diff options
| -rw-r--r-- | arch/arm/mach-mvebu/board-v7.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/arm/mach-mvebu/board-v7.c b/arch/arm/mach-mvebu/board-v7.c index 8bb742fdf5ca..a04675e2ec99 100644 --- a/arch/arm/mach-mvebu/board-v7.c +++ b/arch/arm/mach-mvebu/board-v7.c @@ -118,8 +118,16 @@ static void __init thermal_quirk(void) { struct device_node *np; u32 dev, rev; + int res; - if (mvebu_get_soc_id(&dev, &rev) == 0 && rev > ARMADA_375_Z1_REV) + /* + * The early SoC Z1 revision needs a quirk to be applied in order + * for the thermal controller to work properly. This quirk breaks + * the thermal support if applied on a SoC that doesn't need it, + * so we enforce the SoC revision to be known. + */ + res = mvebu_get_soc_id(&dev, &rev); + if (res < 0 || (res == 0 && rev > ARMADA_375_Z1_REV)) return; for_each_compatible_node(np, NULL, "marvell,armada375-thermal") { @@ -153,7 +161,8 @@ static void __init thermal_quirk(void) /* * The thermal controller needs some quirk too, so let's change - * the compatible string to reflect this. + * the compatible string to reflect this and allow the driver + * the take the necessary action. */ prop = kzalloc(sizeof(*prop), GFP_KERNEL); prop->name = kstrdup("compatible", GFP_KERNEL); |