On 01/09/2019 15:39, Remi Pommarel wrote:
> Normally asserting reset signal on gpio would be achieved with:
> gpiod_set_value_cansleep(reset_gpio, 1);
>
> Meson PCI driver set reset value to '0' instead of '1' as it takes into
> account the PERST# signal polarity. The polarity should be taken care
> in the device tree instead.
>
> This fixes the reset assertion meaning and moves out the polarity
> configuration in DT (please note that there is no DT currently using
> this driver).
>
> Signed-off-by: Remi Pommarel <repk@xxxxxxxxxxxx>
> ---
> drivers/pci/controller/dwc/pci-meson.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pci/controller/dwc/pci-meson.c b/drivers/pci/controller/dwc/pci-meson.c
> index e35e9eaa50ee..541f37a6f6a5 100644
> --- a/drivers/pci/controller/dwc/pci-meson.c
> +++ b/drivers/pci/controller/dwc/pci-meson.c
> @@ -287,9 +287,9 @@ static inline void meson_cfg_writel(struct meson_pcie *mp, u32 val, u32 reg)
>
> static void meson_pcie_assert_reset(struct meson_pcie *mp)
> {
> - gpiod_set_value_cansleep(mp->reset_gpio, 0);
> - udelay(500);
> gpiod_set_value_cansleep(mp->reset_gpio, 1);
> + udelay(500);
> + gpiod_set_value_cansleep(mp->reset_gpio, 0);
> }
>
> static void meson_pcie_init_dw(struct meson_pcie *mp)
>
Reviewed-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
