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| author | Christophe Kerello <christophe.kerello@st.com> | 2018-06-27 11:59:47 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-07-19 16:31:36 -0400 |
| commit | 844f9bf1eea75ff1ac1b1552ec4cac32ba829abb (patch) | |
| tree | a41a6ea207bba4ce6f2f4a5150468f1e71cd1792 /drivers | |
| parent | a1b2faed7cbaf23d4af8a629c4db1bebb8e99d1b (diff) | |
| download | u-boot-844f9bf1eea75ff1ac1b1552ec4cac32ba829abb.tar.gz u-boot-844f9bf1eea75ff1ac1b1552ec4cac32ba829abb.tar.bz2 u-boot-844f9bf1eea75ff1ac1b1552ec4cac32ba829abb.zip | |
power: regulator: stpmu1: add power off delay
This patch adds a delay when regulators are disabled.
This delay is set to 5 ms to cover all use cases.
The worst use case actually seen is during a SD card power cycle.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/power/regulator/stpmu1.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/power/regulator/stpmu1.c b/drivers/power/regulator/stpmu1.c index 2dedb80acc..6eb2420b6b 100644 --- a/drivers/power/regulator/stpmu1.c +++ b/drivers/power/regulator/stpmu1.c @@ -183,6 +183,8 @@ static int stpmu1_buck_get_enable(struct udevice *dev) static int stpmu1_buck_set_enable(struct udevice *dev, bool enable) { struct dm_regulator_uclass_platdata *uc_pdata; + int delay = enable ? STPMU1_DEFAULT_START_UP_DELAY_MS : + STPMU1_DEFAULT_STOP_DELAY_MS; int ret, uv; /* if regulator is already in the wanted state, nothing to do */ @@ -199,8 +201,7 @@ static int stpmu1_buck_set_enable(struct udevice *dev, bool enable) ret = pmic_clrsetbits(dev->parent, STPMU1_BUCKX_CTRL_REG(dev->driver_data - 1), STPMU1_BUCK_EN, enable ? STPMU1_BUCK_EN : 0); - if (enable) - mdelay(STPMU1_DEFAULT_START_UP_DELAY_MS); + mdelay(delay); return ret; } @@ -361,6 +362,8 @@ static int stpmu1_ldo_get_enable(struct udevice *dev) static int stpmu1_ldo_set_enable(struct udevice *dev, bool enable) { struct dm_regulator_uclass_platdata *uc_pdata; + int delay = enable ? STPMU1_DEFAULT_START_UP_DELAY_MS : + STPMU1_DEFAULT_STOP_DELAY_MS; int ret, uv; /* if regulator is already in the wanted state, nothing to do */ @@ -377,8 +380,7 @@ static int stpmu1_ldo_set_enable(struct udevice *dev, bool enable) ret = pmic_clrsetbits(dev->parent, STPMU1_LDOX_CTRL_REG(dev->driver_data - 1), STPMU1_LDO_EN, enable ? STPMU1_LDO_EN : 0); - if (enable) - mdelay(STPMU1_DEFAULT_START_UP_DELAY_MS); + mdelay(delay); return ret; } @@ -489,6 +491,8 @@ static int stpmu1_vref_ddr_get_enable(struct udevice *dev) static int stpmu1_vref_ddr_set_enable(struct udevice *dev, bool enable) { + int delay = enable ? STPMU1_DEFAULT_START_UP_DELAY_MS : + STPMU1_DEFAULT_STOP_DELAY_MS; int ret; /* if regulator is already in the wanted state, nothing to do */ @@ -497,8 +501,7 @@ static int stpmu1_vref_ddr_set_enable(struct udevice *dev, bool enable) ret = pmic_clrsetbits(dev->parent, STPMU1_VREF_CTRL_REG, STPMU1_VREF_EN, enable ? STPMU1_VREF_EN : 0); - if (enable) - mdelay(STPMU1_DEFAULT_START_UP_DELAY_MS); + mdelay(delay); return ret; } @@ -610,6 +613,8 @@ static int stpmu1_pwr_sw_get_enable(struct udevice *dev) static int stpmu1_pwr_sw_set_enable(struct udevice *dev, bool enable) { uint mask = 1 << dev->driver_data; + int delay = enable ? STPMU1_DEFAULT_START_UP_DELAY_MS : + STPMU1_DEFAULT_STOP_DELAY_MS; int ret; ret = pmic_reg_read(dev->parent, STPMU1_USB_CTRL_REG); @@ -633,8 +638,7 @@ static int stpmu1_pwr_sw_set_enable(struct udevice *dev, bool enable) ret = pmic_clrsetbits(dev->parent, STPMU1_USB_CTRL_REG, mask, enable ? mask : 0); - if (enable) - mdelay(STPMU1_DEFAULT_START_UP_DELAY_MS); + mdelay(delay); return ret; } |