From 4b1140ade8f5c1ced640286cce79371ade2bd2d1 Mon Sep 17 00:00:00 2001 From: Kunihiko Hayashi Date: Thu, 7 Nov 2019 13:58:14 +0900 Subject: [PATCH] PCI: uniphier: Set mode register to host mode Set the mode register to host(RC) mode so that the host controller mode is set-up consistently across SoCs. Signed-off-by: Kunihiko Hayashi [lorenzo.pieralisi@arm.com: updated log] Signed-off-by: Lorenzo Pieralisi Reviewed-by: Andrew Murray --- 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 3f30ee4a00b3..8fd7badd59c2 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); + /* use auxiliary power detection */ val = readl(priv->base + PCL_APP_PM0); val |= PCL_SYS_AUX_PWR_DET; -- 2.11.0