[PATCH v5 4/7] drm/verisilicon: make axi and ahb clocks optional

[Joey Lu <a0987203069@gmail.com>]

The Nuvoton MA35D1 SoC integrates a DCUltraLite display controller whose
AXI and AHB bus clocks share a single gate enable bit with the display
core clock, so the clock driver does not expose them separately. This
patch makes the axi and ahb clocks optional in the probe.

Signed-off-by: Joey Lu <a0987203069@gmail.com>
---
 drivers/gpu/drm/verisilicon/vs_dc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/verisilicon/vs_dc.c b/drivers/gpu/drm/verisilicon/vs_dc.c
index 9729b693d360..fd1f5fe67a68 100644
--- a/drivers/gpu/drm/verisilicon/vs_dc.c
+++ b/drivers/gpu/drm/verisilicon/vs_dc.c
@@ -90,13 +90,13 @@ static int vs_dc_probe(struct platform_device *pdev)
 		return PTR_ERR(dc->core_clk);
 	}
 
-	dc->axi_clk = devm_clk_get_enabled(dev, "axi");
+	dc->axi_clk = devm_clk_get_optional_enabled(dev, "axi");
 	if (IS_ERR(dc->axi_clk)) {
 		dev_err(dev, "can't get axi clock\n");
 		return PTR_ERR(dc->axi_clk);
 	}
 
-	dc->ahb_clk = devm_clk_get_enabled(dev, "ahb");
+	dc->ahb_clk = devm_clk_get_optional_enabled(dev, "ahb");
 	if (IS_ERR(dc->ahb_clk)) {
 		dev_err(dev, "can't get ahb clock\n");
 		return PTR_ERR(dc->ahb_clk);
-- 
2.43.0