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| author |   Yannick Fertré <yannick.fertre@st.com> | 2019-09-12 10:56:29 +0200 |
|---|---|---|
| committer |   Benjamin Gaignard <benjamin.gaignard@linaro.org> | 2019-09-16 15:14:10 +0200 |
| commit | 1e6962041c7a368de8227c90469fdddff31f19de (patch) | |
| tree | b0a469bf754a9960e14088dd6ced0674f3bcb0b1 /drivers/gpu/drm/stm | |
| parent | drm/bridge: analogix-anx78xx: convert to i2c_new_dummy_device (diff) | |
| download | linux-dev-1e6962041c7a368de8227c90469fdddff31f19de.tar.xz linux-dev-1e6962041c7a368de8227c90469fdddff31f19de.zip | |
drm/stm: dsi: higher pll out only in video burst mode
In order to better support video non-burst modes,
the +20% on pll out is added only in burst mode.
Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Reviewed-by: Yannick Fertré <yannick.fertre@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1568278589-20400-1-git-send-email-yannick.fertre@st.com
Diffstat (limited to 'drivers/gpu/drm/stm')
| -rw-r--r-- | drivers/gpu/drm/stm/dw_mipi_dsi-stm.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c index a03a642c147c..514efefb0016 100644 --- a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c +++ b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c @@ -260,8 +260,11 @@ dw_mipi_dsi_get_lane_mbps(void *priv_data, const struct drm_display_mode *mode, /* Compute requested pll out */ bpp = mipi_dsi_pixel_format_to_bpp(format); pll_out_khz = mode->clock * bpp / lanes; + /* Add 20% to pll out to be higher than pixel bw (burst mode only) */ - pll_out_khz = (pll_out_khz * 12) / 10; + if (mode_flags & MIPI_DSI_MODE_VIDEO_BURST) + pll_out_khz = (pll_out_khz * 12) / 10; + if (pll_out_khz > dsi->lane_max_kbps) { pll_out_khz = dsi->lane_max_kbps; DRM_WARN("Warning max phy mbps is used\n"); |