dt-bindings: memory: snps,dw-umctl2-ddrc: Use more descriptive device name

The DT-schema name and the corresponding generic compatible string look
inappropriate in the current DW uMCTL2 DDRC DT-bindings:
1. DT-schema name contains undefined vendor-prefix. It's supposed to be
"snps", not "synopsys".
2. DT-schema name has "ecc" suffix. That is a device property, and has
nothing to do with the controller actual name.
3. The controller name is different. It's DW uMCTL2 DDRC. Just DDRC
doesn't identify the IP-core in subject.
4. There is no much point in using the IP-core version in the device name
since it can be retrieved from the corresponding device CSR. Moreover the
DW uMCTL2 DDRC driver doesn't differentiate the IP-core version at the
current state.

In order to fix all the inconsistencies described above we suggest to
rename the DT-schema to "snps,dw-umctl2-ddrc.yaml", deprecate the
compatible string "snps,ddrc-3.80a" and define a new generic device
name as "snps,dw-umctl2-ddrc".

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220910194237.10142-16-Sergey.Semin@baikalelectronics.ru

Documentation/devicetree/bindings/memory-controllers/snps,dw-umctl2-ddrc.yaml

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 %YAML 1.2
 ---
-$id: http://devicetree.org/schemas/memory-controllers/synopsys,ddrc-ecc.yaml#
+$id: http://devicetree.org/schemas/memory-controllers/snps,dw-umctl2-ddrc.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Synopsys DesignWare Universal Multi-Protocol Memory Controller
@@ -24,8 +24,11 @@ description: |
 properties:
   compatible:
     oneOf:
-      - description: Synopsys DW uMCTL2 DDR controller v3.80a
+      - deprecated: true
+        description: Synopsys DW uMCTL2 DDR controller v3.80a
         const: snps,ddrc-3.80a
+      - description: Synopsys DW uMCTL2 DDR controller
+        const: snps,dw-umctl2-ddrc
       - description: Xilinx ZynqMP DDR controller v2.40a
         const: xlnx,zynqmp-ddrc-2.40a
 

MAINTAINERS

@@ -3087,6 +3087,7 @@ W:	http://wiki.xilinx.com
 T:	git https://github.com/Xilinx/linux-xlnx.git
 F:	Documentation/devicetree/bindings/i2c/cdns,i2c-r1p10.yaml
 F:	Documentation/devicetree/bindings/i2c/xlnx,xps-iic-2.00.a.yaml
+F:	Documentation/devicetree/bindings/memory-controllers/snps,dw-umctl2-ddrc.yaml
 F:	Documentation/devicetree/bindings/memory-controllers/xlnx,zynq-ddrc-a05.yaml
 F:	Documentation/devicetree/bindings/spi/xlnx,zynq-qspi.yaml
 F:	arch/arm/mach-zynq/