From 76ce87ca5063ae7b0bee00ce328cab362519d318 Mon Sep 17 00:00:00 2001 From: Jernej Skrabec Date: Sun, 4 Nov 2018 19:26:54 +0100 Subject: [PATCH] drm/sun4i: dw-hdmi: Add quirk for setting TMDS clock It turns out that H6 HDMI BSP kernel driver doesn't change TMDS rate at all. At this point it is not clear whether it is just not necessary or it would cause some kind of issues. Add a quirk for it. Acked-by: Maxime Ripard Reviewed-by: Chen-Yu Tsai Signed-off-by: Jernej Skrabec Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20181104182705.18047-18-jernej.skrabec@siol.net --- drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c | 4 +++- drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h | 1 + 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c index ec122136ee9d..99b878e380e1 100644 --- a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c +++ b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c @@ -21,7 +21,8 @@ static void sun8i_dw_hdmi_encoder_mode_set(struct drm_encoder *encoder, { struct sun8i_dw_hdmi *hdmi = encoder_to_sun8i_dw_hdmi(encoder); - clk_set_rate(hdmi->clk_tmds, mode->crtc_clock * 1000); + if (hdmi->quirks->set_rate) + clk_set_rate(hdmi->clk_tmds, mode->crtc_clock * 1000); } static const struct drm_encoder_helper_funcs @@ -235,6 +236,7 @@ static int sun8i_dw_hdmi_remove(struct platform_device *pdev) static const struct sun8i_dw_hdmi_quirks sun8i_a83t_quirks = { .mode_valid = sun8i_dw_hdmi_mode_valid_a83t, + .set_rate = true, }; static const struct of_device_id sun8i_dw_hdmi_dt_ids[] = { diff --git a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h index a645b8bc9f58..49c9e80c46ea 100644 --- a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h +++ b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h @@ -173,6 +173,7 @@ struct sun8i_hdmi_phy { struct sun8i_dw_hdmi_quirks { enum drm_mode_status (*mode_valid)(struct drm_connector *connector, const struct drm_display_mode *mode); + unsigned int set_rate : 1; }; struct sun8i_dw_hdmi { -- 2.30.2