[ Upstream commit 8dbfc5b65023b67397aca28e8adb25c819f6398c ] The pixel clock unit in the first two registers (0x00 and 0x01) of sii9022 is 10kHz, not 1kHz as in struct drm_display_mode. Division by 10 fixes the issue. Signed-off-by: Jyri Sarha <jsarha@xxxxxx> Reviewed-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/1a2a8eae0b9d6333e7a5841026bf7fd65c9ccd09.1558964241.git.jsarha@xxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/gpu/drm/bridge/sii902x.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c index 1211b5379df1..8e3c5e599eba 100644 --- a/drivers/gpu/drm/bridge/sii902x.c +++ b/drivers/gpu/drm/bridge/sii902x.c @@ -229,10 +229,11 @@ static void sii902x_bridge_mode_set(struct drm_bridge *bridge, struct regmap *regmap = sii902x->regmap; u8 buf[HDMI_INFOFRAME_SIZE(AVI)]; struct hdmi_avi_infoframe frame; + u16 pixel_clock_10kHz = adj->clock / 10; int ret; - buf[0] = adj->clock; - buf[1] = adj->clock >> 8; + buf[0] = pixel_clock_10kHz & 0xff; + buf[1] = pixel_clock_10kHz >> 8; buf[2] = adj->vrefresh; buf[3] = 0x00; buf[4] = adj->hdisplay; -- 2.20.1
