linux-kernel - [PATCH v3 2/6] remoteproc: dt: Provide bindings for ST's Remote Processor Controller driver

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Message-Id: <1441208289-17330-3-git-send-email-lee.jones@linaro.org>
Date:	Wed,  2 Sep 2015 16:38:05 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:	kernel@...inux.com, ohad@...ery.com, devicetree@...r.kernel.org,
	Nathan_Lynch@...tor.com, f.fainelli@...il.com,
	Lee Jones <lee.jones@...aro.org>,
	Ludovic Barre <ludovic.barre@...com>
Subject: [PATCH v3 2/6] remoteproc: dt: Provide bindings for ST's Remote Processor Controller driver

Signed-off-by: Ludovic Barre <ludovic.barre@...com>
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 .../devicetree/bindings/remoteproc/st-rproc.txt    | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/st-rproc.txt

diff --git a/Documentation/devicetree/bindings/remoteproc/st-rproc.txt b/Documentation/devicetree/bindings/remoteproc/st-rproc.txt
new file mode 100644
index 0000000..c3848f6
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/st-rproc.txt
@@ -0,0 +1,35 @@
+STMicroelectronics Co-Processor Bindings
+----------------------------------------
+
+This binding provides support for adjunct processors found on ST SoCs.
+
+Co-processors can be controlled from the bootloader or the primary OS. If
+the bootloader starts a co-processor, the primary OS must detect its state
+and act accordingly.
+
+Required properties:
+- compatible		Should be one of:
+				"st,st231-rproc"
+				"st,st40-rproc"
+- reg			Size and length of reserved co-processor memory
+- resets		Reset lines (See: ../reset/reset.txt)
+- reset-names		Must be "sw_reset" and "pwr_reset"
+- clocks		Clock for co-processor (See: ../clock/clock-bindings.txt)
+- clock-frequency	Clock frequency to set co-processor at if the bootloader
+			hasn't already done so
+- st,syscfg		System configuration register which holds the boot vector
+			for the co-processor
+				1st cell: Phandle to syscon block
+				2nd cell: Boot vector register offset
+
+Example:
+
+	st231-audio@...00000 {
+		compatible	= "st,st231-rproc";
+		reg		= <0xbae00000 0x01000000>;
+		resets		= <&softreset STIH407_ST231_AUD_SOFTRESET>;
+		reset-names	= "sw_reset";
+		clocks		= <&clk_s_c0_flexgen CLK_ST231_AUD_0>;
+		clock-frequency	= <600000000>;
+		st,syscfg	= <&syscfg_core 0x228>;
+	};
-- 
1.9.1

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