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authorBaruch Siach <baruch@tkos.co.il>2010-01-25 12:58:20 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2010-01-26 18:54:06 +0100
commit828df43f139c7fbf0d505c7b9a666d321a0f2c25 (patch)
tree7b347b084da6499dd937ffc8a4d920d55d2fbe28
parentfadc095622dd188cae88eb2f3ff28fd6e9d2d2f1 (diff)
downloadop-kernel-dev-828df43f139c7fbf0d505c7b9a666d321a0f2c25.zip
op-kernel-dev-828df43f139c7fbf0d505c7b9a666d321a0f2c25.tar.gz
mx25: properly initialize clocks
This patch disables all unnecessary clock in mx25_clocks_init() to make a clean start, the same as is being done for the rest of the i.MX chips. This patch was tested on i.MX25 PDK. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r--arch/arm/mach-mx25/clock.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/mach-mx25/clock.c b/arch/arm/mach-mx25/clock.c
index abd303b..08aaa38 100644
--- a/arch/arm/mach-mx25/clock.c
+++ b/arch/arm/mach-mx25/clock.c
@@ -218,6 +218,14 @@ int __init mx25_clocks_init(void)
for (i = 0; i < ARRAY_SIZE(lookups); i++)
clkdev_add(&lookups[i]);
+ /* Turn off all clocks except the ones we need to survive, namely:
+ * EMI, GPIO1-3 (CCM_CGCR1[18:16]), GPT1, IOMUXC (CCM_CGCR1[27]), IIM,
+ * SCC
+ */
+ __raw_writel((1 << 19), CRM_BASE + CCM_CGCR0);
+ __raw_writel((0xf << 16) | (3 << 26), CRM_BASE + CCM_CGCR1);
+ __raw_writel((1 << 5), CRM_BASE + CCM_CGCR2);
+
mxc_timer_init(&gpt_clk, MX25_IO_ADDRESS(MX25_GPT1_BASE_ADDR), 54);
return 0;
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