evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

mdss: dp: fix the NVID parameter calculation for Display Port

Browse source 
The NVID programming for Display Port needs to be set to twice
the 'n' divider of the pixel clock RCG for 5.4 GHz link rate.
Add change to take care of this in Display Port driver.

Change-Id: Ied31f67372d9738e96d1d908acd96a02b82d4630
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
This commit is contained in:
Padmanabhan Komanduru 2017-06-23 17:08:13 +05:30
parent a7bf109995
commit 72cdcba926
1 changed files with 2 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/video/fbdev/msm/mdss_dp_util.c
View file

@ -835,6 +835,8 @@ void mdss_dp_sw_config_msa(struct mdss_dp_drv_pdata *dp)
pr_debug("pixel_m=0x%x, pixel_n=0x%x\n", pixel_m, pixel_n);
mvid = (pixel_m & 0xFFFF) * 5;
nvid = (0xFFFF & (~pixel_n)) + (pixel_m & 0xFFFF);
if (dp->link_rate == DP_LINK_RATE_540)
nvid *= 2;
}
pr_debug("mvid=0x%x, nvid=0x%x\n", mvid, nvid);