diff options
| author | Krystian Hebel <krystian.hebel@3mdeb.com> | 2021-03-25 15:05:27 +0100 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2023-08-21 14:43:08 +0000 |
| commit | d3909e17935e25b7deb1588712749b6c2227cfe2 (patch) | |
| tree | 1a7a2bc68d1cda77bb2017cb5716d90a7fdb6c8f /src/device/dram/Makefile.inc | |
| parent | 757e0c1d40c2030339fba6c253e77f9345d70b53 (diff) | |
device/dram: add DDR4 RCD I2C access functions
Registering Clock Driver (RCD) is responsible for driving address and
control nets on RDIMM and LRDIMM applications. Its operation is
configurable by a set of Register Control Words (RCWs). There are two
ways of accessing RCWs: in-band on the memory channel as MRS commands
("MR7") or through I2C.
Access through I2C is generic, while MRS commands are passed to memory
controller registers in an implementation-specific way.
See JESD82-31 JEDEC standard for full details.
Change-Id: Ie4e6cfaeae16aba1853b33d527eddebadfbd3887
Signed-off-by: Krystian Hebel <krystian.hebel@3mdeb.com>
Signed-off-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67060
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Diffstat (limited to 'src/device/dram/Makefile.inc')
| -rw-r--r-- | src/device/dram/Makefile.inc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/device/dram/Makefile.inc b/src/device/dram/Makefile.inc index eb2e629991..64f1dba801 100644 --- a/src/device/dram/Makefile.inc +++ b/src/device/dram/Makefile.inc @@ -9,7 +9,7 @@ ramstage-$(CONFIG_USE_DDR5) += ddr5.c romstage-$(CONFIG_USE_LPDDR4) += lpddr4.c ramstage-$(CONFIG_USE_LPDDR4) += lpddr4.c -romstage-$(CONFIG_USE_DDR4) += ddr4.c +romstage-$(CONFIG_USE_DDR4) += ddr4.c rcd.c ramstage-$(CONFIG_USE_DDR4) += ddr4.c romstage-$(CONFIG_USE_DDR3) += ddr3.c |