[PATCH v2 1/2] Documentation: dt: Update ti,emif bindings

Dave Gerlach
2017-05-19T17:59:16Z

Update the Texas Instruments EMIF binding document to include the device
tree bindings for ti,emif-am3352 and ti,emif-am4372 which are used by
the ti-emif-sram driver to provide low-level PM functionality.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
---
.../devicetree/bindings/memory-controllers/ti/emif.txt | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/memory-controllers/ti/emif.txt b/Documentation/devicetree/bindings/memory-controllers/ti/emif.txt
index 0db60470ebb6..8c0214b17c2b 100644
--- a/Documentation/devicetree/bindings/memory-controllers/ti/emif.txt
+++ b/Documentation/devicetree/bindings/memory-controllers/ti/emif.txt
@@ -8,6 +8,7 @@ of the EMIF IP and memory parts attached to it.
Required properties:
- compatible : Should be of the form "ti,emif-<ip-rev>" where <ip-rev>
is the IP revision of the specific EMIF instance.
+ For am335x should be ti,emif-am3352.
For am437x should be ti,emif-am4372.

- phy-type : <u32> indicating the DDR phy type. Following are the
@@ -21,6 +22,13 @@ Required properties:
the value shall be "emif<n>" where <n> is the number of the EMIF
instance with base 1.

+Required only for "ti,emif-am3352" and "ti,emif-am4372":
+- sram : Phandles for generic sram driver nodes,
+ first should be type 'protect-exec' for the driver to use to copy
+ and run PM functions, second should be regular pool to be used for
+ data region for code. See Documentation/devicetree/bindings/sram/sram.txt
+ for more details.
+
Optional properties:
- cs1-used : Have this property if CS1 of this EMIF
instance has a memory part attached to it. If there is a memory
@@ -42,7 +50,7 @@ Optional properties:
- hw-caps-temp-alert : Have this property if the controller
has capability for generating SDRAM temperature alerts

-Example:
+-Examples:

emif1: emif@0x4c000000 {
compatible = "ti,emif-4d";
@@ -54,3 +62,11 @@ emif1: emif@0x4c000000 {
hw-caps-ll-interface;
hw-caps-temp-alert;
};
+
+/* From am33xx.dtsi */
+emif: emif@4c000000 {
+ compatible = "ti,emif-am3352";
+ reg = <0x4C000000 0x1000>;
+ sram = <&pm_sram_code
+ &pm_sram_data>;
+};
--
2.13.0