From: Lars Persson <lars.persson@axis.com>
To: devicetree@vger.kernel.org, linux-clk@vger.kernel.org
Cc: mturquette@baylibre.com, sboyd@codeaurora.org,
robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com,
ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
linux-kernel@vger.kernel.org, Lars Persson <larper@axis.com>
Subject: [PATCH v4 1/2] clk: add device tree binding for Artpec-6 clock controller
Date: Thu, 25 Feb 2016 15:58:14 +0100 [thread overview]
Message-ID: <75711597edc5b6c1390abf5d5f185e9007cf2a81.1456411894.git.larper@axis.com> (raw)
In-Reply-To: <cover.1456411894.git.larper@axis.com>
In-Reply-To: <cover.1456411894.git.larper@axis.com>
Add device tree documentation for the main clock controller in the
Artpec-6 SoC.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lars Persson <larper@axis.com>
---
.../devicetree/bindings/clock/artpec6.txt | 41 ++++++++++++++++++++++
include/dt-bindings/clock/axis,artpec6-clkctrl.h | 38 ++++++++++++++++++++
2 files changed, 79 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/artpec6.txt
create mode 100644 include/dt-bindings/clock/axis,artpec6-clkctrl.h
diff --git a/Documentation/devicetree/bindings/clock/artpec6.txt b/Documentation/devicetree/bindings/clock/artpec6.txt
new file mode 100644
index 0000000..9ba9bd0
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/artpec6.txt
@@ -0,0 +1,41 @@
+* Clock bindings for Axis ARTPEC-6 chip
+
+The bindings are based on the clock provider binding in
+Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+External clocks:
+----------------
+
+There are two external inputs to the main clock controller which should be
+provided using the common clock bindings.
+- "sys_refclk": External 50 Mhz oscillator (required)
+- "i2s_refclk": Alternate audio reference clock (optional).
+
+Main clock controller
+---------------------
+
+Required properties:
+- #clock-cells: Should be <1>
+ See dt-bindings/clock/axis,artpec6-clkctrl.h for the list of valid identifiers.
+- compatible: Should be "axis,artpec6-clkctrl"
+- reg: Must contain the base address and length of the system controller
+- clocks: Must contain a phandle entry for each clock in clock-names
+- clock-names: Must include the external oscillator ("sys_refclk"). Optional
+ ones are the audio reference clock ("i2s_refclk") and the audio fractional
+ dividers ("frac_clk0" and "frac_clk1").
+
+Examples:
+
+ext_clk: ext_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <50000000>;
+};
+
+clkctrl: clkctrl {
+ #clock-cells = <1>;
+ compatible = "axis,artpec6-clkctrl";
+ reg = <0xf8000000 0x48>;
+ clocks = <&ext_clk>;
+ clock-names = "sys_refclk";
+};
diff --git a/include/dt-bindings/clock/axis,artpec6-clkctrl.h b/include/dt-bindings/clock/axis,artpec6-clkctrl.h
new file mode 100644
index 0000000..f9f04dc
--- /dev/null
+++ b/include/dt-bindings/clock/axis,artpec6-clkctrl.h
@@ -0,0 +1,38 @@
+/*
+ * ARTPEC-6 clock controller indexes
+ *
+ * Copyright 2016 Axis Comunications AB.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef DT_BINDINGS_CLK_ARTPEC6_CLKCTRL_H
+#define DT_BINDINGS_CLK_ARTPEC6_CLKCTRL_H
+
+#define ARTPEC6_CLK_CPU 0
+#define ARTPEC6_CLK_CPU_PERIPH 1
+#define ARTPEC6_CLK_NAND_CLKA 2
+#define ARTPEC6_CLK_NAND_CLKB 3
+#define ARTPEC6_CLK_ETH_ACLK 4
+#define ARTPEC6_CLK_DMA_ACLK 5
+#define ARTPEC6_CLK_PTP_REF 6
+#define ARTPEC6_CLK_SD_PCLK 7
+#define ARTPEC6_CLK_SD_IMCLK 8
+#define ARTPEC6_CLK_I2S_HST 9
+#define ARTPEC6_CLK_I2S0_CLK 10
+#define ARTPEC6_CLK_I2S1_CLK 11
+#define ARTPEC6_CLK_UART_PCLK 12
+#define ARTPEC6_CLK_UART_REFCLK 13
+#define ARTPEC6_CLK_I2C 14
+#define ARTPEC6_CLK_SPI_PCLK 15
+#define ARTPEC6_CLK_SPI_SSPCLK 16
+#define ARTPEC6_CLK_SYS_TIMER 17
+#define ARTPEC6_CLK_FRACDIV_IN 18
+#define ARTPEC6_CLK_DBG_PCLK 19
+
+/* This must be the highest clock index plus one. */
+#define ARTPEC6_CLK_NUMCLOCKS 20
+
+#endif
--
2.1.4
next prev parent reply other threads:[~2016-02-25 14:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-25 14:58 [PATCH v4 0/2] clk: Add Artpec-6 SoC support Lars Persson
2016-02-25 14:58 ` Lars Persson
2016-02-25 14:58 ` Lars Persson [this message]
2016-02-25 14:58 ` [PATCH v4 2/2] clk: add artpec-6 clock controller Lars Persson
2016-03-23 8:41 ` [PATCH v4 0/2] clk: Add Artpec-6 SoC support Lars Persson
2016-03-23 8:41 ` Lars Persson
2016-03-25 23:08 ` Stephen Boyd
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