Am Mittwoch, 18. November 2020, 08:17:21 CET schrieb Chen-Yu Tsai: > From: Chen-Yu Tsai <wens@xxxxxxxx> > > The Rockchip PCIe controller DT binding clearly states that 'ep-gpios' is > an optional property. And indeed there are boards that don't require it. > > Make the driver follow the binding by using devm_gpiod_get_optional() > instead of devm_gpiod_get(). > > Fixes: e77f847df54c ("PCI: rockchip: Add Rockchip PCIe controller support") > Fixes: 956cd99b35a8 ("PCI: rockchip: Separate common code from RC driver") > Fixes: 964bac9455be ("PCI: rockchip: Split out rockchip_pcie_parse_dt() to parse DT") > Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx> Reviewed-by: Heiko Stuebner <heiko@xxxxxxxxx I'll pick up patches 2-4 separately, after giving Rob a chance to look at the simple binding. Heiko > --- > Changes since v1: > > - Rewrite subject to match existing convention and reference > 'ep-gpios' DT property instead of the 'ep_gpio' field > --- > drivers/pci/controller/pcie-rockchip.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/pci/controller/pcie-rockchip.c b/drivers/pci/controller/pcie-rockchip.c > index 904dec0d3a88..c95950e9004f 100644 > --- a/drivers/pci/controller/pcie-rockchip.c > +++ b/drivers/pci/controller/pcie-rockchip.c > @@ -118,7 +118,7 @@ int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip) > } > > if (rockchip->is_rc) { > - rockchip->ep_gpio = devm_gpiod_get(dev, "ep", GPIOD_OUT_HIGH); > + rockchip->ep_gpio = devm_gpiod_get_optional(dev, "ep", GPIOD_OUT_HIGH); > if (IS_ERR(rockchip->ep_gpio)) { > dev_err(dev, "missing ep-gpios property in node\n"); > return PTR_ERR(rockchip->ep_gpio); >