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Commit 2ced325f authored by Xiaoming Zhou's avatar Xiaoming Zhou
Browse files

msm: mdss: set the mdp core clock rate on 8x10 



During the kernel initialization, we need to set
rate on the mdp core clock rate.  Otherwise, the
core clock rate is at its minimum, causing display
under-run on large panels.

Change-Id: Idcd69a758cbf3022f8ad6590b021f21dad5972b1
Signed-off-by: default avatarXiaoming Zhou <zhoux@codeaurora.org>
parent 03ccedbc

drivers/video/msm/mdss/mdp3.c

+4 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2013, The Linux Foundation. All rights reserved.

/* Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.

 * Copyright (C) 2007 Google Incorporated

 *

 * This software is licensed under the terms of the GNU General Public
@@ -1886,6 +1886,9 @@ static int mdp3_continuous_splash_on(struct mdss_panel_data *pdata) 
	mdp3_clk_set_rate(MDP3_CLK_VSYNC, MDP_VSYNC_CLK_RATE,

			MDP3_CLIENT_DMA_P);



	mdp3_clk_set_rate(MDP3_CLK_CORE, MDP_CORE_CLK_RATE,

			MDP3_CLIENT_DMA_P);



	rc = mdp3_clk_prepare();

	if (rc) {

		pr_err("fail to prepare clk\n");

drivers/video/msm/mdss/mdp3.h

+2 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2013, The Linux Foundation. All rights reserved.

/* Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.

 * Copyright (C) 2007 Google Incorporated

 *

 * This program is free software; you can redistribute it and/or modify
@@ -25,6 +25,7 @@ 
#include "mdss_fb.h"



#define MDP_VSYNC_CLK_RATE	19200000

#define MDP_CORE_CLK_RATE	100000000

#define KOFF_TIMEOUT msecs_to_jiffies(84)



enum  {

drivers/video/msm/mdss/mdp3_ctrl.c

+1 −2
Original line number Diff line number Diff line 
/* Copyright (c) 2013, The Linux Foundation. All rights reserved.

/* Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -25,7 +25,6 @@ 
#include "mdp3.h"

#include "mdp3_ppp.h"



#define MDP_CORE_CLK_RATE	100000000

#define VSYNC_EXPIRE_TICK	4



static void mdp3_ctrl_pan_display(struct msm_fb_data_type *mfd,