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[v6,1/5] i.MX: Fix i.MX31 default/reset configuration.

Message ID 6dc5bc4e0a450b20cecdb2991112e7281b653345.1449528242.git.jcd@tribudubois.net
State New
Headers show

Commit Message

Jean-Christophe Dubois Dec. 7, 2015, 10:53 p.m. UTC 
Linux on i.MX31/KZM is expecting the CCM to use the CKIH ref clock instead
of the CKIL plus the FPM multiplier.

We change the CCMR reg reset value to match linux expected config.

This allow the CCM to provide a 39MHz clk (as expected by linux) instead of
the actual 50MHz.

With this change the "sleep 60" command on linux is time accurate with
"real world time".

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
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Changes since v1:
 * Not present 
 
Changes since v2:
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Changes since v3:
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Changes since v4:
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Changes since v4:
 * No change

 hw/misc/imx_ccm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/hw/misc/imx_ccm.c b/hw/misc/imx_ccm.c
index 4cc2bbc..500dda5 100644
--- a/hw/misc/imx_ccm.c
+++ b/hw/misc/imx_ccm.c
@@ -123,7 +123,7 @@  static void imx_ccm_reset(DeviceState *dev)
 {
     IMXCCMState *s = IMX_CCM(dev);
 
-    s->ccmr = 0x074b0b7b;
+    s->ccmr = 0x074b0b7d;
     s->pdr0 = 0xff870b48;
     s->pdr1 = 0x49fcfe7f;
     s->mpctl = PLL_PD(1) | PLL_MFD(0) | PLL_MFI(6) | PLL_MFN(0);