The A31 SoC define a reset line for the R_PIO block which needs to be deasserted for the pin controller to be usable. Try to retrieve a reset line and deassert if one was found. Signed-off-by: Boris BREZILLON <boris.brezillon@xxxxxxxxxxxxxxxxxx> --- drivers/pinctrl/pinctrl-sunxi.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/pinctrl/pinctrl-sunxi.c b/drivers/pinctrl/pinctrl-sunxi.c index ee62027..b752495 100644 --- a/drivers/pinctrl/pinctrl-sunxi.c +++ b/drivers/pinctrl/pinctrl-sunxi.c @@ -26,6 +26,7 @@ #include <linux/pinctrl/pinconf-generic.h> #include <linux/pinctrl/pinmux.h> #include <linux/platform_device.h> +#include <linux/reset.h> #include <linux/slab.h> #include "core.h" @@ -792,6 +793,7 @@ static int sunxi_pinctrl_probe(struct platform_device *pdev) const struct of_device_id *device; struct pinctrl_pin_desc *pins; struct sunxi_pinctrl *pctl; + struct reset_control *rstc; int i, ret, last_pin; struct clk *clk; @@ -885,6 +887,13 @@ static int sunxi_pinctrl_probe(struct platform_device *pdev) clk_prepare_enable(clk); + rstc = devm_reset_control_get(&pdev->dev, NULL); + if (!IS_ERR(rstc)) { + ret = reset_control_deassert(rstc); + if (ret) + goto gpiochip_error; + } + pctl->irq = irq_of_parse_and_map(node, 0); if (!pctl->irq) { ret = -EINVAL; -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html