support
Flattened Device Tree.


Document Author
---------------

Viresh Kumar, (c) 2010 ST Microelectronics
Viresh Kumar <viresh.kumar@st.com>, (c) 2010-2012 ST Microelectronics
18 changes: 18 additions & 0 deletions Documentation/devicetree/bindings/arm/spear.txt
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Expand Up @@ -6,3 +6,21 @@ Boards with the ST SPEAr600 SoC shall have the following properties:
Required root node property:

compatible = "st,spear600";

Boards with the ST SPEAr300 SoC shall have the following properties:

Required root node property:

compatible = "st,spear300";

Boards with the ST SPEAr310 SoC shall have the following properties:

Required root node property:

compatible = "st,spear310";

Boards with the ST SPEAr320 SoC shall have the following properties:

Required root node property:

compatible = "st,spear320";
179 changes: 179 additions & 0 deletions arch/arm/boot/dts/spear300-evb.dts
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@@ -0,0 +1,179 @@
/*
* DTS file for SPEAr300 Evaluation Baord
*
* Copyright 2012 Viresh Kumar <viresh.kumar@st.com>
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/

/dts-v1/;
/include/ "spear300.dtsi"

/ {
model = "ST SPEAr300 Evaluation Board";
compatible = "st,spear300-evb", "st,spear300";
#address-cells = <1>;
#size-cells = <1>;

memory {
reg = <0 0x40000000>;
};

ahb {
clcd@60000000 {
status = "okay";
};

fsmc: flash@94000000 {
status = "okay";
};

gmac: eth@e0800000 {
status = "okay";
};

sdhci@70000000 {
int-gpio = <&gpio1 0 0>;
power-gpio = <&gpio1 2 1>;
status = "okay";
};

smi: flash@fc000000 {
status = "okay";
};

spi0: spi@d0100000 {
status = "okay";
};

ehci@e1800000 {
status = "okay";
};

ohci@e1900000 {
status = "okay";
};

ohci@e2100000 {
status = "okay";
};

apb {
gpio0: gpio@fc980000 {
status = "okay";
};

gpio1: gpio@a9000000 {
status = "okay";
};

i2c0: i2c@d0180000 {
status = "okay";
};

kbd@a0000000 {
linux,keymap = < 0x00010000
0x00020100
0x00030200
0x00040300
0x00050400
0x00060500
0x00070600
0x00080700
0x00090800
0x000a0001
0x000c0101
0x000d0201
0x000e0301
0x000f0401
0x00100501
0x00110601
0x00120701
0x00130801
0x00140002
0x00150102
0x00160202
0x00170302
0x00180402
0x00190502
0x001a0602
0x001b0702
0x001c0802
0x001d0003
0x001e0103
0x001f0203
0x00200303
0x00210403
0x00220503
0x00230603
0x00240703
0x00250803
0x00260004
0x00270104
0x00280204
0x00290304
0x002a0404
0x002b0504
0x002c0604
0x002d0704
0x002e0804
0x002f0005
0x00300105
0x00310205
0x00320305
0x00330405
0x00340505
0x00350605
0x00360705
0x00370805
0x00380006
0x00390106
0x003a0206
0x003b0306
0x003c0406
0x003d0506
0x003e0606
0x003f0706
0x00400806
0x00410007
0x00420107
0x00430207
0x00440307
0x00450407
0x00460507
0x00470607
0x00480707
0x00490807
0x004a0008
0x004b0108
0x004c0208
0x004d0308
0x004e0408
0x004f0508
0x00500608
0x00510708
0x00520808 >;
autorepeat;
st,mode = <0>;
status = "okay";
};

rtc@fc900000 {
status = "okay";
};

serial@d0000000 {
status = "okay";
};

wdt@fc880000 {
status = "okay";
};
};
};
};
72 changes: 72 additions & 0 deletions arch/arm/boot/dts/spear300.dtsi
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/*
* DTS file for SPEAr300 SoC
*
* Copyright 2012 Viresh Kumar <viresh.kumar@st.com>
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/

/include/ "spear3xx.dtsi"

/ {
ahb {
#address-cells = <1>;
#size-cells = <1>;
compatible = "simple-bus";
ranges = <0x60000000 0x60000000 0x50000000
0xd0000000 0xd0000000 0x30000000>;

clcd@60000000 {
compatible = "arm,clcd-pl110", "arm,primecell";
reg = <0x60000000 0x1000>;
interrupts = <30>;
status = "disabled";
};

fsmc: flash@94000000 {
compatible = "st,spear600-fsmc-nand";
#address-cells = <1>;
#size-cells = <1>;
reg = <0x94000000 0x1000 /* FSMC Register */
0x80000000 0x0010>; /* NAND Base */
reg-names = "fsmc_regs", "nand_data";
st,ale-off = <0x20000>;
st,cle-off = <0x10000>;
status = "disabled";
};

sdhci@70000000 {
compatible = "st,sdhci-spear";
reg = <0x70000000 0x100>;
interrupts = <1>;
status = "disabled";
};

apb {
#address-cells = <1>;
#size-cells = <1>;
compatible = "simple-bus";
ranges = <0xa0000000 0xa0000000 0x10000000
0xd0000000 0xd0000000 0x30000000>;

gpio1: gpio@a9000000 {
#gpio-cells = <2>;
compatible = "arm,pl061", "arm,primecell";
gpio-controller;
reg = <0xa9000000 0x1000>;
status = "disabled";
};

kbd@a0000000 {
compatible = "st,spear300-kbd";
reg = <0xa0000000 0x1000>;
status = "disabled";
};
};
};
};
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