Wrong SDRAM burst mode setting in RBC mode (LPCOpen 2.04, LPC43xx)

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Wrong SDRAM burst mode setting in RBC mode (LPCOpen 2.04, LPC43xx)

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lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by TaGUNil on Tue Mar 04 03:30:09 MST 2014
UM10503 (22.8.5.2) says that in RBC (high-performance) mode content of the mode register must be shifted additionally by the number of bank select bits. SDRAM initialization code in emc_18xx_43xx.c does not perform this shift. So the solution is to use BRC mode only (EMC_DYN_CONFIG_LPSDRAM) or to fix the driver like I did. My fix is attached below.

Original Attachment has been moved to: lpcopen_emc_rbc.patch.zip

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lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by TaGUNil on Thu Mar 06 02:49:36 MST 2014
Thank you for the inclusion of this fix into LPCOpen 2.09.
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lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by sundarapandian on Tue Mar 04 17:30:24 MST 2014
Thank you for the patch, the code will be added to the next LPCOpen release after verification.
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