linux-kernel - [PATCH] ARM64: dts: meson-axg: add the audio clock controller

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Date:   Thu,  5 Jul 2018 13:37:13 +0200
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Kevin Hilman <khilman@...libre.com>,
        Carlo Caione <carlo@...one.org>
Cc:     Jerome Brunet <jbrunet@...libre.com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ARM64: dts: meson-axg: add the audio clock controller

Add the audio clock controller which is part of the audio bus
This controller takes 8 input plls, and the usual clock gate, from the
main clock controller. It provides for the all the devices of the audio
subsystem, such as tdms, spdif, pdm, etc.

Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
---

Kevin,

Please note that this change depends on the axg audio clock bindings [0].
It will be part of our PR to clock in this cycle.

As usual, I've prepared a topic branch with the DT changes for you.
Please, let me know when you need a tag on it.

Cheers
Jerome

[0]: https://lkml.kernel.org/r/20180522163457.13834-6-jbrunet@baylibre.com

arch/arm64/boot/dts/amlogic/meson-axg.dtsi | 36 ++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
index aa1a42407466..56d334be9f85 100644
--- a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
@@ -6,6 +6,7 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/clock/axg-audio-clkc.h>
 #include <dt-bindings/clock/axg-clkc.h>
 #include <dt-bindings/clock/axg-aoclkc.h>
 #include <dt-bindings/gpio/meson-axg-gpio.h>
@@ -155,6 +156,41 @@
 			};
 		};
 
+		audio: bus@...42000 {
+			compatible = "simple-bus";
+			reg = <0x0 0xff642000 0x0 0x2000>;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges = <0x0 0x0 0x0 0xff642000 0x0 0x2000>;
+
+			clkc_audio: clock-controller@0 {
+				compatible = "amlogic,axg-audio-clkc";
+				reg = <0x0 0x0 0x0 0xb4>;
+				#clock-cells = <1>;
+
+				clocks = <&clkc CLKID_AUDIO>,
+					 <&clkc CLKID_MPLL0>,
+					 <&clkc CLKID_MPLL1>,
+					 <&clkc CLKID_MPLL2>,
+					 <&clkc CLKID_MPLL3>,
+					 <&clkc CLKID_HIFI_PLL>,
+					 <&clkc CLKID_FCLK_DIV3>,
+					 <&clkc CLKID_FCLK_DIV4>,
+					 <&clkc CLKID_GP0_PLL>;
+				clock-names = "pclk",
+					      "mst_in0",
+					      "mst_in1",
+					      "mst_in2",
+					      "mst_in3",
+					      "mst_in4",
+					      "mst_in5",
+					      "mst_in6",
+					      "mst_in7";
+
+				resets = <&reset RESET_AUDIO>;
+			};
+		};
+
 		cbus: bus@...00000 {
 			compatible = "simple-bus";
 			reg = <0x0 0xffd00000 0x0 0x25000>;
-- 
2.14.4