This patch adds the bindings for the Page-based Address Translator (PAT)
present on various TI SoCs. A Page-based Address Translator (PAT) device
performs address translation using tables stored in an internal SRAM.
Each PAT supports a set number of pages, each occupying a programmable
4KB, 16KB, 64KB, or 1MB of addresses in a window for which an incoming
transaction will be translated.
Signed-off-by: Andrew F. Davis <afd@xxxxxx>
---
.../devicetree/bindings/misc/ti,pat.txt | 34 +++++++++++++++++++
1 file changed, 34 insertions(+)
create mode 100644 Documentation/devicetree/bindings/misc/ti,pat.txt
diff --git a/Documentation/devicetree/bindings/misc/ti,pat.txt b/Documentation/devicetree/bindings/misc/ti,pat.txt
new file mode 100644
index 000000000000..fac20d45ad4c
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/ti,pat.txt
@@ -0,0 +1,34 @@
+Texas Instruments Page-based Address Translator (PAT) driver binding
+--------------------------------------------------------------------
+
+A Page-based Address Translator (PAT) device performs address translation
+using tables stored in an internal SRAM. Each PAT supports a set number of
+pages, each occupying a programmable 4KB, 16KB, 64KB, or 1MB of addresses
+in a window for which an incoming transaction will be translated.
+
+TI-PAT controller Device Node
+=============================
+
+The TI-PAT node describes the Texas Instrument's Page-based Address
+Translator (PAT).
+
+Required properties:
+-------------------
+- compatible: should be "ti,j721e-pat"
+- reg-names:
+ mmrs - Memory mapped registers region
+ table - Location of the table of translation pages
+ window - Window of memory addresses translated by this PAT
+- reg: register addresses corresponding to the above
+
+Example:
+
+navss_pat0: pat@31010000 {
+ compatible = "ti,j721e-pat";
+ reg = <0x00 0x31010000 0x00 0x00000100>,
+ <0x00 0x36400000 0x00 0x00040000>,
+ <0x48 0x00000000 0x00 0x40000000>;
+ reg-names = "mmrs",
+ "table",
+ "window";
+};
--
2.17.1
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