[PATCH v2 6/8] drm/sun4i: hdmi: Use the common TMDS char rate constant

From: Javier Martinez Canillas

Date: Wed May 20 2026 - 11:08:37 EST


Replace the 165000000 magic number with the shared constant defined
in the <linux/hdmi.h> header.

The old comment referenced "HDMI <= 1.2" but 165 MHz is actually
the maximum TMDS character rate defined by the HDMI 1.0 spec.

Suggested-by: Maxime Ripard <mripard@xxxxxxxxxx>
Signed-off-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>
Reviewed-by: Chen-Yu Tsai <wens@xxxxxxxxxx>
---

(no changes since v1)

drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
index 07e2afcb4f95..74c7c3720ba8 100644
--- a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
@@ -189,8 +189,8 @@ sun4i_hdmi_connector_clock_valid(const struct drm_connector *connector,
if (mode->flags & DRM_MODE_FLAG_DBLCLK)
return MODE_BAD;

- /* 165 MHz is the typical max pixelclock frequency for HDMI <= 1.2 */
- if (clock > 165000000)
+ /* HDMI 1.0 max TMDS character rate */
+ if (clock > HDMI_1_0_TMDS_CHAR_RATE_MAX_HZ)
return MODE_CLOCK_HIGH;

rounded_rate = clk_round_rate(hdmi->tmds_clk, clock);
--
2.54.0