linux-kernel - [PATCH v10 2/3] dt-bindings: mmc: Add bindings for LiteSDCard

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Date:   Sun,  9 Jan 2022 09:56:36 -0500
From:   Gabriel Somlo <gsomlo@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     robh+dt@...nel.org, devicetree@...r.kernel.org,
        ulf.hansson@...aro.org, linux-mmc@...r.kernel.org,
        kgugala@...micro.com, mholenko@...micro.com, krakoczy@...micro.com,
        mdudek@...ernships.antmicro.com, paulus@...abs.org, joel@....id.au,
        shorne@...il.com, geert@...ux-m68k.org,
        david.abdurachmanov@...ive.com, florent@...oy-digital.fr,
        rdunlap@...radead.org, andy.shevchenko@...il.com, hdanton@...a.com
Subject: [PATCH v10 2/3] dt-bindings: mmc: Add bindings for LiteSDCard

LiteSDCard is a small footprint, configurable SDCard core for
FPGA based SoCs.

Signed-off-by: Gabriel Somlo <gsomlo@...il.com>
Reviewed-by: Geert Uytterhoeven <geert@...ux-m68k.org>
Reviewed-by: Rob Herring <robh@...nel.org>
Reviewed-by: Joel Stanley <joel@....id.au>
---
 .../devicetree/bindings/mmc/litex,mmc.yaml    | 72 +++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mmc/litex,mmc.yaml

diff --git a/Documentation/devicetree/bindings/mmc/litex,mmc.yaml b/Documentation/devicetree/bindings/mmc/litex,mmc.yaml
new file mode 100644
index 000000000000..f57cf42b8db7
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/litex,mmc.yaml
@@ -0,0 +1,72 @@
+# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/litex,mmc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: LiteX LiteSDCard device
+
+maintainers:
+  - Gabriel Somlo <gsomlo@...il.com>
+
+description: |
+  LiteSDCard is a small footprint, configurable SDCard core for FPGA based
+  system on chips.
+
+  The hardware source is Open Source and can be found on at
+  https://github.com/enjoy-digital/litesdcard/.
+
+allOf:
+  - $ref: mmc-controller.yaml#
+
+properties:
+  compatible:
+    const: litex,mmc
+
+  reg:
+    items:
+      - description: PHY registers
+      - description: CORE registers
+      - description: DMA Reader buffer
+      - description: DMA Writer buffer
+      - description: IRQ registers
+    minItems: 4
+
+  reg-names:
+    items:
+      - const: phy
+      - const: core
+      - const: reader
+      - const: writer
+      - const: irq
+    minItems: 4
+
+  clocks:
+    maxItems: 1
+    description:
+      Handle to reference clock.
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    mmc: mmc@...05000 {
+        compatible = "litex,mmc";
+        reg = <0x12005000 0x100>,
+              <0x12003800 0x100>,
+              <0x12003000 0x100>,
+              <0x12004800 0x100>,
+              <0x12004000 0x100>;
+        reg-names = "phy", "core", "reader", "writer", "irq";
+        clocks = <&reference_clk>;
+        interrupts = <4>;
+    };
-- 
2.31.1