diff options
Diffstat (limited to 'arch/arm/mach-omap2')
-rw-r--r-- | arch/arm/mach-omap2/omap_twl.c | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/arch/arm/mach-omap2/omap_twl.c b/arch/arm/mach-omap2/omap_twl.c index 615e5b1fb025..6bf626700557 100644 --- a/arch/arm/mach-omap2/omap_twl.c +++ b/arch/arm/mach-omap2/omap_twl.c @@ -46,15 +46,8 @@ static bool is_offset_valid; static u8 smps_offset; -/* - * Flag to ensure Smartreflex bit in TWL - * being cleared in board file is not overwritten. - */ -static bool __initdata twl_sr_enable_autoinit; -#define TWL4030_DCDC_GLOBAL_CFG 0x06 #define REG_SMPS_OFFSET 0xE0 -#define SMARTREFLEX_ENABLE BIT(3) static unsigned long twl4030_vsel_to_uv(const u8 vsel) { @@ -251,18 +244,6 @@ int __init omap3_twl_init(void) if (!cpu_is_omap34xx()) return -ENODEV; - /* - * The smartreflex bit on twl4030 specifies if the setting of voltage - * is done over the I2C_SR path. Since this setting is independent of - * the actual usage of smartreflex AVS module, we enable TWL SR bit - * by default irrespective of whether smartreflex AVS module is enabled - * on the OMAP side or not. This is because without this bit enabled, - * the voltage scaling through vp forceupdate/bypass mechanism of - * voltage scaling will not function on TWL over I2C_SR. - */ - if (!twl_sr_enable_autoinit) - omap3_twl_set_sr_bit(true); - voltdm = voltdm_lookup("mpu_iva"); omap_voltage_register_pmic(voltdm, &omap3_mpu_pmic); @@ -271,44 +252,3 @@ int __init omap3_twl_init(void) return 0; } - -/** - * omap3_twl_set_sr_bit() - Set/Clear SR bit on TWL - * @enable: enable SR mode in twl or not - * - * If 'enable' is true, enables Smartreflex bit on TWL 4030 to make sure - * voltage scaling through OMAP SR works. Else, the smartreflex bit - * on twl4030 is cleared as there are platforms which use OMAP3 and T2 but - * use Synchronized Scaling Hardware Strategy (ENABLE_VMODE=1) and Direct - * Strategy Software Scaling Mode (ENABLE_VMODE=0), for setting the voltages, - * in those scenarios this bit is to be cleared (enable = false). - * - * Returns 0 on success, error is returned if I2C read/write fails. - */ -int __init omap3_twl_set_sr_bit(bool enable) -{ - u8 temp; - int ret; - if (twl_sr_enable_autoinit) - pr_warning("%s: unexpected multiple calls\n", __func__); - - ret = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &temp, - TWL4030_DCDC_GLOBAL_CFG); - if (ret) - goto err; - - if (enable) - temp |= SMARTREFLEX_ENABLE; - else - temp &= ~SMARTREFLEX_ENABLE; - - ret = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, temp, - TWL4030_DCDC_GLOBAL_CFG); - if (!ret) { - twl_sr_enable_autoinit = true; - return 0; - } -err: - pr_err("%s: Error access to TWL4030 (%d)\n", __func__, ret); - return ret; -} |