ARM: tegra: add Tegra124 SoC support

Add Tegra124 SoC support that base on CortexA15MP Core. And enable the
SMP function that can re-use the same procedure with Tegra114.
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

arch/arm/mach-tegra/Kconfig

@@ -61,6 +61,14 @@ config ARCH_TEGRA_114_SOC
 	  Support for NVIDIA Tegra T114 processor family, based on the
 	  ARM CortexA15MP CPU
 
+config ARCH_TEGRA_124_SOC
+	bool "Enable support for Tegra124 family"
+	select ARM_L1_CACHE_SHIFT_6
+	select HAVE_ARM_ARCH_TIMER
+	help
+	  Support for NVIDIA Tegra T124 processor family, based on the
+	  ARM CortexA15MP CPU
+
 config TEGRA_AHB
 	bool "Enable AHB driver for NVIDIA Tegra SoCs"
 	default y

arch/arm/mach-tegra/fuse.h

@@ -29,6 +29,7 @@
 #define TEGRA20		0x20
 #define TEGRA30		0x30
 #define TEGRA114	0x35
+#define TEGRA124	0x40
 
 #ifndef __ASSEMBLY__
 enum tegra_revision {

arch/arm/mach-tegra/platsmp.c

@@ -176,6 +176,8 @@ static int tegra_boot_secondary(unsigned int cpu,
 		return tegra30_boot_secondary(cpu, idle);
 	if (IS_ENABLED(CONFIG_ARCH_TEGRA_114_SOC) && tegra_chip_id == TEGRA114)
 		return tegra114_boot_secondary(cpu, idle);
+	if (IS_ENABLED(CONFIG_ARCH_TEGRA_124_SOC) && tegra_chip_id == TEGRA124)
+		return tegra114_boot_secondary(cpu, idle);
 
 	return -EINVAL;
 }

arch/arm/mach-tegra/tegra.c

@@ -181,6 +181,7 @@ static void __init tegra_dt_init_late(void)
 }
 
 static const char * const tegra_dt_board_compat[] = {
+	"nvidia,tegra124",
 	"nvidia,tegra114",
 	"nvidia,tegra30",
 	"nvidia,tegra20",