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 ---
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. */