From 92ab0a50157449c5bcf55ab4aad0a0c2da0be7c7 Mon Sep 17 00:00:00 2001 From: Alberto Panizzo Date: Fri, 15 May 2009 18:48:13 +0200 Subject: [PATCH] ARM MXC: Make-sure-ipg_per_clk-is-generated-by-ipg_clk-and-not-usb_pll From ff1fd9d7015d9b9ad3e0df2016d0415e2719747c Mon Sep 17 00:00:00 2001 From: Alberto Panizzo Date: Fri, 15 May 2009 17:21:21 +0200 Subject: [PATCH] Make sure ipg_per_clk is generated by ipg_clk and not usb_pll Signed-off-by: Alberto Panizzo Signed-off-by: Sascha Hauer --- arch/arm/mach-mx3/clock.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/mach-mx3/clock.c b/arch/arm/mach-mx3/clock.c index 09cbd4a15f81..28bd11dc89b8 100644 --- a/arch/arm/mach-mx3/clock.c +++ b/arch/arm/mach-mx3/clock.c @@ -579,6 +579,12 @@ int __init mx31_clocks_init(unsigned long fref) MX32, but still required to be set */ MXC_CCM_CGR2); + /* + * Before turning off usb_pll make sure ipg_per_clk is generated + * by ipg_clk and not usb_pll. + */ + __raw_writel(__raw_readl(MXC_CCM_CCMR) | (1 << 24), MXC_CCM_CCMR); + usb_pll_disable(&usb_pll_clk); pr_info("Clock input source is %ld\n", clk_get_rate(&ckih_clk)); -- 2.20.1