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ARM: tegra: Tegra30 speedo-based process identification

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This patch adds speedo-based process identification support for Tegra30.

Signed-off-by: Danny Huang <dahuang@nvidia.com>
[swarren s/Tegra3/Tegra30/ in log print,
s/T30/Tegra30/ in commit description]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Danny Huang
2012-11-15 15:42:34 +08:00
committed by Stephen Warren
parent 25cd5a3914
commit f8ddda713b
4 changed files with 309 additions and 2 deletions
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11
arch/arm/mach-tegra/fuse.c
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@@ -30,11 +30,13 @@
#define FUSE_SKU_INFO 0x110
#define TEGRA20_FUSE_SPARE_BIT 0x200
#define TEGRA30_FUSE_SPARE_BIT 0x244
int tegra_sku_id;
int tegra_cpu_process_id;
int tegra_core_process_id;
int tegra_chip_id;
int tegra_cpu_speedo_id; /* only exist in Tegra30 and later */
int tegra_soc_speedo_id;
enum tegra_revision tegra_revision;
@@ -120,13 +122,18 @@ void tegra_init_fuse(void)
id = readl_relaxed(IO_ADDRESS(TEGRA_APB_MISC_BASE) + 0x804);
tegra_chip_id = (id >> 8) & 0xff;
tegra_fuse_spare_bit = TEGRA20_FUSE_SPARE_BIT;
switch (tegra_chip_id) {
case TEGRA20:
tegra_fuse_spare_bit = TEGRA20_FUSE_SPARE_BIT;
tegra_init_speedo_data = &tegra20_init_speedo_data;
break;
case TEGRA30:
tegra_fuse_spare_bit = TEGRA30_FUSE_SPARE_BIT;
tegra_init_speedo_data = &tegra30_init_speedo_data;
break;
default:
pr_warn("Tegra: unknown chip id %d\n", tegra_chip_id);
tegra_fuse_spare_bit = TEGRA20_FUSE_SPARE_BIT;
tegra_init_speedo_data = &tegra_get_process_id;
}