linux-kernel - [PATCH 20/32] dt-bindings: Add binding for brcm,bcm2835-sdhost.

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Message-Id: <1464817421-8519-21-git-send-email-kraxel@redhat.com>
Date:	Wed,  1 Jun 2016 23:43:29 +0200
From:	Gerd Hoffmann <kraxel@...hat.com>
To:	linux-rpi-kernel@...ts.infradead.org
Cc:	Eric Anholt <eric@...olt.net>, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Stephen Warren <swarren@...dotorg.org>,
	Lee Jones <lee@...nel.org>,
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
	DEVICE TREE BINDINGS),
	linux-arm-kernel@...ts.infradead.org (moderated list:BROADCOM BCM2835
	ARM ARCHITECTURE), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 20/32] dt-bindings: Add binding for brcm,bcm2835-sdhost.

From: Eric Anholt <eric@...olt.net>

This is the other SD controller on the platform, which can be swapped
to the role of SD card host using pin muxing.

Signed-off-by: Eric Anholt <eric@...olt.net>
---
 .../devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt |  3 +++
 .../bindings/mmc/brcm,bcm2835-sdhost.txt           | 24 ++++++++++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhost.txt

diff --git a/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt b/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt
index 59476fb..3cc74e2 100644
--- a/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt
+++ b/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt
@@ -15,4 +15,7 @@ sdhci: sdhci {
 	interrupts = <2 30>;
 	clocks = <&clk_mmc>;
 	bus-width = <4>;
+	dmas = <&dma 13>,
+	       <&dma 13>;
+	dma-names = "tx", "rx";
 };
diff --git a/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhost.txt b/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhost.txt
new file mode 100644
index 0000000..074992c
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhost.txt
@@ -0,0 +1,24 @@
+Broadcom BCM2835 SDHOST controller
+
+This file documents differences between the core properties described
+by mmc.txt and the properties that represent the BCM2835 controller.
+
+Required properties:
+- compatible: Should be "brcm,bcm2835-sdhci".
+- clocks: The clock feeding the SDHOST controller.
+
+Optional properties:
+- dmas: DMA channels for read and write.
+          See Documentation/devicetree/bindings/dma/dma.txt for details
+
+Example:
+
+sdhost: sdhost@...02000 {
+	compatible = "brcm,bcm2835-sdhost";
+	reg = <0x7e202000 0x100>;
+	interrupts = <2 24>;
+	clocks = <&clocks BCM2835_CLOCK_VPU>;
+	dmas = <&dma 13>,
+	       <&dma 13>;
+	dma-names = "tx", "rx";
+};
-- 
1.8.3.1