1 files changed, 46 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/module.c b/drivers/gpu/nvgpu/common/linux/module.c
index 2e90fbe4..6b27c9f1 100644
--- a/drivers/gpu/nvgpu/common/linux/module.c
+++ b/drivers/gpu/nvgpu/common/linux/module.c
@@ -25,6 +25,8 @@
 #include <linux/reset.h>
 #include <linux/platform/tegra/common.h>
 #include <uapi/linux/nvgpu.h>
+#include <dt-bindings/soc/gm20b-fuse.h>
+#include <dt-bindings/soc/gp10b-fuse.h>
 
 #include <nvgpu/dma.h>
 #include <nvgpu/kmem.h>
@@ -994,6 +996,48 @@ static inline void set_gk20a(struct platform_device *pdev, struct gk20a *gk20a)
         gk20a_get_platform(&pdev->dev)->g = gk20a;
 }
 
+static int nvgpu_read_fuse_overrides(struct gk20a *g)
+{
+        struct device_node *np = dev_from_gk20a(g)->of_node;
+        u32 *fuses;
+        int count, i;
+
+        if (!np) /* may be pcie device */
+                return 0;
+
+        count = of_property_count_elems_of_size(np, "fuse-overrides", 8);
+        if (count <= 0)
+                return count;
+
+        fuses = nvgpu_kmalloc(g, sizeof(u32) * count * 2);
+        if (!fuses)
+                return -ENOMEM;
+        of_property_read_u32_array(np, "fuse-overrides", fuses, count * 2);
+        for (i = 0; i < count; i++) {
+                u32 fuse, value;
+
+                fuse = fuses[2 * i];
+                value = fuses[2 * i + 1];
+                switch (fuse) {
+                case GM20B_FUSE_OPT_TPC_DISABLE:
+                        g->tpc_fs_mask_user = ~value;
+                        break;
+#ifdef CONFIG_ARCH_TEGRA_18x_SOC
+                case GP10B_FUSE_OPT_ECC_EN:
+                        g->gr.t18x.fecs_feature_override_ecc_val = value;
+                        break;
+#endif
+                default:
+                        nvgpu_err(g, "ignore unknown fuse override %08x", fuse);
+                        break;
+                }
+        }
+
+        nvgpu_kfree(g, fuses);
+
+        return 0;
+}
+
 static int gk20a_probe(struct platform_device *dev)
 {
         struct nvgpu_os_linux *l;
@@ -1077,6 +1121,8 @@ static int gk20a_probe(struct platform_device *dev)
         if (err)
                 return err;
 
+        err = nvgpu_read_fuse_overrides(gk20a);
+
 #ifdef CONFIG_RESET_CONTROLLER
         platform->reset_control = devm_reset_control_get(&dev->dev, NULL);
         if (IS_ERR(platform->reset_control))