kernelconfig_penguin
CONFIG_ARCH_LPC32XX_IRAM_FOR_NET is not available for the default architecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_LPC32XX_IRAM_FOR_NET.
Result is shown for kernelversion 3.4.99

Use IRAM for network buffers

configname: CONFIG_ARCH_LPC32XX_IRAM_FOR_NET

Linux Kernel Configuration
└─> LPC32XX chip components
└─> Use IRAM for network buffers

Say Y here to use the LPC internal fast IRAM (i.e. 256KB SRAM) as
network buffer. If the total combined required buffer sizes is
larger than the size of IRAM, then SDRAM will be used instead.

This can be enabled safely if the IRAM is not intended for other
uses.