soc/tegra: fuse: Add Tegra186 support

Tegra210 and Tegra186 are mostly compatible from a fuses point of view.
However, speedo support is implemented in the BPMP firmware, hence the
implementation needs to be skipped in the fuses driver.

Signed-off-by: Timo Alho <talho@nvidia.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
[treding@nvidia.com: reword commit message]
Signed-off-by: Thierry Reding <treding@nvidia.com>

3 files changed, 26 insertions, 2 deletions

diff --git a/drivers/soc/tegra/fuse/fuse-tegra.c b/drivers/soc/tegra/fuse/fuse-tegra.c
index b7c552e3133c..d7ccfee51b1a 100644
--- a/drivers/soc/tegra/fuse/fuse-tegra.c
+++ b/drivers/soc/tegra/fuse/fuse-tegra.c
@@ -103,6 +103,9 @@ static struct tegra_fuse *fuse = &(struct tegra_fuse) {
 };
 
 static const struct of_device_id tegra_fuse_match[] = {
+#ifdef CONFIG_ARCH_TEGRA_186_SOC
+        { .compatible = "nvidia,tegra186-efuse", .data = &tegra186_fuse_soc },
+#endif
 #ifdef CONFIG_ARCH_TEGRA_210_SOC
         { .compatible = "nvidia,tegra210-efuse", .data = &tegra210_fuse_soc },
 #endif
diff --git a/drivers/soc/tegra/fuse/fuse-tegra30.c b/drivers/soc/tegra/fuse/fuse-tegra30.c
index 882607bcaa6c..497eb044095f 100644
--- a/drivers/soc/tegra/fuse/fuse-tegra30.c
+++ b/drivers/soc/tegra/fuse/fuse-tegra30.c
@@ -46,7 +46,8 @@
     defined(CONFIG_ARCH_TEGRA_114_SOC) || \
     defined(CONFIG_ARCH_TEGRA_124_SOC) || \
     defined(CONFIG_ARCH_TEGRA_132_SOC) || \
-    defined(CONFIG_ARCH_TEGRA_210_SOC)
+    defined(CONFIG_ARCH_TEGRA_210_SOC) || \
+    defined(CONFIG_ARCH_TEGRA_186_SOC)
 static u32 tegra30_fuse_read_early(struct tegra_fuse *fuse, unsigned int offset)
 {
         return readl_relaxed(fuse->base + FUSE_BEGIN + offset);
@@ -98,7 +99,10 @@ static void __init tegra30_fuse_init(struct tegra_fuse *fuse)
         fuse->read = tegra30_fuse_read;
 
         tegra_init_revision();
-        fuse->soc->speedo_init(&tegra_sku_info);
+
+        if (fuse->soc->speedo_init)
+                fuse->soc->speedo_init(&tegra_sku_info);
+
         tegra30_fuse_add_randomness();
 }
 #endif
@@ -158,3 +162,16 @@ const struct tegra_fuse_soc tegra210_fuse_soc = {
         .info = &tegra210_fuse_info,
 };
 #endif
+
+#if defined(CONFIG_ARCH_TEGRA_186_SOC)
+static const struct tegra_fuse_info tegra186_fuse_info = {
+        .read = tegra30_fuse_read,
+        .size = 0x300,
+        .spare = 0x280,
+};
+
+const struct tegra_fuse_soc tegra186_fuse_soc = {
+        .init = tegra30_fuse_init,
+        .info = &tegra186_fuse_info,
+};
+#endif
diff --git a/drivers/soc/tegra/fuse/fuse.h b/drivers/soc/tegra/fuse/fuse.h
index 10c2076d5089..f355b9d54915 100644
--- a/drivers/soc/tegra/fuse/fuse.h
+++ b/drivers/soc/tegra/fuse/fuse.h
@@ -105,4 +105,8 @@ extern const struct tegra_fuse_soc tegra124_fuse_soc;
 extern const struct tegra_fuse_soc tegra210_fuse_soc;
 #endif
 
+#ifdef CONFIG_ARCH_TEGRA_186_SOC
+extern const struct tegra_fuse_soc tegra186_fuse_soc;
+#endif
+
 #endif