Hi,
OMAP HWMOD currently does not have GPMC adapted to it.
We are facing a problem indirectly related to it in the case of
AM335X SoC. It can reuse GPMC code of OMAP except that base address
& IRQ# is different. But we get a kernel crash without
(at least) following change
-------------------------------------------------------------------
arm:omap:gpmc: am33xx base address
GPMC base address of AM335X SoC is same as that of OMAP44XX,
update it (eventhough AM33XX is a member of OMAP34XX family)
Without this change, Kernel would crash for AM335X
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index dfffbbf..4ee2e90 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -711,7 +711,10 @@ static int __init gpmc_init(void)
gpmc_irq = INT_34XX_GPMC_IRQ;
} else if (cpu_is_omap34xx()) {
ck = "gpmc_fck";
- l = OMAP34XX_GPMC_BASE;
+ if (cpu_is_am33xx())
+ l = OMAP44XX_GPMC_BASE;
+ else
+ l = OMAP34XX_GPMC_BASE;
gpmc_irq = INT_34XX_GPMC_IRQ;
} else if (cpu_is_omap44xx()) {
ck = "gpmc_ck";
-------------------------------------------------------------------
But the above is not sufficient, even the IRQ # has to be changed
And for that we need to feed the proper IRQ # too. Now if it was a
HWMOD device, we could have passed it in HWMOD database & it would
have been taken care. Other option is to have a new AM335X specific
IRQ header file (which, if my understanding is correct, we can't get
into mainline as HWMOD is present for OMAP & due to DT things)
HWMOD entries currently does contain GPMC, is it due to the reason that
GPMC is not yet adapted to omap_device / omap_hwmod or is there any
other reason for not having it in HWMOD (as GPMC not yet a driver?)
Regards
Afzal
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