From: BALATON Zoltan <balaton@eik.bme.hu>
Date: Wed, 8 Oct 2025 12:25:02 +0000 (+0200)
Subject: hw/i2c/smbus_eeprom: Add minimum write recovery time for DDR2
X-Git-Tag: v10.2.0-rc1~53^2~32
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=40eed74cc9deaa4343b31e49a6fbf7f037e8d841;p=thirdparty%2Fqemu.git

hw/i2c/smbus_eeprom: Add minimum write recovery time for DDR2

This is needed for newer u-boot-sam460ex versions to pass the DRAM
setup.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20251008122502.9DA8956F301@zero.eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---

diff --git a/hw/i2c/smbus_eeprom.c b/hw/i2c/smbus_eeprom.c
index 0a1088fbb0..26e211b31a 100644
--- a/hw/i2c/smbus_eeprom.c
+++ b/hw/i2c/smbus_eeprom.c
@@ -288,6 +288,7 @@ uint8_t *spd_data_generate(enum sdram_type type, ram_addr_t ram_size)
     spd[33] = 8;    /* addr/cmd hold time */
     spd[34] = 20;   /* data input setup time */
     spd[35] = 8;    /* data input hold time */
+    spd[36] = (type == DDR2 ? 13 << 2 : 0); /* min. write recovery time */
 
     /* checksum */
     for (i = 0; i < 63; i++) {