Add DDR3 support into the MPC8xxx DDR driver.
To avoid confusion, the function set_ddr_sdram_mode is renamed
set_ddr2_sdram_mode.
Checking for errors is simplified in the DDR2 DIMM parameters
computation to be consistent with DDR3.
This code is derived from the files found in directory drivers/ddr/fsl
from U-Boot version git-be937b5.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Expression (pdimm->data_width >= 32) || (pdimm->data_width <= 40)
always evaluates to true, so probably we need to use "&&" here.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The use of the DDR driver as well as early I2C support is
enabled for board initialising their memory through SPD EEPROM
data.
A SOC specific function returning the DDR bus frequency
is added for the DDR driver to translate DDR timings to
register values.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
These files are the driver interface to handle the memory
initialisation from reading the SPD data to writing the memory
controller registers.
This code is based on the equivalent files main.c in directory
arch/powerpc/cpu/mpc8xxx/ddr and ddr-gen2.c in directory
arch/powerpc/cpu/mpc85xx. Both are from U-Boot version git-a71d45d.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The functions in this file calculate and store the value for each
register of the memory controller.
This code is based on the equivalent file in directory
arch/powerpc/cpu/mpc8xxx/ddr from U-Boot version git-a71d45d.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit adds functions to calculate clock cycles, configure the
LAW registers and populate board memory options.
This code is based on the equivalent files in directory
arch/powerpc/cpu/mpc8xxx/ddr from U-Boot version git-a71d45d.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This code calculates the DIMM characteritics i.e DIMM
organization parameters and timings for DDR2 memory based on
SPD data.
It also provides a function to find out the lowest common DIMM
parameters to be used for all DIMMs.
This code is based on the equivalent files in directory
arch/powerpc/cpu/mpc8xxx/ddr from U-Boot version git-a71d45d.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Structures are defined to record the common DIMM parameters
and memory options on a per DIMM basis.
This code is based on the equivalent files in directory
arch/powerpc/cpu/mpc8xxx/ddr from U-Boot version git-a71d45d.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Renaud Barbier
Alexander Shiyan