diff options
| author | Jerome Neanne <jneanne@baylibre.com> | 2022-09-29 15:25:25 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-09-29 15:20:14 +0100 |
| commit | adfdfcbdbd32b356323a3db6d3a683270051a7e6 (patch) | |
| tree | 5a9a2a98a86588ae3898c8a20d9bda1d574bca62 | |
| parent | 947934e389f716d505a656d04388b2ecbe43281d (diff) | |
regulator: gpio: Add input_supply support in gpio_regulator_config
This is simillar as fixed-regulator.
Used to extract regulator parent from the device tree.
Without that property used, the parent regulator can be shut down (if not an always on).
Thus leading to inappropriate behavior:
On am62-SP-SK this fix is required to avoid tps65219 ldo1 (SDMMC rail) to be shut down after boot completion.
Signed-off-by: Jerome Neanne <jneanne@baylibre.com>
Link: https://lore.kernel.org/r/20220929132526.29427-2-jneanne@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | drivers/regulator/gpio-regulator.c | 15 | ||||
| -rw-r--r-- | include/linux/regulator/gpio-regulator.h | 2 |
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/regulator/gpio-regulator.c b/drivers/regulator/gpio-regulator.c index 5927d4f3eabd..95e61a2f43f5 100644 --- a/drivers/regulator/gpio-regulator.c +++ b/drivers/regulator/gpio-regulator.c @@ -220,6 +220,9 @@ of_get_gpio_regulator_config(struct device *dev, struct device_node *np, regtype); } + if (of_find_property(np, "vin-supply", NULL)) + config->input_supply = "vin"; + return config; } @@ -259,6 +262,18 @@ static int gpio_regulator_probe(struct platform_device *pdev) drvdata->gpiods = devm_kzalloc(dev, sizeof(struct gpio_desc *), GFP_KERNEL); + + if (config->input_supply) { + drvdata->desc.supply_name = devm_kstrdup(&pdev->dev, + config->input_supply, + GFP_KERNEL); + if (!drvdata->desc.supply_name) { + dev_err(&pdev->dev, + "Failed to allocate input supply\n"); + return -ENOMEM; + } + } + if (!drvdata->gpiods) return -ENOMEM; for (i = 0; i < config->ngpios; i++) { diff --git a/include/linux/regulator/gpio-regulator.h b/include/linux/regulator/gpio-regulator.h index fdeb312cdabd..c223e50ff9f7 100644 --- a/include/linux/regulator/gpio-regulator.h +++ b/include/linux/regulator/gpio-regulator.h @@ -42,6 +42,7 @@ struct gpio_regulator_state { /** * struct gpio_regulator_config - config structure * @supply_name: Name of the regulator supply + * @input_supply: Name of the input regulator supply * @enabled_at_boot: Whether regulator has been enabled at * boot or not. 1 = Yes, 0 = No * This is used to keep the regulator at @@ -62,6 +63,7 @@ struct gpio_regulator_state { */ struct gpio_regulator_config { const char *supply_name; + const char *input_supply; unsigned enabled_at_boot:1; unsigned startup_delay; |