Re: [PATCH 1/2] PCI: uniphier: Set mode register to host mode

[Andrew Murray]

On Thu, Nov 07, 2019 at 01:58:14PM +0900, Kunihiko Hayashi wrote:
> In order to avoid effect of the initial mode depending on SoCs,
> this patch sets the mode register to host(RC) mode.
> 
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@xxxxxxxxxxxxx>
> ---
>  drivers/pci/controller/dwc/pcie-uniphier.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-uniphier.c b/drivers/pci/controller/dwc/pcie-uniphier.c
> index 3f30ee4..8fd7bad 100644
> --- a/drivers/pci/controller/dwc/pcie-uniphier.c
> +++ b/drivers/pci/controller/dwc/pcie-uniphier.c
> @@ -33,6 +33,10 @@
>  #define PCL_PIPEMON			0x0044
>  #define PCL_PCLK_ALIVE			BIT(15)
>  
> +#define PCL_MODE			0x8000
> +#define PCL_MODE_REGEN			BIT(8)
> +#define PCL_MODE_REGVAL			BIT(0)
> +
>  #define PCL_APP_READY_CTRL		0x8008
>  #define PCL_APP_LTSSM_ENABLE		BIT(0)
>  
> @@ -85,6 +89,12 @@ static void uniphier_pcie_init_rc(struct uniphier_pcie_priv *priv)
>  {
>  	u32 val;
>  
> +	/* set RC MODE */
> +	val = readl(priv->base + PCL_MODE);
> +	val |= PCL_MODE_REGEN;
> +	val &= ~PCL_MODE_REGVAL;
> +	writel(val, priv->base + PCL_MODE);
> +

Reviewed-by: Andrew Murray <andrew.murray@xxxxxxx>

>  	/* use auxiliary power detection */
>  	val = readl(priv->base + PCL_APP_PM0);
>  	val |= PCL_SYS_AUX_PWR_DET;
> -- 
> 2.7.4
>