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arm: zynq: Add Kconfig option for any DDR specific initialization

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Add Kconfig option for ddr init as this might be required
in cases like ddr less systems where we want to skip ddrc
init and this option is useful for it.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Siva Durga Prasad Paladugu 2017-05-12 15:04:11 +05:30 committed by Michal Simek
parent 6a1d91be31
commit d84bd9284e
2 changed files with 12 additions and 0 deletions
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8
arch/arm/mach-zynq/Kconfig
View File

@ -24,6 +24,14 @@ config SPL_SPI_FLASH_SUPPORT
config SPL_SPI_SUPPORT
default y if ZYNQ_QSPI
config ZYNQ_DDRC_INIT
bool "Zynq DDRC initialization"
default y
help
This option used to perform DDR specific initialization
if required. There might be cases like ddr less where we
want to skip ddr init and this option is useful for it.
config SYS_BOARD
default "zynq"

4
arch/arm/mach-zynq/ddrc.c
View File

@ -12,6 +12,9 @@
DECLARE_GLOBAL_DATA_PTR;
#ifndef CONFIG_ZYNQ_DDRC_INIT
void zynq_ddrc_init(void) {}
#else
/* Control regsiter bitfield definitions */
#define ZYNQ_DDRC_CTRLREG_BUSWIDTH_MASK 0xC
#define ZYNQ_DDRC_CTRLREG_BUSWIDTH_SHIFT 2
@ -46,3 +49,4 @@ void zynq_ddrc_init(void)
puts("ECC disabled ");
}
}
#endif