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Date: Sun, 13 Mar 2022 16:46:40 +0100 From: Michael Walle <michael@...le.cc> To: Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh+dt@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>, Philipp Zabel <p.zabel@...gutronix.de>, Alexandre Belloni <alexandre.belloni@...tlin.com>, Lars Povlsen <lars.povlsen@...rochip.com> Cc: linux-gpio@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, Horatiu Vultur <horatiu.vultur@...rochip.com>, Michael Walle <michael@...le.cc> Subject: [PATCH RFC v1 2/2] pinctrl: ocelot: add optional shared reset On the LAN9668 there is a shared reset line which affects GPIO, SGPIO and the switch core. Add support for this shared reset line. Signed-off-by: Michael Walle <michael@...le.cc> --- drivers/pinctrl/pinctrl-ocelot.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/pinctrl/pinctrl-ocelot.c b/drivers/pinctrl/pinctrl-ocelot.c index 35b213de1af8..d78716533393 100644 --- a/drivers/pinctrl/pinctrl-ocelot.c +++ b/drivers/pinctrl/pinctrl-ocelot.c @@ -19,6 +19,7 @@ #include <linux/pinctrl/pinconf-generic.h> #include <linux/platform_device.h> #include <linux/regmap.h> +#include <linux/reset.h> #include <linux/slab.h> #include "core.h" @@ -1906,6 +1907,7 @@ static int ocelot_pinctrl_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct ocelot_pinctrl *info; + struct reset_control *reset; struct regmap *pincfg; void __iomem *base; int ret; @@ -1921,6 +1923,13 @@ static int ocelot_pinctrl_probe(struct platform_device *pdev) info->desc = (struct pinctrl_desc *)device_get_match_data(dev); + reset = devm_reset_control_get_optional_shared(dev, "switch"); + if (IS_ERR(reset)) { + dev_err(dev, "Failed to get reset\n"); + return PTR_ERR(reset); + } + reset_control_reset(reset); + base = devm_ioremap_resource(dev, platform_get_resource(pdev, IORESOURCE_MEM, 0)); if (IS_ERR(base)) -- 2.30.2
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