Commit graph

9 commits

Author SHA1 Message Date
York Sun
3d75ec95f5 driver/ddr: Fix DDR register timing_cfg_8
The field wrtord_bg should add 2 clocks if on the fly chop is enabled,
according to DDR controller manual for DDR4.

Signed-off-by: York Sun <yorksun@freescale.com>
2014-07-22 16:25:55 -07:00
York Sun
9855b3beca powerpc/mpc85xx: Add workaround for DDR erratum A004508
When the DDR controller is initialized below a junction temperature of
0°C and then operated above a junction temperature of 65°C, the DDR
controller may cause receive data errors, resulting ECC errors and/or
corrupted data. This erratum applies to the following SoCs and their
variants: MPC8536, MPC8569, MPC8572, P1010, P1020, P1021, P1022, P1023,
P2020.

Signed-off-by: York Sun <yorksun@freescale.com>
2014-06-05 13:45:07 -07:00
York Sun
349689b802 drivers/ddr: Fix possible out of bounds error
This is a theoretical possible out of bounds error in DDR driver. Adding
check before using array index. Also change some runtime conditions to
pre-compiling conditions.

Signed-off-by: York Sun <yorksun@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-04-22 17:58:49 -07:00
York Sun
34e026f9b1 driver/ddr/fsl: Add DDR4 support to Freescale DDR driver
Mostly reusing DDR3 driver, this patch adds DDR4 SPD handling, register
calculation and programming.

Signed-off-by: York Sun <yorksun@freescale.com>
2014-04-22 17:58:48 -07:00
York Sun
6b1e1254f3 driver/ddr: Add 256 byte interleaving support
Freescale LayerScape SoCs support controller interleaving on 256 byte size.
This interleaving is mandoratory.

Signed-off-by: York Sun <yorksun@freescale.com>
2014-02-21 11:06:13 -05:00
York Sun
4e5b1bd0df driver/ddr: Change Freescale ARM DDR driver to support both big and little endian
Initially it was believed the DDR controller on Freescale ARM would have
big endian. But some platform will have little endian.

Signed-off-by: York Sun <yorksun@freescale.com>
2014-02-21 11:06:13 -05:00
York Sun
d4263b8adb powerpc/mpc8xxx: Extend DDR registers' fields
Some DDR registers' fields have expanded to accommodate larger values.
These changes are backward compatible. Some fields are removed for newer
DDR controllers. Writing to those fields are safely ignored.

TIMING_CFG_2 register is fixed. Additive latency is added to RD_TO_PRE
automatically. It was a misunderstanding in commit c360ceac.

Signed-off-by: York Sun <yorksun@freescale.com>
2013-11-25 11:43:46 -08:00
York Sun
9a17eb5b7e Driver/DDR: combine ccsr_ddr for 83xx, 85xx and 86xx
Fix ccsr_ddr structure to avoid using typedef. Combine DDR2 and DDR3
structure for 83xx, 85xx and 86xx.

Signed-off-by: York Sun <yorksun@freescale.com>
2013-11-25 11:43:46 -08:00
York Sun
5614e71b49 Driver/DDR: Moving Freescale DDR driver to a common driver
Freescale DDR driver has been used for mpc83xx, mpc85xx, mpc86xx SoCs.
The similar DDR controllers will be used for ARM-based SoCs.

Signed-off-by: York Sun <yorksun@freescale.com>
2013-11-25 11:43:43 -08:00
Renamed from arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c (Browse further)