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Date: Tue, 4 Sep 2018 12:38:24 -0300
From: Edgar Bernardi Righi <edgar.righi@...tec.org.br>
To: linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>, linux@...linux.org.uk,
Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
Guilherme G. Simões
<guilherme.simoes@...tec.org.br>,
Jon maddog Hall <jon.maddog.hall@...il.com>,
mkzuffo@....usp.br,
Andreas Färber <afaerber@...e.de>,
sboyd@...nel.org, mark.rutland@....com, linux@...ietech.com,
support@...ietech.com, catalin.marinas@....com,
Michael Turquette <mturquette@...libre.com>,
will.deacon@....com, thomas liau <thomas.liau@...ions-semi.com>,
darren@...ietech.com, robh+dt@...nel.org,
jeff.chen@...ions-semi.com, pn@...x.de, mp-cs@...ions-semi.com,
Laisa Costa - LSI-TEC <laisa.costa@...tec.org.br>
Subject: [PATCH v2 02/03] arm: dts: actions: Enable clock controller for
Actions Semi S500 SoC
Enable clock controller for Actions Semi S500 SoC on owl-s500 device tree.
Set UART clock reference from CMU for Actions Semi S500 SoC.
Tested on a Lemaker Guitar board.
Signed-off-by: Edgar Bernardi Righi <edgar.righi@...tec.org.br>
diff --git a/arch/arm/boot/dts/owl-s500-cubieboard6.dts
b/arch/arm/boot/dts/owl-s500-cubieboard6.dts
index 7c96c59b610d..4a91a29d2f29 100644
--- a/arch/arm/boot/dts/owl-s500-cubieboard6.dts
+++ b/arch/arm/boot/dts/owl-s500-cubieboard6.dts
@@ -3,6 +3,7 @@
* Cubietech CubieBoard6
*
* Copyright (c) 2017 Andreas Färber
+ * Copyright (c) 2018 Edgar Bernardi Righi
*/
/dts-v1/;
@@ -25,12 +26,6 @@
device_type = "memory";
reg = <0x0 0x80000000>;
};
-
- uart3_clk: uart3-clk {
- compatible = "fixed-clock";
- clock-frequency = <921600>;
- #clock-cells = <0>;
- };
};
&timer {
@@ -39,5 +34,4 @@
&uart3 {
status = "okay";
- clocks = <&uart3_clk>;
};
diff --git a/arch/arm/boot/dts/owl-s500-guitar-bb-rev-b.dts
b/arch/arm/boot/dts/owl-s500-guitar-bb-rev-b.dts
index e610d49395d2..1a980ca6a426 100644
--- a/arch/arm/boot/dts/owl-s500-guitar-bb-rev-b.dts
+++ b/arch/arm/boot/dts/owl-s500-guitar-bb-rev-b.dts
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2016-2017 Andreas Färber
+ * Copyright (c) 2018-2018 Edgar Bernardi Righi
*/
/dts-v1/;
@@ -18,15 +19,8 @@
chosen {
stdout-path = "serial3:115200n8";
};
-
- uart3_clk: uart3-clk {
- compatible = "fixed-clock";
- clock-frequency = <921600>;
- #clock-cells = <0>;
- };
};
&uart3 {
status = "okay";
- clocks = <&uart3_clk>;
};
diff --git a/arch/arm/boot/dts/owl-s500-sparky.dts
b/arch/arm/boot/dts/owl-s500-sparky.dts
index c665ce8b88b4..65555afee584 100644
--- a/arch/arm/boot/dts/owl-s500-sparky.dts
+++ b/arch/arm/boot/dts/owl-s500-sparky.dts
@@ -3,6 +3,7 @@
* Allo.com Sparky
*
* Copyright (c) 2017 Andreas Färber
+ * Copyright (c) 2018-2018 Edgar Bernardi Righi
*/
/dts-v1/;
@@ -25,12 +26,6 @@
device_type = "memory";
reg = <0x0 0x40000000>; /* 1 or 2 GiB */
};
-
- uart3_clk: uart3-clk {
- compatible = "fixed-clock";
- clock-frequency = <921600>;
- #clock-cells = <0>;
- };
};
&timer {
@@ -39,5 +34,4 @@
&uart3 {
status = "okay";
- clocks = <&uart3_clk>;
};
diff --git a/arch/arm/boot/dts/owl-s500.dtsi b/arch/arm/boot/dts/owl-s500.dtsi
index 5ceb6cc4451d..bf506038e22b 100644
--- a/arch/arm/boot/dts/owl-s500.dtsi
+++ b/arch/arm/boot/dts/owl-s500.dtsi
@@ -3,10 +3,12 @@
* Actions Semi S500 SoC
*
* Copyright (c) 2016-2017 Andreas Färber
+ * Copyright (c) 2018-2018 Edgar Bernardi Righi
*/
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/power/owl-s500-powergate.h>
+#include <dt-bindings/clock/actions,s500-cmu.h>
/ {
compatible = "actions,s500";
@@ -69,6 +71,12 @@
clock-frequency = <24000000>;
#clock-cells = <0>;
};
+
+ losc: losc {
+ compatible = "fixed-clock";
+ clock-frequency = <32678>;
+ #clock-cells = <0>;
+ };
soc {
compatible = "simple-bus";
@@ -124,6 +132,7 @@
compatible = "actions,s500-uart", "actions,owl-uart";
reg = <0xb0120000 0x2000>;
interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cmu CLK_UART0>;
status = "disabled";
};
@@ -131,6 +140,7 @@
compatible = "actions,s500-uart", "actions,owl-uart";
reg = <0xb0122000 0x2000>;
interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cmu CLK_UART1>;
status = "disabled";
};
@@ -138,6 +148,7 @@
compatible = "actions,s500-uart", "actions,owl-uart";
reg = <0xb0124000 0x2000>;
interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cmu CLK_UART2>;
status = "disabled";
};
@@ -145,6 +156,7 @@
compatible = "actions,s500-uart", "actions,owl-uart";
reg = <0xb0126000 0x2000>;
interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cmu CLK_UART3>;
status = "disabled";
};
@@ -152,6 +164,7 @@
compatible = "actions,s500-uart", "actions,owl-uart";
reg = <0xb0128000 0x2000>;
interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cmu CLK_UART4>;
status = "disabled";
};
@@ -159,6 +172,7 @@
compatible = "actions,s500-uart", "actions,owl-uart";
reg = <0xb012a000 0x2000>;
interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cmu CLK_UART5>;
status = "disabled";
};
@@ -166,8 +180,18 @@
compatible = "actions,s500-uart", "actions,owl-uart";
reg = <0xb012c000 0x2000>;
interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cmu CLK_UART6>;
status = "disabled";
};
+
+ cmu: clock-controller@...60000 {
+ compatible = "actions,s500-cmu";
+ reg = <0xb0160000 0x8000>;
+ clocks = <&hosc>, <&losc>;
+ clock-indices = <CLK_UART0>, <CLK_UART1>, <CLK_UART2>,
+ <CLK_UART3>, <CLK_UART4>, <CLK_UART5>, <CLK_UART6>;
+ #clock-cells = <1>;
+ };
timer: timer@...68000 {
compatible = "actions,s500-timer";
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