29 lines
1.0 KiB
Diff
29 lines
1.0 KiB
Diff
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From: Ondrej Jirman <megous@megous.com>
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Date: Tue, 16 Nov 2021 21:16:26 +0100
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Subject: [PATCH 07/36] drm: dw-mipi-dsi-rockchip: Never allow lane bandwidth
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to be less than requested
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Bandwidth can be less than requested in some cases, because the search
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for best values only checked for absolute difference from ideal value.
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This is likely not intentional.
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Signed-off-by: Ondrej Jirman <megous@megous.com>
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---
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drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
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index 095d0f1..bd488a8 100644
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--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
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+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
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@@ -612,7 +612,7 @@ dw_mipi_dsi_get_lane_mbps(void *priv_data, const struct drm_display_mode *mode,
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continue;
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delta = abs(fout - tmp);
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- if (delta < min_delta) {
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+ if (delta < min_delta && fout < tmp) {
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best_prediv = _prediv;
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best_fbdiv = _fbdiv;
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min_delta = delta;
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