From mboxrd@z Thu Jan 1 00:00:00 1970 From: Faiz Abbas Subject: [PATCH v4 01/11] dt-bindings: sdhci-omap: Add properties for using external dma Date: Mon, 6 Jan 2020 16:31:23 +0530 Message-ID: <20200106110133.13791-2-faiz_abbas@ti.com> References: <20200106110133.13791-1-faiz_abbas@ti.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20200106110133.13791-1-faiz_abbas@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-mmc@vger.kernel.org Cc: kishon@ti.com, adrian.hunter@intel.com, mark.rutland@arm.com, robh+dt@kernel.org, ulf.hansson@linaro.org, tony@atomide.com, faiz_abbas@ti.com List-Id: linux-omap@vger.kernel.org From: Chunyan Zhang 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 Signed-off-by: Faiz Abbas Reviewed-by: Rob Herring --- 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- : 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