dt: bindings: Move tegra20-emc binding to memory-controllers directory

Move tegra20-emc binding to the memory-controllers directory for
consistency with the other Tegra memory bindings.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-emc.txt b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-emc.txt
deleted file mode 100644 (file)
index add9536..0000000
--- a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-emc.txt
+++ /dev/null
@@ -1,104 +0,0 @@
-Embedded Memory Controller
-
-Properties:
-- name : Should be emc
-- #address-cells : Should be 1
-- #size-cells : Should be 0
-- compatible : Should contain "nvidia,tegra20-emc".
-- reg : Offset and length of the register set for the device
-- nvidia,use-ram-code : If present, the sub-nodes will be addressed
-  and chosen using the ramcode board selector. If omitted, only one
-  set of tables can be present and said tables will be used
-  irrespective of ram-code configuration.
-- interrupts : Should contain EMC General interrupt.
-- clocks : Should contain EMC clock.
-
-Child device nodes describe the memory settings for different configurations and clock rates.
-
-Example:
-
-       memory-controller@7000f400 {
-               #address-cells = < 1 >;
-               #size-cells = < 0 >;
-               compatible = "nvidia,tegra20-emc";
-               reg = <0x7000f4000 0x200>;
-               interrupts = <0 78 0x04>;
-               clocks = <&tegra_car TEGRA20_CLK_EMC>;
-       }
-
-
-Embedded Memory Controller ram-code table
-
-If the emc node has the nvidia,use-ram-code property present, then the
-next level of nodes below the emc table are used to specify which settings
-apply for which ram-code settings.
-
-If the emc node lacks the nvidia,use-ram-code property, this level is omitted
-and the tables are stored directly under the emc node (see below).
-
-Properties:
-
-- name : Should be emc-tables
-- nvidia,ram-code : the binary representation of the ram-code board strappings
-  for which this node (and children) are valid.
-
-
-
-Embedded Memory Controller configuration table
-
-This is a table containing the EMC register settings for the various
-operating speeds of the memory controller. They are always located as
-subnodes of the emc controller node.
-
-There are two ways of specifying which tables to use:
-
-* The simplest is if there is just one set of tables in the device tree,
-  and they will always be used (based on which frequency is used).
-  This is the preferred method, especially when firmware can fill in
-  this information based on the specific system information and just
-  pass it on to the kernel.
-
-* The slightly more complex one is when more than one memory configuration
-  might exist on the system.  The Tegra20 platform handles this during
-  early boot by selecting one out of possible 4 memory settings based
-  on a 2-pin "ram code" bootstrap setting on the board. The values of
-  these strappings can be read through a register in the SoC, and thus
-  used to select which tables to use.
-
-Properties:
-- name : Should be emc-table
-- compatible : Should contain "nvidia,tegra20-emc-table".
-- reg : either an opaque enumerator to tell different tables apart, or
-  the valid frequency for which the table should be used (in kHz).
-- clock-frequency : the clock frequency for the EMC at which this
-  table should be used (in kHz).
-- nvidia,emc-registers : a 46 word array of EMC registers to be programmed
-  for operation at the 'clock-frequency' setting.
-  The order and contents of the registers are:
-    RC, RFC, RAS, RP, R2W, W2R, R2P, W2P, RD_RCD, WR_RCD, RRD, REXT,
-    WDV, QUSE, QRST, QSAFE, RDV, REFRESH, BURST_REFRESH_NUM, PDEX2WR,
-    PDEX2RD, PCHG2PDEN, ACT2PDEN, AR2PDEN, RW2PDEN, TXSR, TCKE, TFAW,
-    TRPAB, TCLKSTABLE, TCLKSTOP, TREFBW, QUSE_EXTRA, FBIO_CFG6, ODT_WRITE,
-    ODT_READ, FBIO_CFG5, CFG_DIG_DLL, DLL_XFORM_DQS, DLL_XFORM_QUSE,
-    ZCAL_REF_CNT, ZCAL_WAIT_CNT, AUTO_CAL_INTERVAL, CFG_CLKTRIM_0,
-    CFG_CLKTRIM_1, CFG_CLKTRIM_2
-
-               emc-table@166000 {
-                       reg = <166000>;
-                       compatible = "nvidia,tegra20-emc-table";
-                       clock-frequency = < 166000 >;
-                       nvidia,emc-registers = < 0 0 0 0 0 0 0 0 0 0 0 0 0 0
-                                                0 0 0 0 0 0 0 0 0 0 0 0 0 0
-                                                0 0 0 0 0 0 0 0 0 0 0 0 0 0
-                                                0 0 0 0 >;
-               };
-
-               emc-table@333000 {
-                       reg = <333000>;
-                       compatible = "nvidia,tegra20-emc-table";
-                       clock-frequency = < 333000 >;
-                       nvidia,emc-registers = < 0 0 0 0 0 0 0 0 0 0 0 0 0 0
-                                                0 0 0 0 0 0 0 0 0 0 0 0 0 0
-                                                0 0 0 0 0 0 0 0 0 0 0 0 0 0
-                                                0 0 0 0 >;
-               };

diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt
new file mode 100644 (file)
index 0000000..add9536
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt
@@ -0,0 +1,104 @@
+Embedded Memory Controller
+
+Properties:
+- name : Should be emc
+- #address-cells : Should be 1
+- #size-cells : Should be 0
+- compatible : Should contain "nvidia,tegra20-emc".
+- reg : Offset and length of the register set for the device
+- nvidia,use-ram-code : If present, the sub-nodes will be addressed
+  and chosen using the ramcode board selector. If omitted, only one
+  set of tables can be present and said tables will be used
+  irrespective of ram-code configuration.
+- interrupts : Should contain EMC General interrupt.
+- clocks : Should contain EMC clock.
+
+Child device nodes describe the memory settings for different configurations and clock rates.
+
+Example:
+
+       memory-controller@7000f400 {
+               #address-cells = < 1 >;
+               #size-cells = < 0 >;
+               compatible = "nvidia,tegra20-emc";
+               reg = <0x7000f4000 0x200>;
+               interrupts = <0 78 0x04>;
+               clocks = <&tegra_car TEGRA20_CLK_EMC>;
+       }
+
+
+Embedded Memory Controller ram-code table
+
+If the emc node has the nvidia,use-ram-code property present, then the
+next level of nodes below the emc table are used to specify which settings
+apply for which ram-code settings.
+
+If the emc node lacks the nvidia,use-ram-code property, this level is omitted
+and the tables are stored directly under the emc node (see below).
+
+Properties:
+
+- name : Should be emc-tables
+- nvidia,ram-code : the binary representation of the ram-code board strappings
+  for which this node (and children) are valid.
+
+
+
+Embedded Memory Controller configuration table
+
+This is a table containing the EMC register settings for the various
+operating speeds of the memory controller. They are always located as
+subnodes of the emc controller node.
+
+There are two ways of specifying which tables to use:
+
+* The simplest is if there is just one set of tables in the device tree,
+  and they will always be used (based on which frequency is used).
+  This is the preferred method, especially when firmware can fill in
+  this information based on the specific system information and just
+  pass it on to the kernel.
+
+* The slightly more complex one is when more than one memory configuration
+  might exist on the system.  The Tegra20 platform handles this during
+  early boot by selecting one out of possible 4 memory settings based
+  on a 2-pin "ram code" bootstrap setting on the board. The values of
+  these strappings can be read through a register in the SoC, and thus
+  used to select which tables to use.
+
+Properties:
+- name : Should be emc-table
+- compatible : Should contain "nvidia,tegra20-emc-table".
+- reg : either an opaque enumerator to tell different tables apart, or
+  the valid frequency for which the table should be used (in kHz).
+- clock-frequency : the clock frequency for the EMC at which this
+  table should be used (in kHz).
+- nvidia,emc-registers : a 46 word array of EMC registers to be programmed
+  for operation at the 'clock-frequency' setting.
+  The order and contents of the registers are:
+    RC, RFC, RAS, RP, R2W, W2R, R2P, W2P, RD_RCD, WR_RCD, RRD, REXT,
+    WDV, QUSE, QRST, QSAFE, RDV, REFRESH, BURST_REFRESH_NUM, PDEX2WR,
+    PDEX2RD, PCHG2PDEN, ACT2PDEN, AR2PDEN, RW2PDEN, TXSR, TCKE, TFAW,
+    TRPAB, TCLKSTABLE, TCLKSTOP, TREFBW, QUSE_EXTRA, FBIO_CFG6, ODT_WRITE,
+    ODT_READ, FBIO_CFG5, CFG_DIG_DLL, DLL_XFORM_DQS, DLL_XFORM_QUSE,
+    ZCAL_REF_CNT, ZCAL_WAIT_CNT, AUTO_CAL_INTERVAL, CFG_CLKTRIM_0,
+    CFG_CLKTRIM_1, CFG_CLKTRIM_2
+
+               emc-table@166000 {
+                       reg = <166000>;
+                       compatible = "nvidia,tegra20-emc-table";
+                       clock-frequency = < 166000 >;
+                       nvidia,emc-registers = < 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+                                                0 0 0 0 0 0 0 0 0 0 0 0 0 0
+                                                0 0 0 0 0 0 0 0 0 0 0 0 0 0
+                                                0 0 0 0 >;
+               };
+
+               emc-table@333000 {
+                       reg = <333000>;
+                       compatible = "nvidia,tegra20-emc-table";
+                       clock-frequency = < 333000 >;
+                       nvidia,emc-registers = < 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+                                                0 0 0 0 0 0 0 0 0 0 0 0 0 0
+                                                0 0 0 0 0 0 0 0 0 0 0 0 0 0
+                                                0 0 0 0 >;
+               };