From: Mikko Perttunen <mperttunen@xxxxxxxxxx> Add binding documentation for the nvidia,tegra124-emc device tree node. Signed-off-by: Mikko Perttunen <mperttunen@xxxxxxxxxx> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx> --- .../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 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
