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i2c/smbus_eeprom: Add feature bit to SPD data 

Add the differential clock input feature bit to the generated SPD
data. Most guests don't seem to care but pegasos2 firmware version 1.2
checks for this bit and stops with unsupported module type error if
it's not present. Since this feature is likely present on real memory
modules add it in the general code rather than patching the generated
SPD data in pegasos2 board only.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <19d42ade295d5297aa624a9eb757b8df18cf64d6.1626367844.git.balaton@eik.bme.hu>
Acked-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
BALATON Zoltan 2021-07-15 18:50:44 +02:00 committed by David Gibson
parent 6ebc0048dd
commit 793abe24aa
1 changed files with 1 additions and 1 deletions
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2
hw/i2c/smbus_eeprom.c
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@ -276,7 +276,7 @@ uint8_t *spd_data_generate(enum sdram_type type, ram_addr_t ram_size)
spd[18] = 12; /* ~CAS latencies supported */
spd[19] = (type == DDR2 ? 0 : 1); /* reserved / ~CS latencies supported */
spd[20] = 2; /* DIMM type / ~WE latencies */
/* module features */
spd[21] = (type < DDR2 ? 0x20 : 0); /* module features */
/* memory chip features */
spd[23] = 0x12; /* clock cycle time @ medium CAS latency */
/* data access time */