ARM: dts: dra7: Add ocmcram nodes

Add all ocmcram nodes to dra7.dtsi using the generic mmio-sram driver.
DRA7xx and AM57xx families of SoCs can contain three ocmcram regions of
SRAM, one of 512kb and also an optional two additional of 1Mb each. Mark
the two additional 1MB regions of SRAM as disabled as only ocmcmram1 is
on all variants of the SoCs, then depending on which specific variant
is in use the ocmcram2 and ocmcram3 nodes can be enabled in the board
dts file if the data manual for that part number indicates the ocmcram
region is available.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Reviewed-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index 5a21e46ce487d8a4da396a4a786d9e2e54eb8d37..4847ef9780cce2ad96688cdae3e415b23c751b4f 100644 (file)
--- a/arch/arm/boot/dts/dra7.dtsi
+++ b/arch/arm/boot/dts/dra7.dtsi
@@ -304,6 +304,38 @@
                        };
                };
 
+               ocmcram1: ocmcram@40300000 {
+                       compatible = "mmio-sram";
+                       reg = <0x40300000 0x80000>;
+                       ranges = <0x0 0x40300000 0x80000>;
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+               };
+
+               /*
+                * NOTE: ocmcram2 and ocmcram3 are not available on all
+                * DRA7xx and AM57xx variants. Confirm availability in
+                * the data manual for the exact part number in use
+                * before enabling these nodes in the board dts file.
+                */
+               ocmcram2: ocmcram@40400000 {
+                       status = "disabled";
+                       compatible = "mmio-sram";
+                       reg = <0x40400000 0x100000>;
+                       ranges = <0x0 0x40400000 0x100000>;
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+               };
+
+               ocmcram3: ocmcram@40500000 {
+                       status = "disabled";
+                       compatible = "mmio-sram";
+                       reg = <0x40500000 0x100000>;
+                       ranges = <0x0 0x40500000 0x100000>;
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+               };
+
                bandgap: bandgap@4a0021e0 {
                        reg = <0x4a0021e0 0xc
                                0x4a00232c 0xc