From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomeu Vizoso Subject: [PATCH 04/10] of: Add Tegra124 EMC bindings Date: Fri, 10 Oct 2014 14:46:55 +0200 Message-ID: <1412945262-6068-5-git-send-email-tomeu.vizoso@collabora.com> References: <1412945262-6068-1-git-send-email-tomeu.vizoso@collabora.com> Return-path: In-Reply-To: <1412945262-6068-1-git-send-email-tomeu.vizoso-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Stephen Warren Cc: Rhyland Klein , Mikko Perttunen , Thierry Reding , Javier Martinez Canillas , Mikko Perttunen , Tomeu Vizoso , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Stephen Warren , Thierry Reding , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org From: Mikko Perttunen Add binding documentation for the nvidia,tegra124-emc device tree node. Signed-off-by: Mikko Perttunen Signed-off-by: Tomeu Vizoso --- .../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