dt-bindings: mmc: Add optional generic properties for mmc

Add optional properties for mmc hosts which are used to set clk delays for different speed modes in the controller. Signed-off-by: Manish Narani <[email protected]> Signed-off-by: Ulf Hansson <[email protected]> Link : https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/Documentation/devicetree/bindings/mmc/mmc-controller.yaml?id=fec81c5bca2499b4a263667860018c2ce47f4f51 State: upstream (fec81c5)
JackWANGLEI2020 · Feb 12, 2020 · 0713b6f · 0713b6f
1 parent 96e9c77
commit 0713b6f
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/Documentation/devicetree/bindings/mmc/mmc-controller.yaml b/Documentation/devicetree/bindings/mmc/mmc-controller.yaml
@@ -333,6 +333,18 @@ patternProperties:
     required:
       - reg
 
+  "^clk-phase-(legacy|sd-hs|mmc-(hs|hs[24]00|ddr52)|uhs-(sdr(12|25|50|104)|ddr50))$":
+    minItems: 2
+    maxItems: 2
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32
+      - minimum: 0
+        maximum: 359
+    description:
+      Set the clock (phase) delays which are to be configured in the
+      controller while switching to particular speed mode. These values
+      are in pair of degrees.
+
 dependencies:
   cd-debounce-delay-ms: [ cd-gpios ]
   fixed-emmc-driver-type: [ non-removable ]
@@ -351,6 +363,7 @@ examples:
         keep-power-in-suspend;
         wakeup-source;
         mmc-pwrseq = <&sdhci0_pwrseq>;
+        clk-phase-sd-hs = <63>, <72>;
     };
 
   - |