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Date: Fri, 10 Oct 2014 14:46:55 +0200
From: Tomeu Vizoso <tomeu.vizoso@...labora.com>
To: Stephen Warren <swarren@...dia.com>
Cc: Rhyland Klein <rklein@...dia.com>,
Mikko Perttunen <mikko.perttunen@...si.fi>,
Thierry Reding <treding@...dia.com>,
Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
Mikko Perttunen <mperttunen@...dia.com>,
Tomeu Vizoso <tomeu.vizoso@...labora.com>,
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>,
Thierry Reding <thierry.reding@...il.com>,
devicetree@...r.kernel.org, linux-tegra@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 04/10] of: Add Tegra124 EMC bindings
From: Mikko Perttunen <mperttunen@...dia.com>
Add binding documentation for the nvidia,tegra124-emc device tree node.
Signed-off-by: Mikko Perttunen <mperttunen@...dia.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com>
---
.../bindings/memory-controllers/tegra-emc.txt | 41 ++++++++++++++++++++++
1 file changed, 41 insertions(+)
create mode 100644 Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
diff --git a/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
new file mode 100644
index 0000000..6282c6b
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
@@ -0,0 +1,41 @@
+Tegra124 SoC EMC controller
+
+Required properties :
+- compatible : "nvidia,tegra124-emc".
+- reg : Should contain 1 entry:
+ - EMC register set
+
+The node should contain a "timings@i" subnode for each supported RAM type
+ (see field RAM_CODE in register PMC_STRAPPING_OPT_A)
+Required properties for "timings@i" nodes :
+- nvidia,ram-code : Should contain the value of RAM_CODE this timing set
+ is used for.
+
+Each "timings@i" node should contain "timing@j" subnodes. One "timing@j"
+ node should exist for each supported EMC clock rate.
+Required properties for "timing@j" nodes :
+- clock-frequency : Should contain the memory clock rate.
+- nvidia,parent-clock-frequency : Should contain the rate of the EMC
+ clock's parent clock.
+- clocks : Must contain an entry for each entry in clock-names.
+ See ../clocks/clock-bindings.txt for details.
+- clock-names : Must include the following entries:
+ - emc-parent : EMC's parent clock.
+- The following properties contain EMC timing characterization values:
+ - nvidia,emc-zcal-cnt-long
+ - nvidia,emc-auto-cal-interval
+ - nvidia,emc-ctt-term-ctrl
+ - nvidia,emc-cfg
+ - nvidia,emc-cfg-2
+ - nvidia,emc-sel-dpd-ctrl
+ - nvidia,emc-cfg-dig-dll
+ - nvidia,emc-bgbias-ctl0
+ - nvidia,emc-auto-cal-config
+ - nvidia,emc-auto-cal-config2
+ - nvidia,emc-auto-cal-config3
+ - nvidia,emc-mode-reset
+ - nvidia,emc-mode-1
+ - nvidia,emc-mode-2
+ - nvidia,emc-mode-4
+- nvidia,emc-configuration : EMC timing characterization data written to
+ EMC registers.
--
1.9.3
--
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