linux-kernel - [PATCH v5 6/8] Documentation: bindings: add dt documentation for rk3399 dmc

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Message-Id: <1470799604-12877-7-git-send-email-hl@rock-chips.com>
Date:	Wed, 10 Aug 2016 11:26:42 +0800
From:	Lin Huang <hl@...k-chips.com>
To:	heiko@...ech.de
Cc:	myungjoo.ham@...sung.com, mark.yao@...k-chips.com,
	cw00.choi@...sung.com, airlied@...ux.ie, mturquette@...libre.com,
	dbasehore@...omium.org, sboyd@...eaurora.org,
	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	dianders@...omium.org, linux-rockchip@...ts.infradead.org,
	kyungmin.park@...sung.com, linux-arm-kernel@...ts.infradead.org,
	tixy@...aro.org, typ@...k-chips.com, sudeep.holla@....com,
	mark.rutland@....com, linux-pm@...r.kernel.org,
	Lin Huang <hl@...k-chips.com>
Subject: [PATCH v5 6/8] Documentation: bindings: add dt documentation for rk3399 dmc

This patch adds the documentation for rockchip rk3399 dmc driver.

Signed-off-by: Lin Huang <hl@...k-chips.com>
---
Changes in v5:
-None

Changes in v4:
-None

Changes in v3:
-None

Changes in v2:
-None 

Changes in v1:
-None

 .../devicetree/bindings/devfreq/rk3399_dmc.txt     | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/devfreq/rk3399_dmc.txt

diff --git a/Documentation/devicetree/bindings/devfreq/rk3399_dmc.txt b/Documentation/devicetree/bindings/devfreq/rk3399_dmc.txt
new file mode 100644
index 0000000..90e9581
--- /dev/null
+++ b/Documentation/devicetree/bindings/devfreq/rk3399_dmc.txt
@@ -0,0 +1,35 @@
+* Rockchip rk3399 dmc device
+
+Required properties:
+- compatible: Must be "rockchip,rk3399-dmc".
+- devfreq-events: Node to get ddr loading, Refer to
+		  Documentation/devicetree/bindings/devfreq/rockchip-dif.txt
+- interrupts: The interrupt number to the cpu. The interrupt specifier format
+	      depends on the interrupt controller. 
+- clocks: Phandles for clock specified in "clock-names" property
+- clock-names : The name of clock used by the DFI, must be "pclk_ddr_mon";
+- operating-points-v2: Refer to Documentation/devicetree/bindings/power/opp.txt
+		       for details.
+- center-supply: Dmc supply node.
+- status: Marks the node enabled/disabled.
+
+Optional properties:
+- ddr_timing: ddr timing need to pass to arm trust firmware
+- upthreshold: the upthreshold to simpleondeamnd policy
+- downdifferential: The downdifferential to simpleondeamnd policy
+
+Example:
+	dmc: dmc {
+		compatible = "rockchip,rk3399-dmc";
+		devfreq-events = <&dfi>;
+		interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cru SCLK_DDRCLK>;
+		clock-names = "dmc_clk";
+		ddr_timing = <&ddr_timing>;
+		operating-points-v2 = <&dmc_opp_table>;
+		center-supply = <&ppvar_centerlogic>;
+		upthreshold = <15>;
+		downdifferential = <10>;
+		status = "disabled";
+	};
+
-- 
1.9.1