From: Kishon Vijay Abraham I <kishon@ti.com>
To: Bjorn Helgaas <bhelgaas@google.com>,
Arnd Bergmann <arnd@arndb.de>, Jingoo Han <jingoohan1@gmail.com>,
<hch@infradead.org>, <Joao.Pinto@synopsys.com>,
<mingkai.hu@nxp.com>, <m-karicheri2@ti.com>,
Pratyush Anand <pratyush.anand@gmail.com>
Cc: <linux-pci@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-omap@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
Joao Pinto <jpinto@synopsys.com>,
Rob Herring <robh+dt@kernel.org>, <kishon@ti.com>,
<nsekhar@ti.com>
Subject: [RFC PATCH 11/11] HACK: pci: controller: dra7xx: disable smart idle
Date: Wed, 14 Sep 2016 10:42:07 +0530 [thread overview]
Message-ID: <1473829927-20466-12-git-send-email-kishon@ti.com> (raw)
In-Reply-To: <1473829927-20466-1-git-send-email-kishon@ti.com>
Smart idle prevents RC to access the memory space of this
controller. Set the idle mode to smart idle wakeup. This
should ideally be done in hwmod. Till it's figured out how
to configure it in hwmod, mark this as HACK.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
drivers/pci/controller/pci-dra7xx.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/pci/controller/pci-dra7xx.c b/drivers/pci/controller/pci-dra7xx.c
index 5b49367..31211e6 100644
--- a/drivers/pci/controller/pci-dra7xx.c
+++ b/drivers/pci/controller/pci-dra7xx.c
@@ -30,6 +30,14 @@
/* PCIe controller wrapper DRA7XX configuration registers */
+#define PCIECTRL_DRA7XX_CONF_SYSCONFIG 0x0010
+#define SIDLE_MASK 3
+#define SIDLE_SHIFT 2
+#define SIDLE_FORCE 0x0
+#define SIDLE_NO 0x1
+#define SIDLE_SMART 0x2
+#define SIDLE_SMART_WKUP 0x3
+
#define PCIECTRL_DRA7XX_CONF_IRQSTATUS_MAIN 0x0024
#define PCIECTRL_DRA7XX_CONF_IRQENABLE_SET_MAIN 0x0028
#define ERR_SYS BIT(0)
@@ -606,6 +614,10 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev)
goto err_gpio;
break;
case DW_PCIE_EP_TYPE:
+ reg = dra7xx_pcie_readl(dra7xx, PCIECTRL_DRA7XX_CONF_SYSCONFIG);
+ reg &= ~(SIDLE_MASK << SIDLE_SHIFT);
+ reg |= SIDLE_SMART_WKUP << SIDLE_SHIFT;
+ dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_SYSCONFIG, reg);
dra7xx_pcie_writel(dra7xx, PCIECTRL_TI_CONF_DEVICE_TYPE,
DEVICE_TYPE_EP);
ret = dra7xx_add_pcie_ep(dra7xx, pdev);
--
1.7.9.5
next prev parent reply other threads:[~2016-09-14 5:15 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-14 5:11 [RFC PATCH 00/11] pci: support for configurable PCI endpoint Kishon Vijay Abraham I
2016-09-14 5:11 ` [RFC PATCH 01/11] pci: endpoint: add EP core layer to enable EP controller and EP functions Kishon Vijay Abraham I
2016-10-12 12:38 ` Christoph Hellwig
2016-09-14 5:11 ` [RFC PATCH 02/11] pci: endpoint: introduce configfs entry for configuring " Kishon Vijay Abraham I
2016-10-12 12:42 ` Christoph Hellwig
2016-09-14 5:11 ` [RFC PATCH 03/11] Documentation: PCI: guide to use PCI Endpoint Core Layer Kishon Vijay Abraham I
2016-09-14 5:12 ` [RFC PATCH 04/11] pci: endpoint: functions: add an EP function to test PCI Kishon Vijay Abraham I
2016-09-14 5:12 ` [RFC PATCH 05/11] pci: rename *host* directory to *controller* Kishon Vijay Abraham I
2016-10-12 12:43 ` Christoph Hellwig
2016-09-14 5:12 ` [RFC PATCH 06/11] pci: controller: split designware into *core* and *host* Kishon Vijay Abraham I
2016-09-14 5:12 ` [RFC PATCH 07/11] pci: controller: designware: Add EP mode support Kishon Vijay Abraham I
2016-09-23 14:41 ` Rob Herring
2016-09-27 11:28 ` Kishon Vijay Abraham I
2016-09-14 5:12 ` [RFC PATCH 08/11] pci: controller: dra7xx: " Kishon Vijay Abraham I
2016-09-23 14:52 ` Rob Herring
2016-09-27 11:34 ` Kishon Vijay Abraham I
2016-09-14 5:12 ` [RFC PATCH 09/11] misc: add a new host side PCI endpoint test driver Kishon Vijay Abraham I
2016-09-14 5:12 ` [RFC PATCH 10/11] ARM: dts: DRA7: Modify pcie1 dt node for EP mode Kishon Vijay Abraham I
2016-09-14 5:12 ` Kishon Vijay Abraham I [this message]
2016-09-14 13:25 ` [RFC PATCH 00/11] pci: support for configurable PCI endpoint Arnd Bergmann
2016-09-15 8:33 ` Kishon Vijay Abraham I
2016-09-22 13:34 ` Arnd Bergmann
2016-09-26 6:08 ` Kishon Vijay Abraham I
2016-09-29 8:31 ` Kishon Vijay Abraham I
2016-10-12 12:21 ` Christoph Hellwig
Reply instructions:
You may reply publicly 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=1473829927-20466-12-git-send-email-kishon@ti.com \
--to=kishon@ti.com \
--cc=Joao.Pinto@synopsys.com \
--cc=arnd@arndb.de \
--cc=bhelgaas@google.com \
--cc=devicetree@vger.kernel.org \
--cc=hch@infradead.org \
--cc=jingoohan1@gmail.com \
--cc=jpinto@synopsys.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=m-karicheri2@ti.com \
--cc=mingkai.hu@nxp.com \
--cc=nsekhar@ti.com \
--cc=pratyush.anand@gmail.com \
--cc=robh+dt@kernel.org \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).