From cf83cea9e2c497354ccb9fc873cf0ec40ce7c3e9 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@xxxxxxxxxx>
Date: Wed, 22 Jun 2016 13:42:14 +0200
Subject: [PATCH 1/5] dt-bindings: Add binding for brcm,bcm2835-sdhost.
Patch-mainline: Submitted, http://www.spinics.net/lists/linux-mmc/msg37743.html
References: bsc#983145
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@xxxxxxxxxx>
Acked-by: Michal Marek <mmarek@suse.com>
---
.../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 59476fbdbfa1..3cc74e222f97 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 000000000000..074992c15de6
--- /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@7e202000 {
+ compatible = "brcm,bcm2835-sdhost";
+ reg = <0x7e202000 0x100>;
+ interrupts = <2 24>;
+ clocks = <&clocks BCM2835_CLOCK_VPU>;
+ dmas = <&dma 13>,
+ <&dma 13>;
+ dma-names = "tx", "rx";
+};
--
2.6.2