[PATCH V3 03/12] ARM: shmobile: r7s72100: add essential clock nodes to dtsi

Wolfram Sang
2014-03-07T16:00:39Z

From: Wolfram Sang <wsa@sang-engineering.com>

Only essential clocks are added for now. Other clocks will be added when
needed.

Signed-off-by: Wolfram Sang <wsa@sang-engineering.com>
---

Change since V2:

* Use macro to reference the PLL

Changes since V1:
* add usb_x1 clock
* reference usb_x1 to cpg
* improved wording
* #clock-cells consistently first property

arch/arm/boot/dts/r7s72100.dtsi | 86 +++++++++++++++++++++++++++++-
include/dt-bindings/clock/r7s72100-clock.h | 27 ++++++++++
2 files changed, 112 insertions(+), 1 deletion(-)
create mode 100644 include/dt-bindings/clock/r7s72100-clock.h

diff --git a/arch/arm/boot/dts/r7s72100.dtsi b/arch/arm/boot/dts/r7s72100.dtsi
index ee700717a34b..6af5c28c670e 100644
--- a/arch/arm/boot/dts/r7s72100.dtsi
+++ b/arch/arm/boot/dts/r7s72100.dtsi
@@ -1,13 +1,15 @@
/*
* Device Tree Source for the r7s72100 SoC
*
- * Copyright (C) 2013 Renesas Solutions Corp.
+ * Copyright (C) 2013-14 Renesas Solutions Corp.
+ * Copyright (C) 2014 Wolfram Sang, Sang Engineering <wsa@sang-engineering.com>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/

+#include <dt-bindings/clock/r7s72100-clock.h>
#include <dt-bindings/interrupt-controller/irq.h>

/ {
@@ -28,6 +30,88 @@
spi4 = &spi4;
};

+ clocks {
+ ranges;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ /* External clocks */
+ extal_clk: extal_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ /* If clk present, value must be set by board */
+ clock-frequency = <0>;
+ clock-output-names = "extal";
+ };
+
+ usb_x1_clk: usb_x1_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ /* If clk present, value must be set by board */
+ clock-frequency = <0>;
+ clock-output-names = "usb_x1";
+ };
+
+ /* Special CPG clocks */
+ cpg_clocks: cpg_clocks at fcfe0000 {
+ #clock-cells = <1>;
+ compatible = "renesas,r7s72100-cpg-clocks",
+ "renesas,rz-cpg-clocks";
+ reg = <0xfcfe0000 0x18>;
+ clocks = <&extal_clk>, <&usb_x1_clk>;
+ clock-output-names = "pll", "i", "g";
+ };
+
+ /* Fixed factor clocks */
+ b_clk: b_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-factor-clock";
+ clocks = <&cpg_clocks R7S72100_CLK_PLL>;
+ clock-mult = <1>;
+ clock-div = <3>;
+ clock-output-names = "b";
+ };
+ p1_clk: p1_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-factor-clock";
+ clocks = <&cpg_clocks R7S72100_CLK_PLL>;
+ clock-mult = <1>;
+ clock-div = <6>;
+ clock-output-names = "p1";
+ };
+ p0_clk: p0_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-factor-clock";
+ clocks = <&cpg_clocks R7S72100_CLK_PLL>;
+ clock-mult = <1>;
+ clock-div = <12>;
+ clock-output-names = "p0";
+ };
+
+ /* MSTP clocks */
+ mstp3_clks: mstp3_clks at fcfe0420 {
+ #clock-cells = <1>;
+ compatible = "renesas,r7s72100-mstp-clocks", "renesas,cpg-mstp-clocks";
+ reg = <0xfcfe0420 4>;
+ clocks = <&p0_clk>;
+ renesas,clock-indices = <R7S72100_CLK_MTU2>;
+ clock-output-names = "mtu2";
+ };
+
+ mstp4_clks: mstp4_clks at fcfe0424 {
+ #clock-cells = <1>;
+ compatible = "renesas,r7s72100-mstp-clocks", "renesas,cpg-mstp-clocks";
+ reg = <0xfcfe0424 4>;
+ clocks = <&p1_clk>, <&p1_clk>, <&p1_clk>, <&p1_clk>,
+ <&p1_clk>, <&p1_clk>, <&p1_clk>, <&p1_clk>;
+ renesas,clock-indices = <
+ R7S72100_CLK_SCIF0 R7S72100_CLK_SCIF1 R7S72100_CLK_SCIF2 R7S72100_CLK_SCIF3
+ R7S72100_CLK_SCIF4 R7S72100_CLK_SCIF5 R7S72100_CLK_SCIF6 R7S72100_CLK_SCIF7
+ >;
+ clock-output-names = "scif0", "scif1", "scif2", "scif3", "scif4", "scif5", "scif6", "scif7";
+ };
+ };
+
cpus {
#address-cells = <1>;
#size-cells = <0>;
diff --git a/include/dt-bindings/clock/r7s72100-clock.h b/include/dt-bindings/clock/r7s72100-clock.h
new file mode 100644
index 000000000000..d0e2d91025c2
--- /dev/null
+++ b/include/dt-bindings/clock/r7s72100-clock.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2014 Wolfram Sang, Sang Engineering <wsa@sang-engineering.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ */
+
+#ifndef __DT_BINDINGS_CLOCK_R7S72100_H__
+#define __DT_BINDINGS_CLOCK_R7S72100_H__
+
+#define R7S72100_CLK_PLL 0
+
+/* MSTP3 */
+#define R7S72100_CLK_MTU2 3
+
+/* MSTP4 */
+#define R7S72100_CLK_SCIF0 7
+#define R7S72100_CLK_SCIF1 6
+#define R7S72100_CLK_SCIF2 5
+#define R7S72100_CLK_SCIF3 4
+#define R7S72100_CLK_SCIF4 3
+#define R7S72100_CLK_SCIF5 2
+#define R7S72100_CLK_SCIF6 1
+#define R7S72100_CLK_SCIF7 0
+
+#endif /* __DT_BINDINGS_CLOCK_R7S72100_H__ */
--
1.9.0