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Message-ID: <20220113115745.45826-4-liang.yang@amlogic.com>
Date: Thu, 13 Jan 2022 19:57:44 +0800
From: Liang Yang <liang.yang@...ogic.com>
To: Neil Armstrong <narmstrong@...libre.com>,
Jerome Brunet <jbrunet@...libre.com>,
Kevin Hilman <khilman@...libre.com>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Rob Herring <robh+dt@...nel.org>, <linux-clk@...r.kernel.org>
CC: Liang Yang <liang.yang@...ogic.com>,
Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
Jianxin Pan <jianxin.pan@...ogic.com>,
Victor Wan <victor.wan@...ogic.com>,
XianWei Zhao <xianwei.zhao@...ogic.com>,
Kelvin Zhang <kelvin.zhang@...ogic.com>,
BiChao Zheng <bichao.zheng@...ogic.com>,
YongHui Yu <yonghui.yu@...ogic.com>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-amlogic@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v9 3/4] clk: meson: add DT documentation for emmc clock controller
Document the MMC sub clock controller driver, the potential consumer
of this driver is MMC or NAND. Also add four clock bindings IDs which
provided by this driver.
Signed-off-by: Liang Yang <liang.yang@...ogic.com>
---
.../bindings/clock/amlogic,mmc-clkc.yaml | 64 +++++++++++++++++++
include/dt-bindings/clock/amlogic,mmc-clkc.h | 14 ++++
2 files changed, 78 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.yaml
create mode 100644 include/dt-bindings/clock/amlogic,mmc-clkc.h
diff --git a/Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.yaml b/Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.yaml
new file mode 100644
index 000000000000..a274c3d5fc2e
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.yaml
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/amlogic,mmc-clkc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic MMC Sub Clock Controller Driver Device Tree Bindings
+
+maintainers:
+ - jianxin.pan@...ogic.com
+ - liang.yang@...ogic.com
+
+properties:
+ compatible:
+ enum:
+ - "amlogic,axg-mmc-clkc", "syscon"
+ - "amlogic,gx-mmc-clkc", "syscon"
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 2
+
+ clock-names:
+ items:
+ - const: "clkin0", "clkin1"
+
+ "#clock-cells":
+ const: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - "#clock-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ sd_mmc_c_clkc: clock-controller@...0 {
+ compatible = "amlogic,axg-mmc-clkc", "syscon";
+ reg = <0x0 0x7000 0x0 0x4>;
+ #clock-cells = <1>;
+
+ clock-names = "clkin0", "clkin1";
+ clocks = <&clkc CLKID_SD_MMC_C_CLK0>,
+ <&clkc CLKID_FCLK_DIV2>;
+ };
+
+ - |
+ sd_emmc_b_clkc: clock-controller@...0 {
+ compatible = "amlogic,axg-mmc-clkc", "syscon";
+ reg = <0x0 0x5000 0x0 0x4>;
+
+ #clock-cells = <1>;
+ clock-names = "clkin0", "clkin1";
+ clocks = <&clkc CLKID_SD_EMMC_B_CLK0>,
+ <&clkc CLKID_FCLK_DIV2>;
+ };
+
+...
\ No newline at end of file
diff --git a/include/dt-bindings/clock/amlogic,mmc-clkc.h b/include/dt-bindings/clock/amlogic,mmc-clkc.h
new file mode 100644
index 000000000000..71301517b183
--- /dev/null
+++ b/include/dt-bindings/clock/amlogic,mmc-clkc.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+/*
+ * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
+ */
+
+#ifndef __MMC_CLKC_H
+#define __MMC_CLKC_H
+
+#define CLKID_MMC_DIV 0
+#define CLKID_MMC_PHASE_CORE 1
+#define CLKID_MMC_PHASE_TX 2
+#define CLKID_MMC_PHASE_RX 3
+
+#endif
--
2.34.1
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