[PATCH for-5.2 08/19] aspeed/sdhci: Fix reset sequence

[Cédric Le Goater]

BIT(0) of the ASPEED_SDHCI_INFO register is set by SW and polled until
the bit is cleared by HW. Add definitions for the default value of
this register and fix the reset sequence by clearing the RESET bit.

Cc: Eddie James <eajames@linux.ibm.com>
Fixes: 2bea128c3d0b ("hw/sd/aspeed_sdhci: New device")
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 hw/sd/aspeed_sdhci.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/hw/sd/aspeed_sdhci.c b/hw/sd/aspeed_sdhci.c
index 22cafce0fbdc..c51cda932463 100644
--- a/hw/sd/aspeed_sdhci.c
+++ b/hw/sd/aspeed_sdhci.c
@@ -16,7 +16,9 @@
 #include "hw/qdev-properties.h"
 
 #define ASPEED_SDHCI_INFO            0x00
-#define  ASPEED_SDHCI_INFO_RESET     0x00030000
+#define  ASPEED_SDHCI_INFO_SLOT1     (1 << 17)
+#define  ASPEED_SDHCI_INFO_SLOT0     (1 << 16)
+#define  ASPEED_SDHCI_INFO_RESET     (1 << 0)
 #define ASPEED_SDHCI_DEBOUNCE        0x04
 #define  ASPEED_SDHCI_DEBOUNCE_RESET 0x00000005
 #define ASPEED_SDHCI_BUS             0x08
@@ -67,6 +69,9 @@ static void aspeed_sdhci_write(void *opaque, hwaddr addr, 
uint64_t val,
     AspeedSDHCIState *sdhci = opaque;
 
     switch (addr) {
+    case ASPEED_SDHCI_INFO:
+        sdhci->regs[TO_REG(addr)] = (uint32_t)val & ~ASPEED_SDHCI_INFO_RESET;
+
     case ASPEED_SDHCI_SDIO_140:
         sdhci->slots[0].capareg = (uint64_t)(uint32_t)val;
         break;
@@ -155,7 +160,8 @@ static void aspeed_sdhci_reset(DeviceState *dev)
     AspeedSDHCIState *sdhci = ASPEED_SDHCI(dev);
 
     memset(sdhci->regs, 0, ASPEED_SDHCI_REG_SIZE);
-    sdhci->regs[TO_REG(ASPEED_SDHCI_INFO)] = ASPEED_SDHCI_INFO_RESET;
+    sdhci->regs[TO_REG(ASPEED_SDHCI_INFO)] =
+        ASPEED_SDHCI_INFO_SLOT1 | ASPEED_SDHCI_INFO_SLOT0;
     sdhci->regs[TO_REG(ASPEED_SDHCI_DEBOUNCE)] = ASPEED_SDHCI_DEBOUNCE_RESET;
 }
 
-- 
2.25.4