summaryrefslogtreecommitdiff
path: root/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c
AgeCommit message (Collapse)Author
2013-11-25Driver/DDR: Moving Freescale DDR driver to a common driverYork Sun
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>
2013-10-24mpc8xxx: set x2 DDR3 refresh rate if SPD config requires itValentin Longchamp
If the DDR3 module supports industrial temperature range and requires the x2 refresh rate for that temp range, the refresh period must be 3.9us instead of 7.8 us. This was successfuly tested on kmp204x board with some MT41K128M16 DDR3 RAM chips (no module used, chips directly soldered on board with an SPD EEPROM). Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com> [York Sun: fix minor conflicts in fsl_ddr_dimm_params.h, lc_common_dimm_params.c, common_timing_params.h] Acked-by: York Sun <yorksun@freescale.com>
2013-10-16powerpc: Fix CamelCase warnings in DDR related codePriyanka Jain
Some DDR related structures present in fsl_ddr_dimm_params.h, fsl_ddr_sdram.h, ddr_spd.h has various parameters with embedded acronyms capitalized that trigger the CamelCase warning in checkpatch.pl Convert those variable names to smallcase naming convention and modify all files which are using these structures with modified structures. Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
2013-08-09powerpc/mpc8xxx: Fix TIMING_CFG_3[EXT_ACTTOPRE]James Yang
The TIMING_CFG_3[EXT_ACTTOPRE] register field is 2 bits wide, but the mask omitted the LSB. This patch provides a 2-bit wide mask. Signed-off-by: James Yang <James.Yang@freescale.com> Signed-off-by: York Sun <yorksun@freescale.com>
2013-08-09powerpc/mpc8xxx: Add x4 DDR device supportYork Sun
On selected platforms, x4 DDR devices can be supported. Using x4 devices may lower the performance, but generally they are available for higher density. Tested on MT36JSF2G72PZ-1G9E1 RDIMM. Signed-off-by: York Sun <yorksun@freescale.com>
2013-08-09powerpc/mpc8xxx: Set inactive csn_bnds to 0xffffffffYork Sun
When chip select interleaving is enabled, cs0_bnds is used for address binding. Other csn_bnds are not used. When two controllers interleaving is enabled, cs0_bnds of both controllers are used, other csn_bnds are not. However, the unused csn_bnds may be used internally for calculating addresses for calibration. Setting those registers to 0 may confuse controllers in some cases. Instead, setting them to 0xffffffff together with normal LAWs will guarantee the address is not mapped to DDR. Signed-off-by: York Sun <yorksun@freescale.com>
2013-08-09mpc85xx: Base emulator supportYork Sun
Prepare for emulator support for mpc85xx parts. Disable DDR training and skip wrlvl_cntl_2 and wrlvl_cntl_3 registers. These two registers improve stability but not supported by emulator. Add CONFIG_FSL_TBCLK_EXTRA_DIV for possible adjustment to time base. Signed-off-by: York Sun <yorksun@freescale.com>
2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2013-01-30mpc8xxx: fix DDR init value to use CONFIG_MEM_INIT_VALUEAnatolij Gustschin
Configuring custom memory init value using CONFIG_MEM_INIT_VALUE in the board config file doesn't work and memory is always initialized to the value 0xdeadbeef. Only use this default value if a board doesn't define CONFIG_MEM_INIT_VALUE. Signed-off-by: Anatolij Gustschin <agust@denx.de> Cc: Andy Fleming <afleming@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-11-278xxx: Change all 8*xx_DDR addresses to 8xxxAndy Fleming
There were a number of shared files that were using CONFIG_SYS_MPC85xx_DDR_ADDR, or CONFIG_SYS_MPC86xx_DDR_ADDR, and several variants (DDR2, DDR3). A recent patchset added 85xx-specific ones to code which was used by 86xx systems. After reviewing places where these constants were used, and noting that the type definitions of the pointers assigned to point to those addresses were the same, the cleanest approach to fixing this problem was to unify the namespace for the 85xx, 83xx, and 86xx DDR address definitions. This patch does: s/CONFIG_SYS_MPC8.xx_DDR/CONFIG_SYS_MPC8xxx_DDR/g All 85xx, 86xx, and 83xx have been built with this change. Signed-off-by: Andy Fleming <afleming@freescale.com> Tested-by: Andy Fleming <afleming@freescale.com> Acked-by: Kim Phillips <kim.phillips@freescale.com>
2012-11-04arch/powerpc/cpu/mpc8xxx/: sparse fixesKim Phillips
ctrl_regs.c:31:5: warning: symbol 'fsl_ddr_get_version' was not declared. Should it be static? cpu.c:135:14: warning: non-ANSI function declaration of function 'cpu_mask' cpu.c:154:18: warning: non-ANSI function declaration of function 'cpu_numcores' cpu.c:37:17: warning: symbol 'cpu_type_list' was not declared. Should it be static? cpu.c:117:17: warning: symbol 'cpu_type_unknown' was not declared. Should it be static? fsl_lbc.c:14:6: warning: symbol '__lbc_sdram_init' was not declared. Should it be static? and: lc_common_dimm_params.c:15:1: warning: symbol 'compute_cas_latency_ddr3' was not declared. Should it be static? making it static produces the following compiler warning: lc_common_dimm_params.c:15:1: warning: 'compute_cas_latency_ddr3' defined but not used [-Wunused-function] so we protect it with the preprocessor. Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2012-10-22powerpc/mpc8xxx: Fix DDR driver handling quad-rank DIMMs and address calculationYork Sun
Fix handling quad-rank DIMMs in a system with two DIMM slots and first slot supports both dual-rank DIMM and quad-rank DIMM. For systems with quad-rank DIMM and double dual-rank DIMMs, cs_config registers need to be enabled to maintain proper ODT operation. The inactive CS should have bnds registers cleared. Fix the turnaround timing for systems with all chip-selects enabled. This wasn't an issue before because DDR was running lower than 1600MT/s with this interleaving mode. Fix DDR address calculation. It wasn't an issue until we have multiple controllers with each more than 4GB and interleaving is disabled. It also fixes the message of DDR: 2 GiB (DDR3, 64-bit, CL=0.5, ECC off) when debugging DDR and first DDR controller is disabled. With the fix, the first enabled controller information will be displayed. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-10-22powerpc/mpc8xxx: Update DDR registersYork Sun
DDRC ver 4.7 adds DDR_SLOW bit in sdram_cfg_2 register. This bit needs to be set for speed lower than 1250MT/s. CDR1 and CDR2 are control driver registers. ODT termination valueis for IOs are defined. Starting from DDRC 4.7, the decoding of ODT for IOs is 000 -> Termsel off 001 -> 120 Ohm 010 -> 180 Ohm 011 -> 75 Ohm 100 -> 110 Ohm 101 -> 60 Ohm 110 -> 70 Ohm 111 -> 47 Ohm Add two write leveling registers. Each QDS now has its own write leveling start value. In case of zero value, the value of QDS0 will be used. These values are board-specific and are set in board files. Extend DDR register timing_cfg_1 to have 4 bits for each field. DDR control driver registers and write leveling registers are added to interactive debugging for easy access. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-08-23powerpc/mpc8xxx: Fix bug for extended DDR timingYork Sun
Faster DDR3 timing requires parameters exceeding previously defined range. Extended parameters are fixed. Added some debug messages. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-08-23powerpc/mpc8xxx: Enable 3-way and 4-way DDR interleavingYork Sun
Restructure DDR interleaving option to support 3 and 4 DDR controllers for 2-, 3- and 4-way interleaving. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-08-23powerpc/mpc8xxx: Add support for cas latency 12 and aboveYork Sun
Required by JEDEC 79-3E for high speed DDR3. Also change "CSn disabled" message to debug. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
2011-11-11arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c: Fix GCC 4.6 build warningKumar Gala
Fix: ctrl_regs.c: In function 'set_ddr_sdram_cfg_2': ctrl_regs.c:641:15: warning: variable 'rcw_en' set but not used [-Wunused-but-set-variable] ctrl_regs.c: In function 'compute_fsl_memctl_config_regs': ctrl_regs.c:951:31: warning: array subscript is above array bounds [-Warray-bounds] ctrl_regs.c:752:34: warning: array subscript is above array bounds [-Warray-bounds] Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-09-29powerpc/mpc83xx: Migrate from spd_sdram to unified DDR driverYork Sun
Unified DDR driver is maintained for better performance, robustness and bug fixes. Upgrading to use unified DDR driver for MPC83xx takes advantage of overall improvement. It requires changes for board files to customize platform-dependent parameters. To utilize the unified DDR driver, a board needs to define CONFIG_FSL_DDRx in the header file. No more boards will be accepted without such definition. Note: the workaround for erratum DDR6 for the very old MPC834x Rev 1.0/1.1 and MPC8360 Rev 1.1/1.2 parts is not migrated to unified driver. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-09-29powerpc/mpc8xxx: Fix DDR code for empty first DIMM slot and enable DQS_enYork Sun
Check second DIMM slot in case the first one is empty. Honor DQS enable option for SDRAM mode register. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-09-29powerpc/mpc8xxx: Extend CWL tableYork Sun
Extend CAS write Latency (CWL) table to comply with DDR3 spec Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-07-11powerpc/mpc8xxx: Allow override DDR read-to-write turnaround timeYork Sun
Add this option to allow boards to override the default read-to-write turnaround time for better performance. Signed-off-by: York Sun <yorksun@freescale.com>
2011-04-04powerpc/8xxx: Fix typo for address hashing messageKumar Gala
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-04-04powerpc/8xxx: Replace fsl_ddr_get_mem_data_rate with get_ddr_freq()Kumar Gala
Every 85xx board implements fsl_ddr_get_mem_data_rate via get_ddr_freq() and every 86xx board uses get_bus_freq(). If implement get_ddr_freq() as a static inline to call get_bus_freq() we can remove fsl_ddr_get_mem_data_rate altogether and just call get_ddr_freq() directly. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-03-24powerpc/mpc8xxx: disable rcw_en bit for non-DDR3York Sun
rcw_en bit is only available for DDR3 controllers. It is a reserved bit on DDR1 and DDR2 controllers. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-03-05powerpc/mpc8xxx: Fix DDR3 timing_cfg_1 and sdram_mode registersYork Sun
The write recovery time of both registers should match. Since mode register doesn't support cycles of 9,11,13,15, we should use next higher number for both registers. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-02-10powerpc/8xxx: Add additional cycle to write-to-read turnaound for DDR3York Sun
When DDR data rate is higher than 1200MT/s or controller interleaving is enabled, additional cycle for write-to-read turnaround is needed to satisfy dynamic ODT timing. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-01-24powerpc/8xxx: Fix compile warning when build for a DDR1 or DDR2 boardKumar Gala
ctrl_regs.c: In function 'set_ddr_sdram_mode_2': ctrl_regs.c:690:6: warning: unused variable 'i' 'i' is only used by DDR3 code. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-01-19mpc85xx: Enable unique mode registers and dynamic ODT for DDR3York Sun
Added fsl_ddr_get_version() function to for DDR3 to poll DDRC IP version (major, minor, errata) to determine if unique mode registers are available. If true, always use unique mode registers. Dynamic ODT is enabled if needed. The table is documented in doc/README.fsl-ddr. This function may also need to be extend for future other platforms if such a feature exists. Enable address parity and RCW by default for RDIMMs. Change default output driver impedance from 34 ohm to 40ohm. Make it 34ohm for quad-rank RDIMMs. Use a formula to calculate rodt_on for timing_cfg_5. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-01-198xxx/ddr: add support to only compute the ddr sdram sizeHaiying Wang
This patch adds fsl_ddr_sdram_size to only calculate the ddr sdram size, in case that the DDR SDRAM is initialized in the 2nd stage uboot and should not be intialized again in the final stage uboot. Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-10-20Disable unused chip-select for DDR controller interleavingYork Sun
When DDR controller interleaving is eabled and less than all bank (chip-select) interleaving is seletected, the unused chip-select should be disabled. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-08-31Fix parameters to support RDIMM for P2020DSYork Sun
Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-07-26powerpc/8xxx: Improvement to DDR parametersyork
Changes for P2020DS DDR applies to other 8xxx platform Signed-off-by: York Sun <yorksun@freescale.com>
2010-07-26powerpc/8xxx: Enable DDR3 RDIMM supportyork
Enabled registered DIMMs using data from SPD. RDIMMs have registers which need to be configured before using. The register configuration words are stored in SPD byte 60~116 (JEDEC standard No.21-C). Software should read those RCWs and put into DDR controller before initialization. Signed-off-by: York Sun <yorksun@freescale.com>
2010-07-26powerpc/8xxx: Enabled address hashing for 85xxyork
For 85xx silicon which supports address hashing, it can be activated by hwconfig. Signed-off-by: York Sun <yorksun@freescale.com>
2010-07-26powerpc/8xxx: Enable quad-rank DIMMs.york
Previous code presumes each DIMM has up to two rank (chip select). Newer DDR controller supports up to four chip select on one DIMM. Signed-off-by: York Sun <yorksun@freescale.com>
2010-07-26powerpc/8xxx: Fix bug in memctrl interleaving & bank interleaving on cs0~cs4york
Verified on MPC8641HPCN with four DDR2 dimms. Each dimm has dual rank with 512MB each rank. Also check dimm size and rank size for memory controller interleaving Signed-off-by: York Sun <yorksun@freescale.com>
2010-04-26fsl-ddr: Add extra cycle to turnaround timesDave Liu
Add an extra cycle turnaround time to read->write to ensure stability at high DDR frequencies. Signed-off-by: Dave Liu <daveliu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-04-21Move arch/ppc to arch/powerpcStefan Roese
As discussed on the list, move "arch/ppc" to "arch/powerpc" to better match the Linux directory structure. Please note that this patch also changes the "ppc" target in MAKEALL to "powerpc" to match this new infrastructure. But "ppc" is kept as an alias for now, to not break compatibility with scripts using this name. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Wolfgang Denk <wd@denx.de> Acked-by: Detlev Zundel <dzu@denx.de> Acked-by: Kim Phillips <kim.phillips@freescale.com> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Anatolij Gustschin <agust@denx.de>
generated by cgit v1.2.3 (git 2.0.4) at 2025-08-09 02:23:36 +0000