Tegra: memctrl_v2: config to enable SMMU device

This patch adds a config to the memory controller driver to enable SMMU
device init during boot. Tegra186 platforms keeps it enabled by default,
but future platforms might not support it.

Change-Id: Iebe1c60a25fc1cfb4c97a507e121d6685a49cb83
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

plat/nvidia/tegra/common/drivers/memctrl/memctrl_v2.c

@@ -511,8 +511,10 @@ void tegra_memctrl_setup(void)
 
 	INFO("Tegra Memory Controller (v2)\n");
 
+#if ENABLE_SMMU_DEVICE
 	/* Program the SMMU pagesize */
 	tegra_smmu_init();
+#endif
 
 	/* Program all the Stream ID overrides */
 	for (i = 0; i < num_overrides; i++)

plat/nvidia/tegra/soc/t186/plat_setup.c

@@ -104,8 +104,10 @@ static const mmap_region_t tegra_mmap[] = {
 			MT_DEVICE | MT_RW | MT_SECURE),
 	MAP_REGION_FLAT(TEGRA_ARM_ACTMON_CTR_BASE, 0x20000, /* 128KB - ARM/Denver */
 			MT_DEVICE | MT_RW | MT_SECURE),
+#if ENABLE_SMMU_DEVICE
 	MAP_REGION_FLAT(TEGRA_SMMU_BASE, 0x1000000, /* 64KB */
 			MT_DEVICE | MT_RW | MT_SECURE),
+#endif
 	{0}
 };
 

plat/nvidia/tegra/soc/t186/platform_t186.mk

@@ -41,6 +41,9 @@ $(eval $(call add_define,RELOCATE_TO_BL31_BASE))
 ENABLE_CHIP_VERIFICATION_HARNESS	:= 0
 $(eval $(call add_define,ENABLE_CHIP_VERIFICATION_HARNESS))
 
+ENABLE_SMMU_DEVICE			:= 1
+$(eval $(call add_define,ENABLE_SMMU_DEVICE))
+
 RESET_TO_BL31				:= 1
 
 PROGRAMMABLE_RESET_ADDRESS		:= 1