From: Jianxin Pan <jianxin.pan@amlogic.com>
To: Jerome Brunet <jbrunet@baylibre.com>,
Neil Armstrong <narmstrong@baylibre.com>
Cc: Yixun Lan <yixun.lan@amlogic.com>,
Jianxin Pan <jianxin.pan@amlogic.com>,
Kevin Hilman <khilman@baylibre.com>,
Carlo Caione <carlo@caione.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh@kernel.org>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Boris Brezillon <boris.brezillon@bootlin.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Liang Yang <liang.yang@amlogic.com>,
Jian Hu <jian.hu@amlogic.com>,
Qiufang Dai <qiufang.dai@amlogic.com>,
Hanjie Lin <hanjie.lin@amlogic.com>,
Victor Wan <victor.wan@amlogic.com>, <linux-clk@vger.kernel.org>,
<linux-amlogic@lists.infradead.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH v9 3/4] clk: meson: add DT documentation for emmc clock controller
Date: Tue, 8 Jan 2019 21:50:43 +0800 [thread overview]
Message-ID: <1546955444-7549-4-git-send-email-jianxin.pan@amlogic.com> (raw)
In-Reply-To: <1546955444-7549-1-git-send-email-jianxin.pan@amlogic.com>
From: Yixun Lan <yixun.lan@amlogic.com>
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.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Yixun Lan <yixun.lan@amlogic.com>
Signed-off-by: Jianxin Pan <jianxin.pan@amlogic.com>
---
.../devicetree/bindings/clock/amlogic,mmc-clkc.txt | 39 ++++++++++++++++++++++
include/dt-bindings/clock/amlogic,mmc-clkc.h | 17 ++++++++++
2 files changed, 56 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.txt
create mode 100644 include/dt-bindings/clock/amlogic,mmc-clkc.h
diff --git a/Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.txt b/Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.txt
new file mode 100644
index 0000000..0f518e6
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.txt
@@ -0,0 +1,39 @@
+* Amlogic MMC Sub Clock Controller Driver
+
+The Amlogic MMC clock controller generates and supplies clock to support
+MMC and NAND controller
+
+Required Properties:
+
+- compatible: should be:
+ "amlogic,gx-mmc-clkc"
+ "amlogic,axg-mmc-clkc"
+
+- #clock-cells: should be 1.
+- clocks: phandles to clocks corresponding to the clock-names property
+- clock-names: list of parent clock names
+ - "clkin0", "clkin1"
+
+- reg: address of emmc sub clock register
+
+Example: Clock controller node:
+
+sd_mmc_c_clkc: clock-controller@7000 {
+ 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@5000 {
+ 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>;
+};
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 0000000..34a3c56
--- /dev/null
+++ b/include/dt-bindings/clock/amlogic,mmc-clkc.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+/*
+ * Meson MMC sub clock tree IDs
+ *
+ * Copyright (c) 2018 Amlogic, Inc. All rights reserved.
+ * Author: Yixun Lan <yixun.lan@amlogic.com>
+ */
+
+#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
--
1.9.1
next prev parent reply other threads:[~2019-01-08 13:51 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-08 13:50 [PATCH RESEND v9 0/4] clk: meson: add a sub EMMC clock controller support Jianxin Pan
2019-01-08 13:50 ` [PATCH v9 1/4] clk: meson: add one based divider support for sclk divider Jianxin Pan
2019-01-22 9:25 ` Jerome Brunet
2019-01-24 9:10 ` Jianxin Pan
2019-01-08 13:50 ` [PATCH v9 2/4] clk: meson: add emmc sub clock phase delay driver Jianxin Pan
2019-01-08 13:50 ` Jianxin Pan [this message]
2019-01-22 9:27 ` [PATCH v9 3/4] clk: meson: add DT documentation for emmc clock controller Jerome Brunet
2019-01-08 13:50 ` [PATCH v9 4/4] clk: meson: add sub MMC clock controller driver Jianxin Pan
2019-01-22 9:25 ` Jerome Brunet
2022-01-13 11:57 [PATCH v9 0/4] clk: meson: add a sub EMMC clock controller support Liang Yang
2022-01-13 11:57 ` [PATCH v9 3/4] clk: meson: add DT documentation for emmc clock controller Liang Yang
2022-01-13 21:29 ` Stephen Boyd
2022-01-14 3:06 ` Liang Yang
2022-01-14 22:59 ` Stephen Boyd
2022-01-17 2:43 ` Liang Yang
2022-01-15 0:09 ` Martin Blumenstingl
2022-01-17 7:03 ` Liang Yang
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