davinci: da8xx: Add base DA830/OMAP-L137 SoC support
The da830/omap l137 is a new SoC from TI that is similar
to the davinci line. Since its so similar to davinci,
put the support for the da830 in the same directory as
the davinci code.
There are differences, however. Some of those differences
prevent support for davinci and da830 platforms to work
in the same kernel binary. Those differences are:
1) Different physical address for RAM. This is relevant
to Makefile.boot addresses and PHYS_OFFSET. The
Makefile.boot issue isn't truly a kernel issue but
it means u-boot won't work with a uImage including
both architectures. The PHYS_OFFSET issue is
addressed by the "Allow for runtime-determined
PHYS_OFFSET" patch by Lennert Buytenhek but it
hasn't been accepted yet.
2) Different uart addresses. This is only an issue
for the 'addruart' assembly macro when CONFIG_DEBUG_LL
is enabled. Since the code in that macro is called
so early (e.g., by _error_p in kernel/head.S when
the processor lookup fails), we can't determine what
platform the kernel is running on at runtime to use
the correct uart address.
These areas have compile errors intentionally inserted
to indicate to the builder they're doing something wrong.
A new config variable, CONFIG_ARCH_DAVINCI_DMx, is added
to distinguish between a true davinci architecture and
the da830 architecture.
Note that the da830 currently has an issue with writeback
data cache so CONFIG_CPU_DCACHE_WRITETHROUGH should be
enabled when building a da830 kernel.
Additional generalizations for future SoCs in the da8xx family done by
Sudhakar Rajashekhara and Sekhar Nori.
Signed-off-by: Steve Chen <schen@mvista.com>
Signed-off-by: Mikhail Cherkashin <mcherkashin@ru.mvista.com>
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Cc: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Cc: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
diff --git a/arch/arm/mach-davinci/include/mach/psc.h b/arch/arm/mach-davinci/include/mach/psc.h
index 2bb414b..6b9621d 100644
--- a/arch/arm/mach-davinci/include/mach/psc.h
+++ b/arch/arm/mach-davinci/include/mach/psc.h
@@ -136,6 +136,47 @@
#define DM646X_LPSC_TIMER1 35
#define DM646X_LPSC_ARM_INTC 45
+/* PSC0 defines */
+#define DA8XX_LPSC0_TPCC 0
+#define DA8XX_LPSC0_TPTC0 1
+#define DA8XX_LPSC0_TPTC1 2
+#define DA8XX_LPSC0_EMIF25 3
+#define DA8XX_LPSC0_SPI0 4
+#define DA8XX_LPSC0_MMC_SD 5
+#define DA8XX_LPSC0_AINTC 6
+#define DA8XX_LPSC0_ARM_RAM_ROM 7
+#define DA8XX_LPSC0_SECU_MGR 8
+#define DA8XX_LPSC0_UART0 9
+#define DA8XX_LPSC0_SCR0_SS 10
+#define DA8XX_LPSC0_SCR1_SS 11
+#define DA8XX_LPSC0_SCR2_SS 12
+#define DA8XX_LPSC0_DMAX 13
+#define DA8XX_LPSC0_ARM 14
+#define DA8XX_LPSC0_GEM 15
+
+/* PSC1 defines */
+#define DA8XX_LPSC1_USB20 1
+#define DA8XX_LPSC1_USB11 2
+#define DA8XX_LPSC1_GPIO 3
+#define DA8XX_LPSC1_UHPI 4
+#define DA8XX_LPSC1_CPGMAC 5
+#define DA8XX_LPSC1_EMIF3C 6
+#define DA8XX_LPSC1_McASP0 7
+#define DA830_LPSC1_McASP1 8
+#define DA830_LPSC1_McASP2 9
+#define DA8XX_LPSC1_SPI1 10
+#define DA8XX_LPSC1_I2C 11
+#define DA8XX_LPSC1_UART1 12
+#define DA8XX_LPSC1_UART2 13
+#define DA8XX_LPSC1_LCDC 16
+#define DA8XX_LPSC1_PWM 17
+#define DA8XX_LPSC1_ECAP 20
+#define DA830_LPSC1_EQEP 21
+#define DA8XX_LPSC1_SCR_P0_SS 24
+#define DA8XX_LPSC1_SCR_P1_SS 25
+#define DA8XX_LPSC1_CR_P3_SS 26
+#define DA8XX_LPSC1_L3_CBA_RAM 31
+
extern int davinci_psc_is_clk_active(unsigned int ctlr, unsigned int id);
extern void davinci_psc_config(unsigned int domain, unsigned int ctlr,
unsigned int id, char enable);