aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorGerhard Sittig <gsi@denx.de>2013-11-30 17:51:23 -0500
committerAnatolij Gustschin <agust@denx.de>2014-01-12 12:53:03 -0500
commitf87ccd2edcdbe86ffb7cf7286e1c7aa84d5e5af9 (patch)
treeff66cf2b1093294ff6a375e44d7da1ada5f2a465
parent4cc5e1ca547738578182f7ae9ec5ff8d2a9c86c8 (diff)
dts: mpc512x: add clock related device tree specs
this addresses the clock driver aka provider's side of clocks - introduce a 'clocks' subtree with an 'osc' node for the crystal or oscillator SoC input (fixed frequency) - the 'clock@f00' clock-control-module node references the 'osc' for its input, and is another provider for all the clocks which the CCM component manages - prepare for future references to clocks from peripheral nodes by means of the <&clks ID> syntax and symbolic ID names which a header file provides - provide default values with 33MHz oscillator frequency in the common include (the 66MHz IPS bus already was there), and add override values for the ifm AC14xx board which deviates from the reference design (25MHz xtal, 80MHz IPS bus) Cc: Rob Herring <rob.herring@calxeda.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: linux-arm-kernel@lists.infradead.org Cc: devicetree@vger.kernel.org Reviewed-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Gerhard Sittig <gsi@denx.de> Signed-off-by: Anatolij Gustschin <agust@denx.de>
-rw-r--r--arch/powerpc/boot/dts/ac14xx.dts7
-rw-r--r--arch/powerpc/boot/dts/mpc5121.dtsi18
2 files changed, 24 insertions, 1 deletions
diff --git a/arch/powerpc/boot/dts/ac14xx.dts b/arch/powerpc/boot/dts/ac14xx.dts
index a543c4088cba..a1b883730b31 100644
--- a/arch/powerpc/boot/dts/ac14xx.dts
+++ b/arch/powerpc/boot/dts/ac14xx.dts
@@ -139,7 +139,14 @@
139 }; 139 };
140 }; 140 };
141 141
142 clocks {
143 osc {
144 clock-frequency = <25000000>;
145 };
146 };
147
142 soc@80000000 { 148 soc@80000000 {
149 bus-frequency = <80000000>; /* 80 MHz ips bus */
143 150
144 clock@f00 { 151 clock@f00 {
145 compatible = "fsl,mpc5121rev2-clock", "fsl,mpc5121-clock"; 152 compatible = "fsl,mpc5121rev2-clock", "fsl,mpc5121-clock";
diff --git a/arch/powerpc/boot/dts/mpc5121.dtsi b/arch/powerpc/boot/dts/mpc5121.dtsi
index 2d7cb04ac962..1d533e083e3c 100644
--- a/arch/powerpc/boot/dts/mpc5121.dtsi
+++ b/arch/powerpc/boot/dts/mpc5121.dtsi
@@ -9,6 +9,8 @@
9 * option) any later version. 9 * option) any later version.
10 */ 10 */
11 11
12#include <dt-bindings/clock/mpc512x-clock.h>
13
12/dts-v1/; 14/dts-v1/;
13 15
14/ { 16/ {
@@ -73,6 +75,17 @@
73 ranges = <0x0 0x0 0xfc000000 0x04000000>; 75 ranges = <0x0 0x0 0xfc000000 0x04000000>;
74 }; 76 };
75 77
78 clocks {
79 #address-cells = <1>;
80 #size-cells = <0>;
81
82 osc: osc {
83 compatible = "fixed-clock";
84 #clock-cells = <0>;
85 clock-frequency = <33000000>;
86 };
87 };
88
76 soc@80000000 { 89 soc@80000000 {
77 compatible = "fsl,mpc5121-immr"; 90 compatible = "fsl,mpc5121-immr";
78 #address-cells = <1>; 91 #address-cells = <1>;
@@ -117,9 +130,12 @@
117 }; 130 };
118 131
119 /* Clock control */ 132 /* Clock control */
120 clock@f00 { 133 clks: clock@f00 {
121 compatible = "fsl,mpc5121-clock"; 134 compatible = "fsl,mpc5121-clock";
122 reg = <0xf00 0x100>; 135 reg = <0xf00 0x100>;
136 #clock-cells = <1>;
137 clocks = <&osc>;
138 clock-names = "osc";
123 }; 139 };
124 140
125 /* Power Management Controller */ 141 /* Power Management Controller */