diff options
| author | Felix Brack <fb@ltec.ch> | 2017-10-11 19:42:23 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-11-17 15:43:32 +0300 |
| commit | c07bf9bea7781f282944508573e38b18ec50062d (patch) | |
| tree | 032bc610a8a00e6c7695e840d8d07bd4cd0263f7 /arch | |
| parent | ebca2083d3689c77c7d1365f1e6862b55abef8a2 (diff) | |
| download | u-boot-c07bf9bea7781f282944508573e38b18ec50062d.tar.xz | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/arch-am33xx/sys_proto.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/am33xx/sys_info.c | 16 |
2 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h b/arch/arm/include/asm/arch-am33xx/sys_proto.h index 4e78aafb0b..57fbfa4625 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 ea434aaf33..0181a8cb0c 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. */ |