linux-kernel - [PATCH v3 1/2] dt-binding: mmc: Add mmc yaml file for Sunplus SP7021

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Message-Id: <f8b89f9981e17c023ce530afedb1f2b599edec0f.1644398657.git.tonyhuang.sunplus@gmail.com>
Date:   Wed,  9 Feb 2022 18:41:06 +0800
From:   Tony Huang <tonyhuang.sunplus@...il.com>
To:     ulf.hansson@...aro.org, robh+dt@...nel.org, lhjeff911@...il.com,
        linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
        p.zabel@...gutronix.de, linux-kernel@...r.kernel.org,
        tony.huang@...plus.com, wells.lu@...plus.com, lh.kuo@...plus.com
Cc:     Tony Huang <tonyhuang.sunplus@...il.com>
Subject: [PATCH v3 1/2] dt-binding: mmc: Add mmc yaml file for Sunplus SP7021

Add mmc yaml file for Sunplus SP7021

Signed-off-by: Tony Huang <tonyhuang.sunplus@...il.com>
---
Changes in v3:
 - combine sdcard and eMMC into one driver.

 .../devicetree/bindings/mmc/sunplus-mmc.yaml       | 76 ++++++++++++++++++++++
 MAINTAINERS                                        |  6 ++
 2 files changed, 82 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mmc/sunplus-mmc.yaml

diff --git a/Documentation/devicetree/bindings/mmc/sunplus-mmc.yaml b/Documentation/devicetree/bindings/mmc/sunplus-mmc.yaml
new file mode 100644
index 0000000..8f44d13
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/sunplus-mmc.yaml
@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) Sunplus Ltd. Co. 2021
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/sunplus-mmc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: sunplus MMC controller
+
+allOf:
+  - $ref: "mmc-controller.yaml"
+
+maintainers:
+  - Tony Huang <tonyhuang.sunplus@...il.com>
+  - Li-hao Kuo <lhjeff911@...il.com>
+
+properties:
+  compatible:
+    enum:
+      - sunplus,sp7021-emmc
+      - sunplus,sp7021-sdhci
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+
+  resets:
+    maxItems: 1
+
+  max-frequency: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - resets
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    mmc0: mmc@...03b00 {
+        compatible = "sunplus,sp7021-emmc";
+        reg = <0x9c003b00 0x180>;
+        interrupts = <20 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clkc 0x4e>;
+        resets = <&rstc 0x3e>;
+        bus-width = <8>;
+        max-frequency = <52000000>;
+        non-removable;
+        disable-wp;
+        cap-mmc-highspeed;
+        mmc-ddr-3_3v;
+        no-sdio;
+        no-sd;
+    };
+
+    mmc1: mmc@...03e80 {
+       compatible = "sunplus,sp7021-sdhci";
+       reg = <0x9c003e80 0x280>;
+       interrupts = <21 IRQ_TYPE_LEVEL_HIGH>;
+       clocks = <&clkc 0x4f>;
+       resets = <&rstc 0x3f>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&mmc1_mux &mmc1_mux_cd>;
+       max-frequency = <52000000>;
+    };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index fb18ce7..cb46a55 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18242,6 +18242,12 @@ L:	netdev@...r.kernel.org
 S:	Maintained
 F:	drivers/net/ethernet/dlink/sundance.c
 
+SUNPLUS MMC DRIVER
+M:	Tony Huang <tonyhuang.sunplus@...il.com>
+M:	Li-hao Kuo <lhjeff911@...il.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/mmc/sunplu-mmc.yaml
+
 SUPERH
 M:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
 M:	Rich Felker <dalias@...c.org>
-- 
2.7.4