linux-kernel - [PATCH v6 4/8] dt-bindings: mmc: Add optional generic properties for mmc

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Date:   Wed, 20 Nov 2019 12:17:25 +0530
From:   Manish Narani <manish.narani@...inx.com>
To:     ulf.hansson@...aro.org, robh+dt@...nel.org, mark.rutland@....com,
        adrian.hunter@...el.com, michal.simek@...inx.com,
        jolly.shah@...inx.com, rajan.vaja@...inx.com,
        nava.manne@...inx.com, mdf@...nel.org, manish.narani@...inx.com
Cc:     linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        git@...inx.com
Subject: [PATCH v6 4/8] 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 <manish.narani@...inx.com>
---
 .../devicetree/bindings/mmc/mmc-controller.yaml     | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/mmc-controller.yaml b/Documentation/devicetree/bindings/mmc/mmc-controller.yaml
index 080754e0ef35..305b2016bc17 100644
--- 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>;
     };
 
   - |
-- 
2.17.1