am33xx: Add a function to query MPU voltage in uV
For the DM TPS65910 driver I'm working on, querying the MPU voltage
should return a value in uV. This value can then be used by the
regulator's standard function set_value to set the MPU voltage.
Signed-off-by: Felix Brack <fb@ltec.ch>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/arch/arm/mach-omap2/am33xx/sys_info.c b/arch/arm/mach-omap2/am33xx/sys_info.c
index ea434aa..0181a8c 100644
--- a/arch/arm/mach-omap2/am33xx/sys_info.c
+++ b/arch/arm/mach-omap2/am33xx/sys_info.c
@@ -175,6 +175,22 @@
return MPUPLL_M_720;
}
+int am335x_get_mpu_vdd(int sil_rev, int frequency)
+{
+ int sel_mask = am335x_get_tps65910_mpu_vdd(sil_rev, frequency);
+
+ switch (sel_mask) {
+ case TPS65910_OP_REG_SEL_1_3_2_5:
+ return 1325000;
+ case TPS65910_OP_REG_SEL_1_2_0:
+ return 1200000;
+ case TPS65910_OP_REG_SEL_1_1_0:
+ return 1100000;
+ default:
+ return 1262500;
+ }
+}
+
int am335x_get_tps65910_mpu_vdd(int sil_rev, int frequency)
{
/* For PG2.0 and later, we have one set of values. */