Commit 1e696204 authored Sep 12, 2019 by Yannick Fertré Committed by Benjamin Gaignard Sep 16, 2019

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

parent 2f932367

drivers/gpu/drm/stm/dw_mipi_dsi-stm.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -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) */
		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");

Admin message