Commit 8fe9bf07 authored by Marek Szyprowski's avatar Marek Szyprowski Committed by Krzysztof Kozlowski

pinctrl: samsung: Ensure that pad retention is disabled on driver init

When pin controller device is a part of power domain, there is no guarantee
that the power domain was not turned off and then on during boot process
before probing of the pin control driver. If it happened, then pin control
driver should ensure that pad retention is turned off during its probe call.
Signed-off-by: default avatarMarek Szyprowski <>
Signed-off-by: default avatarKrzysztof Kozlowski <>
parent c1ae3cfa
......@@ -777,6 +777,7 @@ exynos_retention_init(struct samsung_pinctrl_drv_data *drvdata,
struct samsung_retention_ctrl *ctrl;
struct regmap *pmu_regs;
int i;
ctrl = devm_kzalloc(drvdata->dev, sizeof(*ctrl), GFP_KERNEL);
if (!ctrl)
......@@ -794,6 +795,10 @@ exynos_retention_init(struct samsung_pinctrl_drv_data *drvdata,
ctrl->enable = exynos_retention_enable;
ctrl->disable = exynos_retention_disable;
/* Ensure that retention is disabled on driver init */
for (i = 0; i < ctrl->nr_regs; i++)
regmap_write(pmu_regs, ctrl->regs[i], ctrl->value);
return ctrl;
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