From: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Andrew Murray <andrew.murray@arm.com>,
Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Masami Hiramatsu <masami.hiramatsu@linaro.org>,
Jassi Brar <jaswinder.singh@linaro.org>,
Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Subject: [PATCH 1/2] PCI: uniphier: Set mode register to host mode
Date: Thu, 7 Nov 2019 13:58:14 +0900 [thread overview]
Message-ID: <1573102695-7018-1-git-send-email-hayashi.kunihiko@socionext.com> (raw)
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@socionext.com>
---
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);
+
/* use auxiliary power detection */
val = readl(priv->base + PCL_APP_PM0);
val |= PCL_SYS_AUX_PWR_DET;
--
2.7.4
next reply other threads:[~2019-11-07 4:59 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-07 4:58 Kunihiko Hayashi [this message]
2019-11-07 4:58 ` [PATCH 2/2] PCI: uniphier: Add checking whether PERST# is deasserted Kunihiko Hayashi
2019-11-07 10:02 ` Andrew Murray
2019-11-07 11:52 ` Kunihiko Hayashi
2019-11-07 12:46 ` Andrew Murray
2019-11-08 7:30 ` Kunihiko Hayashi
2019-11-08 9:59 ` Andrew Murray
2019-11-21 16:47 ` Lorenzo Pieralisi
2019-11-22 11:53 ` Kunihiko Hayashi
2019-12-04 10:05 ` Kunihiko Hayashi
2019-12-06 6:58 ` Kishon Vijay Abraham I
2019-12-06 8:58 ` Kunihiko Hayashi
2019-12-06 9:01 ` Kishon Vijay Abraham I
2019-12-09 2:35 ` Kunihiko Hayashi
2019-11-07 9:52 ` [PATCH 1/2] PCI: uniphier: Set mode register to host mode Andrew Murray
2019-11-21 16:49 ` Lorenzo Pieralisi
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