diff --git a/hw/fsi/aspeed_apb2opb.c b/hw/fsi/aspeed_apb2opb.c
index 0e2cc143f105..855dccf6094c 100644
--- a/hw/fsi/aspeed_apb2opb.c
+++ b/hw/fsi/aspeed_apb2opb.c
@@ -259,7 +259,7 @@ static const struct MemoryRegionOps aspeed_apb2opb_ops = {
     .read = fsi_aspeed_apb2opb_read,
     .write = fsi_aspeed_apb2opb_write,
     .valid.max_access_size = 4,
-    .valid.min_access_size = 4,
+    .valid.min_access_size = 1,
     .impl.max_access_size = 4,
     .impl.min_access_size = 4,
     .endianness = DEVICE_LITTLE_ENDIAN,
diff --git a/hw/gpio/aspeed_gpio.c b/hw/gpio/aspeed_gpio.c
index a5b3f454e800..c8bb7e590696 100644
--- a/hw/gpio/aspeed_gpio.c
+++ b/hw/gpio/aspeed_gpio.c
@@ -1372,7 +1372,7 @@ static const MemoryRegionOps aspeed_gpio_ops = {
     .read       = aspeed_gpio_read,
     .write      = aspeed_gpio_write,
     .endianness = DEVICE_LITTLE_ENDIAN,
-    .valid.min_access_size = 4,
+    .valid.min_access_size = 1,
     .valid.max_access_size = 4,
 };
 
@@ -1380,7 +1380,7 @@ static const MemoryRegionOps aspeed_gpio_2700_ops = {
     .read       = aspeed_gpio_2700_read,
     .write      = aspeed_gpio_2700_write,
     .endianness = DEVICE_LITTLE_ENDIAN,
-    .valid.min_access_size = 4,
+    .valid.min_access_size = 1,
     .valid.max_access_size = 4,
 };
 
diff --git a/hw/intc/aspeed_vic.c b/hw/intc/aspeed_vic.c
index 55fe51a6675f..8ee662064469 100644
--- a/hw/intc/aspeed_vic.c
+++ b/hw/intc/aspeed_vic.c
@@ -286,7 +286,7 @@ static const MemoryRegionOps aspeed_vic_ops = {
     .read = aspeed_vic_read,
     .write = aspeed_vic_write,
     .endianness = DEVICE_LITTLE_ENDIAN,
-    .valid.min_access_size = 4,
+    .valid.min_access_size = 1,
     .valid.max_access_size = 4,
     .valid.unaligned = false,
 };
diff --git a/hw/misc/aspeed_scu.c b/hw/misc/aspeed_scu.c
index 2c919349cfc0..b7a62da45907 100644
--- a/hw/misc/aspeed_scu.c
+++ b/hw/misc/aspeed_scu.c
@@ -436,7 +436,7 @@ static const MemoryRegionOps aspeed_ast2500_scu_ops = {
     .read = aspeed_scu_read,
     .write = aspeed_ast2500_scu_write,
     .endianness = DEVICE_LITTLE_ENDIAN,
-    .valid.min_access_size = 4,
+    .valid.min_access_size = 1,
     .valid.max_access_size = 4,
     .valid.unaligned = false,
 };
@@ -777,7 +777,7 @@ static const MemoryRegionOps aspeed_ast2600_scu_ops = {
     .read = aspeed_ast2600_scu_read,
     .write = aspeed_ast2600_scu_write,
     .endianness = DEVICE_LITTLE_ENDIAN,
-    .valid.min_access_size = 4,
+    .valid.min_access_size = 1,
     .valid.max_access_size = 4,
     .valid.unaligned = false,
 };
diff --git a/hw/misc/aspeed_sdmc.c b/hw/misc/aspeed_sdmc.c
index 4bc9faf691d6..ba700b008e5e 100644
--- a/hw/misc/aspeed_sdmc.c
+++ b/hw/misc/aspeed_sdmc.c
@@ -195,7 +195,7 @@ static const MemoryRegionOps aspeed_sdmc_ops = {
     .read = aspeed_sdmc_read,
     .write = aspeed_sdmc_write,
     .endianness = DEVICE_LITTLE_ENDIAN,
-    .valid.min_access_size = 4,
+    .valid.min_access_size = 1,
     .valid.max_access_size = 4,
 };
 
diff --git a/hw/misc/aspeed_xdma.c b/hw/misc/aspeed_xdma.c
index 1dd32f72f453..f222c632c099 100644
--- a/hw/misc/aspeed_xdma.c
+++ b/hw/misc/aspeed_xdma.c
@@ -114,7 +114,7 @@ static const MemoryRegionOps aspeed_xdma_ops = {
     .read = aspeed_xdma_read,
     .write = aspeed_xdma_write,
     .endianness = DEVICE_NATIVE_ENDIAN,
-    .valid.min_access_size = 4,
+    .valid.min_access_size = 1,
     .valid.max_access_size = 4,
 };
 
diff --git a/hw/net/ftgmac100.c b/hw/net/ftgmac100.c
index 478356ee3e10..c8f6e1138ed0 100644
--- a/hw/net/ftgmac100.c
+++ b/hw/net/ftgmac100.c
@@ -1150,7 +1150,7 @@ static ssize_t ftgmac100_receive(NetClientState *nc, const uint8_t *buf,
 static const MemoryRegionOps ftgmac100_ops = {
     .read = ftgmac100_read,
     .write = ftgmac100_write,
-    .valid.min_access_size = 4,
+    .valid.min_access_size = 1,
     .valid.max_access_size = 4,
     .endianness = DEVICE_LITTLE_ENDIAN,
 };
@@ -1158,7 +1158,7 @@ static const MemoryRegionOps ftgmac100_ops = {
 static const MemoryRegionOps ftgmac100_high_ops = {
     .read = ftgmac100_high_read,
     .write = ftgmac100_high_write,
-    .valid.min_access_size = 4,
+    .valid.min_access_size = 1,
     .valid.max_access_size = 4,
     .endianness = DEVICE_LITTLE_ENDIAN,
 };
diff --git a/hw/sd/aspeed_sdhci.c b/hw/sd/aspeed_sdhci.c
index 98d5460905df..85e3f05e438f 100644
--- a/hw/sd/aspeed_sdhci.c
+++ b/hw/sd/aspeed_sdhci.c
@@ -123,7 +123,7 @@ static const MemoryRegionOps aspeed_sdhci_ops = {
     .read = aspeed_sdhci_read,
     .write = aspeed_sdhci_write,
     .endianness = DEVICE_NATIVE_ENDIAN,
-    .valid.min_access_size = 4,
+    .valid.min_access_size = 1,
     .valid.max_access_size = 4,
 };
 
diff --git a/hw/timer/aspeed_timer.c b/hw/timer/aspeed_timer.c
index 149f7cc5a6aa..a116488aa2dd 100644
--- a/hw/timer/aspeed_timer.c
+++ b/hw/timer/aspeed_timer.c
@@ -460,7 +460,7 @@ static const MemoryRegionOps aspeed_timer_ops = {
     .read = aspeed_timer_read,
     .write = aspeed_timer_write,
     .endianness = DEVICE_LITTLE_ENDIAN,
-    .valid.min_access_size = 4,
+    .valid.min_access_size = 1,
     .valid.max_access_size = 4,
     .valid.unaligned = false,
 };
diff --git a/hw/watchdog/wdt_aspeed.c b/hw/watchdog/wdt_aspeed.c
index 39c3f362a833..d9fd6fc9079f 100644
--- a/hw/watchdog/wdt_aspeed.c
+++ b/hw/watchdog/wdt_aspeed.c
@@ -229,7 +229,7 @@ static const MemoryRegionOps aspeed_wdt_ops = {
     .read = aspeed_wdt_read,
     .write = aspeed_wdt_write,
     .endianness = DEVICE_LITTLE_ENDIAN,
-    .valid.min_access_size = 4,
+    .valid.min_access_size = 1,
     .valid.max_access_size = 4,
     .valid.unaligned = false,
 };
