diff options
Diffstat (limited to 'arch/arm/mach-mvebu/armada-370-xp.c')
| -rw-r--r-- | arch/arm/mach-mvebu/armada-370-xp.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-mvebu/armada-370-xp.c b/arch/arm/mach-mvebu/armada-370-xp.c index e2acff98e750..f6c9d1d85c14 100644 --- a/arch/arm/mach-mvebu/armada-370-xp.c +++ b/arch/arm/mach-mvebu/armada-370-xp.c @@ -21,6 +21,7 @@ #include <linux/clocksource.h> #include <linux/dma-mapping.h> #include <linux/mbus.h> +#include <linux/slab.h> #include <asm/hardware/cache-l2x0.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> @@ -28,6 +29,7 @@ #include "armada-370-xp.h" #include "common.h" #include "coherency.h" +#include "mvebu-soc-id.h" static void __init armada_370_xp_map_io(void) { @@ -45,8 +47,38 @@ static void __init armada_370_xp_timer_and_clk_init(void) #endif } +static void __init i2c_quirk(void) +{ + struct device_node *np; + u32 dev, rev; + + /* + * Only revisons more recent than A0 support the offload + * mechanism. We can exit only if we are sure that we can + * get the SoC revision and it is more recent than A0. + */ + if (mvebu_get_soc_id(&rev, &dev) == 0 && dev > MV78XX0_A0_REV) + return; + + for_each_compatible_node(np, NULL, "marvell,mv78230-i2c") { + struct property *new_compat; + + new_compat = kzalloc(sizeof(*new_compat), GFP_KERNEL); + + new_compat->name = kstrdup("compatible", GFP_KERNEL); + new_compat->length = sizeof("marvell,mv78230-a0-i2c"); + new_compat->value = kstrdup("marvell,mv78230-a0-i2c", + GFP_KERNEL); + + of_update_property(np, new_compat); + } + return; +} + static void __init armada_370_xp_dt_init(void) { + if (of_machine_is_compatible("plathome,openblocks-ax3-4")) + i2c_quirk(); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); } |