eSDHC of LS1021a eMMC

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eSDHC of LS1021a eMMC

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jiye
Contributor V

Hi,

if my only boot source of  ls1021a stand alone chip is eMMC do I need to specify the boot mode in the RCW source file again?

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Also from the ls1021ARM reference manual

Section 4.4.1

The device samples the RCW source POR configuration inputs (cfg_rcw_src[0:n])
on deassertion of PORESET_B to determine the RCW source. Note that the POR
configuration inputs are sampled only on a PORESET_B.

How can I sample POR configuration inputs on my standalone application is this done automatically after deassertion of PORESET_B?

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Pavel
NXP TechSupport
NXP TechSupport

The cfg_rcw_src signals are used for RCW source.

 

The LS1021a SDHC is RCW source fir 0_0100_0000 setting of the cfg_rcw_src. See the Table 4-9 of the LS1021a Reference Manual.

 

The LS1021a RCW provides configuration for SDHC pin assigning of the LS1021a.

See the SDHC_BASE and SDHC_EXT fields in the LS1021a RCW.

The PBI_SRC RCW bits are used for setting SD/MMC as PBL initialization source.

Have a great day,
Pavel Chubakov

 

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