From: Anson Huang <b20788@freescale.com>
Date: Thu, 16 Feb 2012 10:13:38 +0000 (+0800)
Subject: ENGR00174630 [MX6]Disable GPT serial clock
X-Git-Tag: v3.0.35-fsl_4.1.0~1615
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=efce41a70901fc351b2f2311423f526867555ba3;p=karo-tx-linux.git

ENGR00174630 [MX6]Disable GPT serial clock

Currently we use 24MHz clock as GPT's clock
source, serial clock can be disabled, it sourced
from high freq clock, gating it can save ~8mA @VDDSOC.

Signed-off-by: Anson Huang <b20788@freescale.com>
---

diff --git a/arch/arm/mach-mx6/clock.c b/arch/arm/mach-mx6/clock.c
index 56f78392b785..1c27d50c977f 100644
--- a/arch/arm/mach-mx6/clock.c
+++ b/arch/arm/mach-mx6/clock.c
@@ -5293,7 +5293,11 @@ int __init mx6_clocks_init(unsigned long ckil, unsigned long osc,
 	if (mx6q_revision() == IMX_CHIP_REVISION_1_0) {
 		gpt_clk[0].parent = &ipg_perclk;
 		gpt_clk[0].get_rate = NULL;
-		}
+	} else {
+		/* Here we use OSC 24M as GPT's clock source, no need to
+		enable gpt serial clock*/
+		gpt_clk[0].secondary = NULL;
+	}
 
 	if (cpu_is_mx6dl()) {
 		if (epdc_use_video_pll)