soc/tegra: Add efuse driver for Tegra

Implement fuse driver for Tegra20, Tegra30, Tegra114 and Tegra124. This
replaces functionality previously provided in arch/arm/mach-tegra, which
is removed in this patch.

While at it, move the only user of the global tegra_revision variable
over to tegra_sku_info.revision and export tegra_fuse_readl() to allow
drivers to read calibration fuses.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 19 insertions, 1 deletions

diff --git a/include/soc/tegra/fuse.h b/include/soc/tegra/fuse.h
index 822eb348e107..51ac804deba5 100644
--- a/include/soc/tegra/fuse.h
+++ b/include/soc/tegra/fuse.h
@@ -22,6 +22,9 @@
 #define TEGRA114        0x35
 #define TEGRA124        0x40
 
+#define TEGRA_FUSE_SKU_CALIB_0  0xf0
+#define TEGRA30_FUSE_SATA_CALIB 0x124
+
 #ifndef __ASSEMBLY__
 
 u32 tegra_read_chipid(void);
@@ -37,11 +40,26 @@ enum tegra_revision {
         TEGRA_REVISION_MAX,
 };
 
+struct tegra_sku_info {
+        int sku_id;
+        int cpu_process_id;
+        int cpu_speedo_id;
+        int cpu_speedo_value;
+        int cpu_iddq_value;
+        int core_process_id;
+        int soc_speedo_id;
+        int gpu_speedo_id;
+        int gpu_process_id;
+        int gpu_speedo_value;
+        enum tegra_revision revision;
+};
+
 u32 tegra_read_straps(void);
 u32 tegra_read_chipid(void);
 void tegra_init_fuse(void);
+int tegra_fuse_readl(unsigned long offset, u32 *value);
 
-extern enum tegra_revision tegra_revision;
+extern struct tegra_sku_info tegra_sku_info;
 
 #if defined(CONFIG_TEGRA20_APB_DMA)
 int tegra_apb_readl_using_dma(unsigned long offset, u32 *value);