On the upcoming RK3288 SoC contain some unrouted pins in their banks. So while for example pin8 of bank5 stays pin8 with all its settings (register offset etc), pins 0 to 7 are not routed outside the SoC at all. Therefore add a flag to mark these unrouted iomuxes to prevent people from using them.
Signed-off-by: Heiko Stuebner <[email protected]> --- drivers/pinctrl/pinctrl-rockchip.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c index 115c75d..c8920f5 100644 --- a/drivers/pinctrl/pinctrl-rockchip.c +++ b/drivers/pinctrl/pinctrl-rockchip.c @@ -70,6 +70,7 @@ enum rockchip_pinctrl_type { #define IOMUX_GPIO_ONLY BIT(0) #define IOMUX_WIDTH_4BIT BIT(1) #define IOMUX_SOURCE_PMU BIT(2) +#define IOMUX_UNROUTED BIT(3) /** * @type: iomux variant using IOMUX_* constants @@ -386,6 +387,11 @@ static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin) if (iomux_num > 3) return -EINVAL; + if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) { + dev_err(info->dev, "pin %d is unrouted\n", pin); + return -EINVAL; + } + if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY) return RK_FUNC_GPIO; @@ -436,6 +442,11 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux) if (iomux_num > 3) return -EINVAL; + if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) { + dev_err(info->dev, "pin %d is unrouted\n", pin); + return -EINVAL; + } + if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY) { if (mux != RK_FUNC_GPIO) { dev_err(info->dev, -- 1.9.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
