2 files changed, 18 insertions, 4 deletions

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 79eda8f5fea0..470432c8fd70 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -3172,9 +3172,16 @@ static int vc4_hdmi_init_resources(struct drm_device *drm,
 		DRM_ERROR("Failed to get HDMI state machine clock\n");
 		return PTR_ERR(vc4_hdmi->hsm_clock);
 	}
+
 	vc4_hdmi->audio_clock = vc4_hdmi->hsm_clock;
 	vc4_hdmi->cec_clock = vc4_hdmi->hsm_clock;
 
+	vc4_hdmi->hsm_rpm_clock = devm_clk_get(dev, "hdmi");
+	if (IS_ERR(vc4_hdmi->hsm_rpm_clock)) {
+		DRM_ERROR("Failed to get HDMI state machine clock\n");
+		return PTR_ERR(vc4_hdmi->hsm_rpm_clock);
+	}
+
 	return 0;
 }
 
@@ -3257,6 +3264,12 @@ static int vc5_hdmi_init_resources(struct drm_device *drm,
 		return PTR_ERR(vc4_hdmi->hsm_clock);
 	}
 
+	vc4_hdmi->hsm_rpm_clock = devm_clk_get(dev, "hdmi");
+	if (IS_ERR(vc4_hdmi->hsm_rpm_clock)) {
+		DRM_ERROR("Failed to get HDMI state machine clock\n");
+		return PTR_ERR(vc4_hdmi->hsm_rpm_clock);
+	}
+
 	vc4_hdmi->pixel_bvb_clock = devm_clk_get(dev, "bvb");
 	if (IS_ERR(vc4_hdmi->pixel_bvb_clock)) {
 		DRM_ERROR("Failed to get pixel bvb clock\n");
@@ -3320,7 +3333,7 @@ static int vc4_hdmi_runtime_suspend(struct device *dev)
 {
 	struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev);
 
-	clk_disable_unprepare(vc4_hdmi->hsm_clock);
+	clk_disable_unprepare(vc4_hdmi->hsm_rpm_clock);
 
 	return 0;
 }
@@ -3338,11 +3351,11 @@ static int vc4_hdmi_runtime_resume(struct device *dev)
 	 * its frequency while the power domain is active so that it
 	 * keeps its rate.
 	 */
-	ret = clk_set_min_rate(vc4_hdmi->hsm_clock, HSM_MIN_CLOCK_FREQ);
+	ret = clk_set_min_rate(vc4_hdmi->hsm_rpm_clock, HSM_MIN_CLOCK_FREQ);
 	if (ret)
 		return ret;
 
-	ret = clk_prepare_enable(vc4_hdmi->hsm_clock);
+	ret = clk_prepare_enable(vc4_hdmi->hsm_rpm_clock);
 	if (ret)
 		return ret;
 
@@ -3355,7 +3368,7 @@ static int vc4_hdmi_runtime_resume(struct device *dev)
 	 * case, it will lead to a silent CPU stall. Let's make sure we
 	 * prevent such a case.
 	 */
-	rate = clk_get_rate(vc4_hdmi->hsm_clock);
+	rate = clk_get_rate(vc4_hdmi->hsm_rpm_clock);
 	if (!rate) {
 		ret = -EINVAL;
 		goto err_disable_clk;
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
index db823efb2563..1ad8e8c377e2 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -172,6 +172,7 @@ struct vc4_hdmi {
 	struct clk *cec_clock;
 	struct clk *pixel_clock;
 	struct clk *hsm_clock;
+	struct clk *hsm_rpm_clock;
 	struct clk *audio_clock;
 	struct clk *pixel_bvb_clock;