This patch enables a QHD HDMI monitor to work at native resolution.
Tested on a Sapphire board with RK3399 connected to a Q27q-10 monitor at
2560x1440@60
Messages like
dwhdmi-rockchip ff940000.hdmi: PHY configuration failed (clock 148501000)
and like
dwhdmi-rockchip ff940000.hdmi: PHY configuration failed (clock 241501000)
were present and still are because of vop_crtc_mode_fixup in
drivers/gpu/drm/rockchip/rockchip_drm_vop.c
but this time the display ends up working fine, just after an extra delay
of a few seconds.
Changes since v2:
Just add the strictly required frequency for backwards compatibility.
Changes since v1:
Use alternative clock rounding code proposed by Doug Anderson
Signed-off-by: Vicente Bergas <vice...@gmail.com>
---
drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index 23de359a1..e1515d55b 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -148,6 +148,10 @@ static const struct dw_hdmi_mpll_config
rockchip_mpll_cfg[] = {
{ 0x214c, 0x0003},
{ 0x4064, 0x0003}
},
+ }, {
+ 241500000, {
+ { 0x0040, 0x0003},
+ },
}, {
~0UL, {
{ 0x00a0, 0x000a },
@@ -173,6 +177,8 @@ static const struct dw_hdmi_curr_ctrl rockchip_cur_ctr[] = {
146250000, { 0x0038, 0x0038, 0x0038 },
}, {
148500000, { 0x0000, 0x0038, 0x0038 },
+ }, {
+ 241500000, { 0x0000, },
}, {
~0UL, { 0x0000, 0x0000, 0x0000},
}
--
2.29.2
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