This patch defines PRUSS, ECAP clocks, memory and IRQ resources
used by PRUSS UIO driver in DA850/AM18xx/OMAPL1-38 devices. UIO
It's OMAP-L138.Ok.
driver exports 64K I/O region of PRUSS, 128KB L3 RAM and 256KB
DDR buffer to user space. PRUSS has 8 host event interrupt lines
mapped to IRQ_DA8XX_EVTOUT0..7 of ARM9 INTC.These in conjunction
with shared memory can be used to implement IPC between ARM9 and
PRUSS.
Signed-off-by: Pratheesh Gangadhar<pratheesh@xxxxxx>
diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.cindex beda8a4..4ea3d1f 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -725,3 +725,76 @@ int __init da8xx_register_cpuidle(void)
return platform_device_register(&da8xx_cpuidle_device);
}
+static struct resource pruss_resources[] = {
+ [0] = {
+ .start = DA8XX_PRUSS_BASE,
+ .end = DA8XX_PRUSS_BASE + SZ_64K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = DA8XX_L3RAM_BASE,
+ .end = DA8XX_L3RAM_BASE + SZ_128K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [2] = {
+ .start = 0,
+ .end = SZ_256K - 1,
Huh? I don't see where it's filled...
The current use is only to indicate memory block size to the PRUSS UIO driver when we allocate DDR memory using dma_alloc_coherent.
sram_alloc is changed to use L3_RAM (128KB) instead of ARM RAM (8KB) in Mistral patch set - I need to follow the same convention> for L3 RAM as well if I need to align with that patch. Is there a better way to do this?