diff options
Diffstat (limited to 'arch/arm/mach-omap2/sr_device.c')
| -rw-r--r-- | arch/arm/mach-omap2/sr_device.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/sr_device.c b/arch/arm/mach-omap2/sr_device.c index 9a3538fb633a..786d685c09a9 100644 --- a/arch/arm/mach-omap2/sr_device.c +++ b/arch/arm/mach-omap2/sr_device.c @@ -20,6 +20,7 @@ #include <linux/err.h> #include <linux/slab.h> +#include <linux/io.h> #include <plat/omap_device.h> #include <plat/smartreflex.h> @@ -51,7 +52,21 @@ static void __init sr_set_nvalues(struct omap_volt_data *volt_data, GFP_KERNEL); for (i = 0; i < count; i++) { - u32 v = omap_ctrl_readl(volt_data[i].sr_efuse_offs); + u32 v; + /* + * In OMAP4 the efuse registers are 24 bit aligned. + * A __raw_readl will fail for non-32 bit aligned address + * and hence the 8-bit read and shift. + */ + if (cpu_is_omap44xx()) { + u16 offset = volt_data[i].sr_efuse_offs; + + v = omap_ctrl_readb(offset) | + omap_ctrl_readb(offset + 1) << 8 | + omap_ctrl_readb(offset + 2) << 16; + } else { + v = omap_ctrl_readl(volt_data[i].sr_efuse_offs); + } nvalue_table[i].efuse_offs = volt_data[i].sr_efuse_offs; nvalue_table[i].nvalue = v; |