memory: pl172: add ARM PrimeCell PL175 MPMC support

[linux-2.6-microblaze.git] / drivers / memory / pl172.c

diff --git a/drivers/memory/pl172.c b/drivers/memory/pl172.c
index 95a4ad7..cb6ebb8 100644 (file)
--- a/drivers/memory/pl172.c
+++ b/drivers/memory/pl172.c
@@ -118,7 +118,8 @@ static int pl172_setup_static(struct amba_device *adev,
        if (of_property_read_bool(np, "mpmc,extended-wait"))
                cfg |= MPMC_STATIC_CFG_EW;
 
-       if (of_property_read_bool(np, "mpmc,buffer-enable"))
+       if (amba_part(adev) == 0x172 &&
+           of_property_read_bool(np, "mpmc,buffer-enable"))
                cfg |= MPMC_STATIC_CFG_B;
 
        if (of_property_read_bool(np, "mpmc,write-protect"))
@@ -190,6 +191,7 @@ static int pl172_parse_cs_config(struct amba_device *adev,
 }
 
 static const char * const pl172_revisions[] = {"r1", "r2", "r2p3", "r2p4"};
+static const char * const pl175_revisions[] = {"r1"};
 
 static int pl172_probe(struct amba_device *adev, const struct amba_id *id)
 {
@@ -202,6 +204,9 @@ static int pl172_probe(struct amba_device *adev, const struct amba_id *id)
        if (amba_part(adev) == 0x172) {
                if (amba_rev(adev) < ARRAY_SIZE(pl172_revisions))
                        rev = pl172_revisions[amba_rev(adev)];
+       } else if (amba_part(adev) == 0x175) {
+               if (amba_rev(adev) < ARRAY_SIZE(pl175_revisions))
+                       rev = pl175_revisions[amba_rev(adev)];
        }
 
        dev_info(dev, "ARM PL%x revision %s\n", amba_part(adev), rev);
@@ -283,6 +288,11 @@ static const struct amba_id pl172_ids[] = {
                .id     = 0x07041172,
                .mask   = 0x3f0fffff,
        },
+       /* PrimeCell MPMC PL175, EMC found on NXP LPC32xx */
+       {
+               .id     = 0x07041175,
+               .mask   = 0x3f0fffff,
+       },
        { 0, 0 },
 };
 MODULE_DEVICE_TABLE(amba, pl172_ids);