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 <f...@ltec.ch>
---
arch/arm/include/asm/arch-am33xx/sys_proto.h | 1 +
arch/arm/mach-omap2/am33xx/sys_info.c | 16 ++++++++++++++++
2 files changed, 17 insertions(+)
diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h
b/arch/arm/include/asm/arch-am33xx/sys_proto.h
index 4e78aaf..57fbfa4 100644
--- a/arch/arm/include/asm/arch-am33xx/sys_proto.h
+++ b/arch/arm/include/asm/arch-am33xx/sys_proto.h
@@ -40,6 +40,7 @@ void enable_norboot_pin_mux(void);
#endif
void am33xx_spl_board_init(void);
int am335x_get_efuse_mpu_max_freq(struct ctrl_dev *cdev);
+int am335x_get_mpu_vdd(int sil_rev, int frequency);
int am335x_get_tps65910_mpu_vdd(int sil_rev, int frequency);
#endif
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 @@ int am335x_get_efuse_mpu_max_freq(struct ctrl_dev *cdev)
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. */
--
2.7.4
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