It is always present. It was documented as mandatory prior to
commit 90aeca875f8a ("dt-bindings: display: Convert etnaviv to
json-schema").

Signed-off-by: Lubomir Rintel <lkund...@v3.sk>

---
Changes since v1:
- Add this patch
---
 drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c 
b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index f303172c091d..798fdbc8ecdb 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -1796,7 +1796,7 @@ static int etnaviv_gpu_platform_probe(struct 
platform_device *pdev)
        if (IS_ERR(gpu->clk_bus))
                return PTR_ERR(gpu->clk_bus);
 
-       gpu->clk_core = devm_clk_get_optional(&pdev->dev, "core");
+       gpu->clk_core = devm_clk_get(&pdev->dev, "core");
        DBG("clk_core: %p", gpu->clk_core);
        if (IS_ERR(gpu->clk_core))
                return PTR_ERR(gpu->clk_core);
-- 
2.26.2

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