diff options
| author | Prathamesh Shete <pshete@nvidia.com> | 2024-12-17 21:02:49 +0530 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2025-02-28 09:37:25 +0100 |
| commit | 7da6a3578ab4bcff5f6bdea5fcef08a82139c868 (patch) | |
| tree | 5be9e8e8ded834e8bccd6c5ef38b2b852d3795a8 | |
| parent | e2a9df2fe119f030f30b7dcba5c734058fd37487 (diff) | |
pinctrl-tegra: Add config property GPIO mode
The SFIO/GPIO select bit is a crucial part of Tegra's pin multiplexing
system:
- When set to 1, the pin operates in SFIO mode, controlled by the
pin's assigned special function.
- When set to 0, the pin operates as a general-purpose GPIO.
This SFIO/GPIO select bit that is set for a given pin is not displayed,
adding the support to retrieve this information from the
pinmux set for each pin.
Signed-off-by: Prathamesh Shete <pshete@nvidia.com>
Link: https://lore.kernel.org/20241217153249.5712-1-pshete@nvidia.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| -rw-r--r-- | drivers/pinctrl/tegra/pinctrl-tegra.c | 11 | ||||
| -rw-r--r-- | drivers/pinctrl/tegra/pinctrl-tegra.h | 2 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/pinctrl/tegra/pinctrl-tegra.c b/drivers/pinctrl/tegra/pinctrl-tegra.c index c83e5a65e680..314309c797d7 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra.c +++ b/drivers/pinctrl/tegra/pinctrl-tegra.c @@ -96,6 +96,7 @@ static const struct cfg_param { {"nvidia,slew-rate-falling", TEGRA_PINCONF_PARAM_SLEW_RATE_FALLING}, {"nvidia,slew-rate-rising", TEGRA_PINCONF_PARAM_SLEW_RATE_RISING}, {"nvidia,drive-type", TEGRA_PINCONF_PARAM_DRIVE_TYPE}, + {"nvidia,gpio-mode", TEGRA_PINCONF_PARAM_GPIO_MODE}, }; static int tegra_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev, @@ -468,6 +469,16 @@ static int tegra_pinconf_reg(struct tegra_pmx *pmx, *bit = g->drvtype_bit; *width = 2; break; + case TEGRA_PINCONF_PARAM_GPIO_MODE: + if (pmx->soc->sfsel_in_mux) { + *bank = g->mux_bank; + *reg = g->mux_reg; + *bit = g->sfsel_bit; + *width = 1; + } else { + *reg = -EINVAL; + } + break; default: dev_err(pmx->dev, "Invalid config param %04x\n", param); return -ENOTSUPP; diff --git a/drivers/pinctrl/tegra/pinctrl-tegra.h b/drivers/pinctrl/tegra/pinctrl-tegra.h index b3289bdf727d..216cc59b62b4 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra.h +++ b/drivers/pinctrl/tegra/pinctrl-tegra.h @@ -54,6 +54,8 @@ enum tegra_pinconf_param { TEGRA_PINCONF_PARAM_SLEW_RATE_RISING, /* argument: Integer, range is HW-dependant */ TEGRA_PINCONF_PARAM_DRIVE_TYPE, + /* argument: Boolean */ + TEGRA_PINCONF_PARAM_GPIO_MODE, }; enum tegra_pinconf_pull { |