linux-kernel - [PATCH v11 02/15] dt-bindings: mmc: cdns: Add AMD Pensando Elba SoC

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Message-ID: <20230312004445.15913-3-blarson@amd.com>
Date:   Sat, 11 Mar 2023 16:44:32 -0800
From:   Brad Larson <blarson@....com>
To:     <linux-arm-kernel@...ts.infradead.org>
CC:     <linux-kernel@...r.kernel.org>, <linux-mmc@...r.kernel.org>,
        <linux-spi@...r.kernel.org>, <adrian.hunter@...el.com>,
        <alcooperx@...il.com>, <andy.shevchenko@...il.com>,
        <arnd@...db.de>, <blarson@....com>, <brendan.higgins@...ux.dev>,
        <briannorris@...omium.org>, <brijeshkumar.singh@....com>,
        <catalin.marinas@....com>, <davidgow@...gle.com>,
        <gsomlo@...il.com>, <gerg@...ux-m68k.org>, <krzk@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <lee@...nel.org>,
        <lee.jones@...aro.org>, <broonie@...nel.org>,
        <yamada.masahiro@...ionext.com>, <p.zabel@...gutronix.de>,
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        <tonyhuang.sunplus@...il.com>, <ulf.hansson@...aro.org>,
        <vaishnav.a@...com>, <will@...nel.org>,
        <devicetree@...r.kernel.org>
Subject: [PATCH v11 02/15] dt-bindings: mmc: cdns: Add AMD Pensando Elba SoC

AMD Pensando Elba ARM 64-bit SoC is integrated with this IP and
explicitly controls byte-lane enables.

Signed-off-by: Brad Larson <blarson@....com>
---

v11 changes:
- Remove resets description and reset-names
- Add descriptions for amd,pensando-elba-sd4hc reg items

v10 changes:
- Move reset-names property definition next to existing resets prop
- Move allOf to the bottom and set resets/reset-names required only for pensando
- Fix reg maxItems for existing, must be 1

v9 changes:
- Add reset-names and resets properties
- Add if/then on property amd,pensando-elba-sd4hc to set reg property
  values for minItems and maxItems

---
 .../devicetree/bindings/mmc/cdns,sdhci.yaml   | 28 ++++++++++++++++---
 1 file changed, 24 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
index adacd0535c14..3c511c02e8a6 100644
--- a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
+++ b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
@@ -9,19 +9,18 @@ title: Cadence SD/SDIO/eMMC Host Controller (SD4HC)
 maintainers:
   - Masahiro Yamada <yamada.masahiro@...ionext.com>
 
-allOf:
-  - $ref: mmc-controller.yaml
-
 properties:
   compatible:
     items:
       - enum:
+          - amd,pensando-elba-sd4hc
           - microchip,mpfs-sd4hc
           - socionext,uniphier-sd4hc
       - const: cdns,sd4hc
 
   reg:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
 
   interrupts:
     maxItems: 1
@@ -120,6 +119,27 @@ required:
   - interrupts
   - clocks
 
+allOf:
+  - $ref: mmc-controller.yaml
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: amd,pensando-elba-sd4hc
+    then:
+      properties:
+        reg:
+          items:
+            - description: Host controller registers
+            - description: Elba byte-lane enable register for writes
+      required:
+        - resets
+    else:
+      properties:
+        resets: false
+        reg:
+          maxItems: 1
+
 unevaluatedProperties: false
 
 examples:
-- 
2.17.1