Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/58111 )
Change subject: mb/siemens/mc_ehl2: Update SPD for DDR4 devices ......................................................................
mb/siemens/mc_ehl2: Update SPD for DDR4 devices
Since this variant uses different DDR4 devices compared to mc_ehl1 in a memory down configuration, the SPD data file must be adapted. In a first configuration we use Micron MT53D512M32D2NP modules.
Following values were adjusted according to this board characteristic and with help of Serial Presence Detect (SPD) for LPDDR3 and LPDDR4 SDRAM Modules JEDEC Spec and the Specification for this Micron modules itself:
- SPD Byte 4 - only 4Gb density instead of 8Gb for mc_ehl1 - SPD Byte 5 - different Row and Column Address Bits - SPD Byte 29/30 - 4Gb LPDDR4 needs 130ns tRFCab - SPD Byte 31/32 - 4Gb LPDDR4 needs 60ns tRFCpb
Change-Id: Icb25f418952f0c96117140863d0d9c897d814ac5 Signed-off-by: Mario Scheithauer mario.scheithauer@siemens.com Reviewed-on: https://review.coreboot.org/c/coreboot/+/58111 Tested-by: build bot (Jenkins) no-reply@coreboot.org Reviewed-by: Werner Zeh werner.zeh@siemens.com --- M src/mainboard/siemens/mc_ehl/variants/mc_ehl2/spd/mc_ehl2.spd.hex 1 file changed, 3 insertions(+), 3 deletions(-)
Approvals: build bot (Jenkins): Verified Werner Zeh: Looks good to me, approved
diff --git a/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/spd/mc_ehl2.spd.hex b/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/spd/mc_ehl2.spd.hex index 71e5456..eff68b3 100644 --- a/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/spd/mc_ehl2.spd.hex +++ b/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/spd/mc_ehl2.spd.hex @@ -1,6 +1,6 @@ -23 11 11 0E 15 21 90 08 00 40 00 00 02 22 00 00 -00 00 04 0F 92 54 05 00 87 00 90 A8 90 C0 08 60 -04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +23 11 11 0E 14 19 90 08 00 40 00 00 02 22 00 00 +00 00 04 0F 92 54 05 00 87 00 90 A8 90 10 04 E0 +01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
3 is the latest approved patch-set. No files were changed between the latest approved patch-set and the submitted one.