Linux-mmc Archive on lore.kernel.org
 help / color / Atom feed
From: Faiz Abbas <faiz_abbas@ti.com>
To: <linux-omap@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<devicetree@vger.kernel.org>, <linux-mmc@vger.kernel.org>
Cc: <adrian.hunter@intel.com>, <kishon@ti.com>,
	<mark.rutland@arm.com>, <robh+dt@kernel.org>,
	<ulf.hansson@linaro.org>, <faiz_abbas@ti.com>, <tony@atomide.com>
Subject: [PATCH v5 01/10] dt-bindings: sdhci-omap: Add properties for using external dma
Date: Thu, 16 Jan 2020 16:21:45 +0530
Message-ID: <20200116105154.7685-2-faiz_abbas@ti.com> (raw)
In-Reply-To: <20200116105154.7685-1-faiz_abbas@ti.com>

From: Chunyan Zhang <zhang.chunyan@linaro.org>

sdhci-omap can support both external dma controller via dmaengine
framework as well as ADMA which standard SD host controller
provides. Add binding documentation for these external dma properties.

Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/mmc/sdhci-omap.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/sdhci-omap.txt b/Documentation/devicetree/bindings/mmc/sdhci-omap.txt
index 72c4dec7e1db..97efb01617dd 100644
--- a/Documentation/devicetree/bindings/mmc/sdhci-omap.txt
+++ b/Documentation/devicetree/bindings/mmc/sdhci-omap.txt
@@ -15,6 +15,13 @@ Required properties:
 		 "hs200_1_8v",
 - pinctrl-<n> : Pinctrl states as described in bindings/pinctrl/pinctrl-bindings.txt
 
+Optional properties:
+- dmas:		List of DMA specifiers with the controller specific format as described
+		in the generic DMA client binding. A tx and rx specifier is required.
+- dma-names:	List of DMA request names. These strings correspond 1:1 with the
+		DMA specifiers listed in dmas. The string naming is to be "tx"
+		and "rx" for TX and RX DMA requests, respectively.
+
 Example:
 	mmc1: mmc@4809c000 {
 		compatible = "ti,dra7-sdhci";
@@ -22,4 +29,6 @@ Example:
 		ti,hwmods = "mmc1";
 		bus-width = <4>;
 		vmmc-supply = <&vmmc>; /* phandle to regulator node */
+		dmas = <&sdma 61 &sdma 62>;
+		dma-names = "tx", "rx";
 	};
-- 
2.19.2


  reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-16 10:51 [PATCH v5 00/10] Port am335x and am437x devices to sdhci-omap Faiz Abbas
2020-01-16 10:51 ` Faiz Abbas [this message]
2020-01-16 10:51 ` [PATCH v5 02/10] mmc: sdhci: Factor out some operations set to their own functions Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 03/10] mmc: sdhci: add support for using external DMA devices Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 04/10] mmc: sdhci-omap: Add using external dma Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 05/10] mmc: sdhci: Convert sdhci_set_timeout_irq() to non-static Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 06/10] mmc: sdhci: Refactor sdhci_set_timeout() Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 07/10] mmc: sdhci-omap: Disable data timeout interrupt during erase Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 08/10] dt-bindings: sdhci-omap: Add am335x and am437x specific bindings Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 09/10] mmc: sdhci-omap: Add am335x and am437x specific compatibles Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 10/10] mmc: sdhci-omap: Add special reset capability Faiz Abbas
2020-01-16 15:37 ` [PATCH v5 00/10] Port am335x and am437x devices to sdhci-omap Ulf Hansson

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=20200116105154.7685-2-faiz_abbas@ti.com \
    --to=faiz_abbas@ti.com \
    --cc=adrian.hunter@intel.com \
    --cc=devicetree@vger.kernel.org \
    --cc=kishon@ti.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mmc@vger.kernel.org \
    --cc=linux-omap@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=robh+dt@kernel.org \
    --cc=tony@atomide.com \
    --cc=ulf.hansson@linaro.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

Linux-mmc Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-mmc/0 linux-mmc/git/0.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-mmc linux-mmc/ https://lore.kernel.org/linux-mmc \
		linux-mmc@vger.kernel.org
	public-inbox-index linux-mmc

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-mmc


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