From: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
To: <linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-clk@vger.kernel.org>, <alsa-devel@alsa-project.org>,
<nicolas.ferre@microchip.com>, <boris.brezillon@bootlin.com>,
<alexandre.belloni@bootlin.com>, <robh+dt@kernel.org>,
<broonie@kernel.org>, <sboyd@kernel.org>
Cc: <Cristian.Birsan@microchip.com>
Subject: [PATCH v5 1/5] dt-bindings: clk: at91: add an I2S mux clock
Date: Mon, 18 Jun 2018 17:12:35 +0300 [thread overview]
Message-ID: <20180618141239.10892-2-codrin.ciubotariu@microchip.com> (raw)
In-Reply-To: <20180618141239.10892-1-codrin.ciubotariu@microchip.com>
The I2S mux clock can be used to select the I2S input clock. The
available parents are the peripheral and the generated clocks.
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
---
Changes in v5:
- specified clock's parent;
- added a newline before adding the clock's compatible string;
.../devicetree/bindings/clock/at91-clock.txt | 35 +++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/Documentation/devicetree/bindings/clock/at91-clock.txt b/Documentation/devicetree/bindings/clock/at91-clock.txt
index 51c259a92d02..d0adbf5ae144 100644
--- a/Documentation/devicetree/bindings/clock/at91-clock.txt
+++ b/Documentation/devicetree/bindings/clock/at91-clock.txt
@@ -91,6 +91,9 @@ Required properties:
at91 audio pll output on AUDIOPLLCLK that feeds the PMC
and can be used by peripheral clock or generic clock
+ "atmel,sama5d2-clk-i2s-mux" (under pmc node):
+ at91 I2S clock source selection
+
Required properties for SCKC node:
- reg : defines the IO memory reserved for the SCKC.
- #size-cells : shall be 0 (reg is used to encode clk id).
@@ -507,3 +510,35 @@ For example:
atmel,clk-output-range = <0 83000000>;
};
};
+
+Required properties for I2S mux clocks:
+- #size-cells : shall be 0 (reg is used to encode I2S bus id).
+- #address-cells : shall be 1 (reg is used to encode I2S bus id).
+- name: device tree node describing a specific mux clock.
+ * #clock-cells : from common clock binding; shall be set to 0.
+ * clocks : shall be the mux clock parent phandles; shall be 2 phandles:
+ peripheral and generated clock; the first phandle shall belong to the
+ peripheral clock and the second one shall belong to the generated
+ clock; "clock-indices" property can be user to specify
+ the correct order.
+ * reg: I2S bus id of the corresponding mux clock.
+ e.g. reg = <0>; for i2s0, reg = <1>; for i2s1
+
+For example:
+ i2s_clkmux {
+ compatible = "atmel,sama5d2-clk-i2s-mux";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ i2s0muxck: i2s0_muxclk {
+ clocks = <&i2s0_clk>, <&i2s0_gclk>;
+ #clock-cells = <0>;
+ reg = <0>;
+ };
+
+ i2s1muxck: i2s1_muxclk {
+ clocks = <&i2s1_clk>, <&i2s1_gclk>;
+ #clock-cells = <0>;
+ reg = <1>;
+ };
+ };
--
2.17.1
next prev parent reply other threads:[~2018-06-18 14:13 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-18 14:12 [PATCH v5 0/5] ASoC: add driver for Atmel I2S controller Codrin Ciubotariu
2018-06-18 14:12 ` Codrin Ciubotariu [this message]
2018-06-20 15:47 ` [PATCH v5 1/5] dt-bindings: clk: at91: add an I2S mux clock Rob Herring
2018-06-20 18:44 ` Alexandre Belloni
2018-07-06 18:13 ` Stephen Boyd
2018-06-18 14:12 ` [PATCH v5 2/5] clk: at91: add I2S clock mux driver Codrin Ciubotariu
2018-07-06 18:12 ` Stephen Boyd
2018-07-09 15:55 ` Codrin Ciubotariu
2018-06-18 14:12 ` [PATCH v5 3/5] ARM: dts: at91: sama5d2: add I2S clock muxing nodes Codrin Ciubotariu
2018-06-18 14:12 ` [PATCH v5 4/5] ARM: dts: at91: sama5d2: add nodes for I2S controllers Codrin Ciubotariu
2018-07-06 19:39 ` Alexandre Belloni
2018-07-09 13:29 ` Codrin Ciubotariu
2018-07-16 14:15 ` Alexandre Belloni
2018-06-18 14:12 ` [PATCH v5 5/5] ARM: dts: at91: sama5d2 Xplained: add pin muxing for I2S Codrin Ciubotariu
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