Linux-ARM-Kernel Archive on lore.kernel.org
 help / color / Atom feed
From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: "A.s. Dong" <aisheng.dong@nxp.com>,
	Leonard Crestez <leonard.crestez@nxp.com>,
	Richard Zhu <hongxing.zhu@nxp.com>,
	linux-arm-kernel@lists.infradead.org,
	Andrey Smirnov <andrew.smirnov@gmail.com>,
	linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
	Fabio Estevam <fabio.estevam@nxp.com>,
	linux-imx@nxp.com, Bjorn Helgaas <bhelgaas@google.com>,
	Trent Piepho <tpiepho@impinj.com>,
	Chris Healy <cphealy@gmail.com>,
	Lucas Stach <l.stach@pengutronix.de>
Subject: [PATCH v4 2/4] PCI: imx6: Mark PHY functions as i.MX6 specific
Date: Fri,  4 Jan 2019 08:53:33 -0800
Message-ID: <20190104165335.13205-3-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20190104165335.13205-1-andrew.smirnov@gmail.com>

PCIE PHY IP block on i.MX7D differs from the one used on i.MX6 family,
so none of the code in current implementation of imx6_setup_phy_mpll()
is applicable.

Tested-by: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: "A.s. Dong" <aisheng.dong@nxp.com>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
Cc: linux-imx@nxp.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-pci@vger.kernel.org
---
 drivers/pci/controller/dwc/pci-imx6.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index efff3d5e9162..c55d93c1187d 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -41,8 +41,11 @@ enum imx6_pcie_variants {
 	IMX7D,
 };
 
+#define IMX6_PCIE_FLAG_IMX6_PHY			BIT(0)
+
 struct imx6_pcie_drvdata {
 	enum imx6_pcie_variants variant;
+	u32 flags;
 };
 
 struct imx6_pcie {
@@ -256,6 +259,9 @@ static void imx6_pcie_reset_phy(struct imx6_pcie *imx6_pcie)
 {
 	u32 tmp;
 
+	if (!(imx6_pcie->drvdata->flags & IMX6_PCIE_FLAG_IMX6_PHY))
+		return;
+
 	pcie_phy_read(imx6_pcie, PHY_RX_OVRD_IN_LO, &tmp);
 	tmp |= (PHY_RX_OVRD_IN_LO_RX_DATA_EN |
 		PHY_RX_OVRD_IN_LO_RX_PLL_EN);
@@ -573,6 +579,9 @@ static int imx6_setup_phy_mpll(struct imx6_pcie *imx6_pcie)
 	int mult, div;
 	u32 val;
 
+	if (!(imx6_pcie->drvdata->flags & IMX6_PCIE_FLAG_IMX6_PHY))
+		return 0;
+
 	switch (phy_rate) {
 	case 125000000:
 		/*
@@ -1088,12 +1097,15 @@ static void imx6_pcie_shutdown(struct platform_device *pdev)
 static const struct imx6_pcie_drvdata drvdata[] = {
 	[IMX6Q] = {
 		.variant = IMX6Q,
+		.flags = IMX6_PCIE_FLAG_IMX6_PHY,
 	},
 	[IMX6SX] = {
 		.variant = IMX6SX,
+		.flags = IMX6_PCIE_FLAG_IMX6_PHY,
 	},
 	[IMX6QP] = {
 		.variant = IMX6QP,
+		.flags = IMX6_PCIE_FLAG_IMX6_PHY,
 	},
 	[IMX7D] = {
 		.variant = IMX7D,
-- 
2.20.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-04 16:53 [PATCH v4 0/4] PCIE support for i.MX8MQ Andrey Smirnov
2019-01-04 16:53 ` [PATCH v4 1/4] PCI: imx6: introduce drvdata Andrey Smirnov
2019-01-04 16:53 ` Andrey Smirnov [this message]
2019-01-04 16:53 ` [PATCH v4 3/4] PCI: imx6: Convert DIRECT_SPEED_CHANGE quirk code to use a flag Andrey Smirnov
2019-01-08  8:21   ` Lucas Stach
2019-01-04 16:53 ` [PATCH v4 4/4] PCI: imx6: Add support for i.MX8MQ Andrey Smirnov
2019-01-08  8:23   ` Lucas Stach
2019-01-11 19:53   ` Rob Herring
2019-01-12 21:28     ` Andrey Smirnov

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190104165335.13205-3-andrew.smirnov@gmail.com \
    --to=andrew.smirnov@gmail.com \
    --cc=aisheng.dong@nxp.com \
    --cc=bhelgaas@google.com \
    --cc=cphealy@gmail.com \
    --cc=fabio.estevam@nxp.com \
    --cc=hongxing.zhu@nxp.com \
    --cc=l.stach@pengutronix.de \
    --cc=leonard.crestez@nxp.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-imx@nxp.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pci@vger.kernel.org \
    --cc=lorenzo.pieralisi@arm.com \
    --cc=tpiepho@impinj.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-ARM-Kernel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-arm-kernel/0 linux-arm-kernel/git/0.git
	git clone --mirror https://lore.kernel.org/linux-arm-kernel/1 linux-arm-kernel/git/1.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-arm-kernel linux-arm-kernel/ https://lore.kernel.org/linux-arm-kernel \
		linux-arm-kernel@lists.infradead.org infradead-linux-arm-kernel@archiver.kernel.org
	public-inbox-index linux-arm-kernel


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-arm-kernel


AGPL code for this site: git clone https://public-inbox.org/ public-inbox