[coreboot-gerrit] Change in coreboot[master]: dsi: Fix data rate

[Yu-Ping Wu (Code Review)]

Yu-Ping Wu has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/38827 )

Change subject: dsi: Fix data rate
......................................................................

dsi: Fix data rate

Change-Id: I23220d446833b956431006027bbc8cb20fc696a5
---
M src/soc/mediatek/common/dsi.c
1 file changed, 5 insertions(+), 3 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/27/38827/1

diff --git a/src/soc/mediatek/common/dsi.c b/src/soc/mediatek/common/dsi.c
index 238b1eb..618a2d4 100644
--- a/src/soc/mediatek/common/dsi.c
+++ b/src/soc/mediatek/common/dsi.c
@@ -48,9 +48,11 @@
     * for older platforms which do not have complete implementation in HFP.
     * Newer platforms should just set that to 1.0 (100 / 100).
     */
-	int data_rate = (u64)edid->mode.pixel_clock * bits_per_pixel *
-			MTK_DSI_MIPI_RATIO_NUMERATOR /
-			(1000 * lanes * MTK_DSI_MIPI_RATIO_DENOMINATOR);
+	int data_rate = DIV_ROUND_UP((u64)edid->mode.pixel_clock *
+				     bits_per_pixel *
+				     MTK_DSI_MIPI_RATIO_NUMERATOR,
+				     1000ULL * lanes *
+				     MTK_DSI_MIPI_RATIO_DENOMINATOR);
    printk(BIOS_INFO, "DSI data_rate: %d Mbps\n", data_rate);

if (data_rate < MTK_DSI_DATA_RATE_MIN_MHZ) {