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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>
This commit is contained in:
Viresh Kumar
2012-03-23 00:17:43 +05:30
committed by Arnd Bergmann
parent 5fb00f965e
commit c5fa4fdcdb
24 changed files with 1222 additions and 486 deletions
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arch/arm/plat-spear/Kconfig
+2 -1
View File
@@ -9,9 +9,10 @@ choice
default ARCH_SPEAR3XX
config ARCH_SPEAR3XX
bool "SPEAr3XX"
bool "ST SPEAr3xx with Device Tree"
select ARM_VIC
select CPU_ARM926T
select USE_OF
help
Supports for ARM's SPEAR3XX family