How to eliminate MIPI DSI UI transition flicker on MX6?

キャンセル
次の結果を表示 
表示  限定  | 次の代わりに検索 
もしかして: 

How to eliminate MIPI DSI UI transition flicker on MX6?

ソリューションへジャンプ
1,983件の閲覧回数
raymondwang
Senior Contributor I

Recently I am debugging a MIPI DSI panel based on OTM9605A, Everything seems ok in uboot and kernel stage. But a little

problem annoyed me several days that flick when UI transition from bootloader to linux kernel.

I know I have enabled MIPI clock in clock.c

   ccgr3 |= 3 << MXC_CCM_CCGRx_CG8_OFFSET;

Any one encountered similar issue?

ラベル(4)
タグ(1)
0 件の賞賛
返信
1 解決策
1,426件の閲覧回数
raymondwang
Senior Contributor I

Issue resolved.

in clock.c pll3_pdf_540M and ipu1 clock was changed. Just comment out following lines for MX6DL

clk_set_rate(&pll3_pfd_540M, 540000000);

clk_set_parent(&ipu1_clk, &pll3_pfd_540M);

  Because in bootloader these clocks are enabled and used by MIPI panel. Re-enable or change will

cause panel flicking.

元の投稿で解決策を見る

0 件の賞賛
返信
1 返信
1,427件の閲覧回数
raymondwang
Senior Contributor I

Issue resolved.

in clock.c pll3_pdf_540M and ipu1 clock was changed. Just comment out following lines for MX6DL

clk_set_rate(&pll3_pfd_540M, 540000000);

clk_set_parent(&ipu1_clk, &pll3_pfd_540M);

  Because in bootloader these clocks are enabled and used by MIPI panel. Re-enable or change will

cause panel flicking.

0 件の賞賛
返信