path: root/Documentation
diff options
authorRichard Zhao <richard.zhao@linaro.org>2011-12-15 16:36:43 +0800
committerEric Miao <eric.miao@linaro.org>2012-01-12 10:16:04 +0800
commit5bce11b8a82679c391c184d0eab95cf3256d9acd (patch)
treea44646b5072d235764ebb98ad0d5387f523840d4 /Documentation
parent590e0195c21fe4f615b088bd4d835479b34a9706 (diff)
cpufreq: add clk-reg cpufreq driver
The driver get cpu operation point table from device tree cpu0 node, and adjusts operating points using clk and regulator APIs. It support single core and multi-core ARM SoCs. But currently it assume all cores share the same frequency and voltage. Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
Diffstat (limited to 'Documentation')
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/cpufreq/clk-reg-cpufreq b/Documentation/devicetree/bindings/cpufreq/clk-reg-cpufreq
new file mode 100644
index 00000000000..bf07c1b87a0
--- /dev/null
+++ b/Documentation/devicetree/bindings/cpufreq/clk-reg-cpufreq
@@ -0,0 +1,7 @@
+Generic cpufreq driver based on clk and regulator APIs
+Required properties in /cpus/cpu@0:
+- cpu-freqs : cpu frequency points it support, in unit of Hz.
+- cpu-volts : cpu voltages required by the frequency point at the same index,
+ in unit of uV.
+- trans-latency : transition_latency, in unit of ns.