diff options
| author | Doug Anderson <dianders@chromium.org> | 2014-09-11 00:30:15 -0400 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2014-09-11 05:22:43 -0400 |
| commit | 0f4fc382428f71453d195925a3c63efc48452417 (patch) | |
| tree | ad3a1e903e3aa4d5efeb7436374e87fc9884e3e6 /arch/arm/boot/dts/rk3288-evb-rk808.dts | |
| parent | 60c20784f243199599a425f73b8060da3a0f5ead (diff) | |
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.dts | 1 |
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 @@ | |||
| 18 | }; | 18 | }; |
| 19 | 19 | ||
| 20 | &i2c0 { | 20 | &i2c0 { |
| 21 | clock-frequency = <400000>; | ||
| 21 | status = "okay"; | 22 | status = "okay"; |
| 22 | 23 | ||
| 23 | rk808: pmic@1b { | 24 | rk808: pmic@1b { |