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authorPeng Fan <peng.fan@nxp.com>2019-10-29 01:21:31 +0000
committerMark Brown <broonie@kernel.org>2019-10-29 12:32:12 +0000
commitf7907e57aea2adcd0b57ebcca410e125412ab680 (patch)
tree333fb9e7cddca1d0d2631d7330c47e1324473132 /drivers/regulator
parent96da2d9c905b36a30052a5e38ae5d47c3dc988e6 (diff)
downloadlinux-f7907e57aea2adcd0b57ebcca410e125412ab680.tar.bz2
regulator: fixed: add off-on-delay
Depends on board design, the gpio controlling regulator may connects with a big capacitance. When need off, it takes some time to let the regulator to be truly off. If not add enough delay, the regulator might have always been on, so introduce off-on-delay to handle such case. Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/1572311875-22880-3-git-send-email-peng.fan@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/fixed.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index f81533070058..bc0bbd99e98d 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -123,6 +123,7 @@ of_get_fixed_voltage_config(struct device *dev,
config->enabled_at_boot = true;
of_property_read_u32(np, "startup-delay-us", &config->startup_delay);
+ of_property_read_u32(np, "off-on-delay-us", &config->off_on_delay);
if (of_find_property(np, "vin-supply", NULL))
config->input_supply = "vin";
@@ -189,6 +190,7 @@ static int reg_fixed_voltage_probe(struct platform_device *pdev)
}
drvdata->desc.enable_time = config->startup_delay;
+ drvdata->desc.off_on_delay = config->off_on_delay;
if (config->input_supply) {
drvdata->desc.supply_name = devm_kstrdup(&pdev->dev,