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Subject[PATCH 4/6] arm/tegra: implement support for tegra30
Date
From: Peter De Schrijver <pdeschrijver@nvidia.com>

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
---
arch/arm/mach-tegra/Kconfig | 18 +++++++++++++-----
arch/arm/mach-tegra/board-dt.c | 1 +
arch/arm/mach-tegra/board.h | 1 +
arch/arm/mach-tegra/common.c | 12 +++++++++---
4 files changed, 24 insertions(+), 8 deletions(-)
diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index 91aff7c..21c99f9 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -2,11 +2,8 @@ if ARCH_TEGRA

comment "NVIDIA Tegra options"

-choice
- prompt "Select Tegra processor family for target system"
-
config ARCH_TEGRA_2x_SOC
- bool "Tegra 2 family"
+ bool "Enable support for Tegra20 family"
select CPU_V7
select ARM_GIC
select ARCH_REQUIRE_GPIOLIB
@@ -17,7 +14,18 @@ config ARCH_TEGRA_2x_SOC
Support for NVIDIA Tegra AP20 and T20 processors, based on the
ARM CortexA9MP CPU and the ARM PL310 L2 cache controller

-endchoice
+config ARCH_TEGRA_3x_SOC
+ bool "Enable support for Tegra30 family"
+ select CPU_V7
+ select ARM_GIC
+ select ARCH_REQUIRE_GPIOLIB
+ select USB_ARCH_HAS_EHCI if USB_SUPPORT
+ select USB_ULPI if USB_SUPPORT
+ select USB_ULPI_VIEWPORT if USB_SUPPORT
+ select USE_OF
+ help
+ Support for NVIDIA Tegra T30 processorfamily, based on the
+ ARM CortexA9MP CPU and the ARM PL310 L2 cache controller

config TEGRA_PCI
bool "PCI Express support"
diff --git a/arch/arm/mach-tegra/board-dt.c b/arch/arm/mach-tegra/board-dt.c
index 9130037..01dc31a 100644
--- a/arch/arm/mach-tegra/board-dt.c
+++ b/arch/arm/mach-tegra/board-dt.c
@@ -124,6 +124,7 @@ static struct {
void (*init)(void);
} early_init[] __initdata = {
{ "nvidia,tegra20", tegra20_init_early },
+ { "nvidia,tegra30", tegra30_init_early },
};

static void __init tegra_init_early(void)
diff --git a/arch/arm/mach-tegra/board.h b/arch/arm/mach-tegra/board.h
index b86cdab..708b330a 100644
--- a/arch/arm/mach-tegra/board.h
+++ b/arch/arm/mach-tegra/board.h
@@ -24,6 +24,7 @@
#include <linux/types.h>

void __init tegra20_init_early(void);
+void __init tegra30_init_early(void);
void __init tegra_map_common_io(void);
void __init tegra_init_irq(void);
void __init tegra_init_clock(void);
diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c
index 8553fde..d0ed0b1 100644
--- a/arch/arm/mach-tegra/common.c
+++ b/arch/arm/mach-tegra/common.c
@@ -61,7 +61,7 @@ static __initdata struct tegra_clk_init_table tegra20_clk_init_table[] = {
{ NULL, NULL, 0, 0},
};

-static void __init tegra_init_cache(void)
+static void __init tegra_init_cache(u32 prefetch_ctrl)
{
#ifdef CONFIG_CACHE_L2X0
void __iomem *p = IO_ADDRESS(TEGRA_ARM_PERIF_BASE) + 0x3000;
@@ -69,7 +69,7 @@ static void __init tegra_init_cache(void)

writel_relaxed(0x331, p + L2X0_TAG_LATENCY_CTRL);
writel_relaxed(0x441, p + L2X0_DATA_LATENCY_CTRL);
- writel(2, p + L2X0_PREFETCH_CTRL);
+ writel(prefetch_ctrl, p + L2X0_PREFETCH_CTRL);

aux_ctrl = readl(p + L2X0_CACHE_TYPE);
aux_ctrl = (aux_ctrl & 0x700) << (17-8);
@@ -85,5 +85,11 @@ void __init tegra20_init_early(void)
tegra_init_fuse();
tegra_init_clock();
tegra_clk_init_from_table(tegra20_clk_init_table);
- tegra_init_cache();
+ tegra_init_cache(2);
+}
+
+void __init tegra30_init_early(void)
+{
+ /* Enable PL310 double line fill feature. */
+ tegra_init_cache(1<<30);
}
--
1.7.7.rc0.72.g4b5ea.dirty


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