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authorDoug Anderson <dianders@chromium.org>2014-09-10 21:30:15 -0700
committerHeiko Stuebner <heiko@sntech.de>2014-09-11 11:22:43 +0200
commit0f4fc382428f71453d195925a3c63efc48452417 (patch)
treead3a1e903e3aa4d5efeb7436374e87fc9884e3e6 /arch/arm/boot/dts/rk3288-evb-rk808.dts
parent60c20784f243199599a425f73b8060da3a0f5ead (diff)
downloadblackbird-op-linux-0f4fc382428f71453d195925a3c63efc48452417.tar.gz
blackbird-op-linux-0f4fc382428f71453d195925a3c63efc48452417.zip
ARM: dts: Switch i2c0 to 400kHz on rk3288-evb-rk808
We should be able to talk to the PMIC at 400kHz. No need to talk at the slow 100kHz. As measured by ftrace (with a bunch of extra patches, since cpufreq for rk808 hasn't landed yet): before this change: cpu0_set_target() => ~500us after this change: cpu0_set_target() => ~300us Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by Addy Ke <addy.ke@rock-chips.com> Tested-by Addy Ke <addy.ke@rock-chips.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'arch/arm/boot/dts/rk3288-evb-rk808.dts')
-rw-r--r--arch/arm/boot/dts/rk3288-evb-rk808.dts1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/rk3288-evb-rk808.dts b/arch/arm/boot/dts/rk3288-evb-rk808.dts
index 36db177f6a5a..ff522f8e3df4 100644
--- a/arch/arm/boot/dts/rk3288-evb-rk808.dts
+++ b/arch/arm/boot/dts/rk3288-evb-rk808.dts
@@ -18,6 +18,7 @@
};
&i2c0 {
+ clock-frequency = <400000>;
status = "okay";
rk808: pmic@1b {
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