On 07/01/2014 01:10 PM, Sachin Kamat wrote: > Hi Chanwoo, > > On Tue, Jul 1, 2014 at 9:34 AM, Chanwoo Choi <cw00.choi@xxxxxxxxxxx> wrote: >> Hi Sachin, >> >> On 07/01/2014 12:33 PM, Sachin Kamat wrote: >>> Hi Chanwoo, >>> >>> On Tue, Jul 1, 2014 at 6:10 AM, Chanwoo Choi <cw00.choi@xxxxxxxxxxx> wrote: >>>> This patch add TMU (Thermal Management Unit) dt node to monitor the high >>>> temperature for Exynos3250. >>>> >>>> Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx> >>>> Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> >>>> --- >>>> This patch has a dependency on following patch [1]: >>>> [1] https://lkml.org/lkml/2014/6/30/805 >>>> >>>> arch/arm/boot/dts/exynos3250.dtsi | 10 ++++++++++ >>>> 1 file changed, 10 insertions(+) >>>> >>>> diff --git a/arch/arm/boot/dts/exynos3250.dtsi b/arch/arm/boot/dts/exynos3250.dtsi >>>> index 3660cab..1e566af 100644 >>>> --- a/arch/arm/boot/dts/exynos3250.dtsi >>>> +++ b/arch/arm/boot/dts/exynos3250.dtsi >>>> @@ -192,6 +192,16 @@ >>>> status = "disabled"; >>>> }; >>>> >>>> + tmu: tmu@100C0000 { >>>> + compatible = "samsung,exynos3250-tmu"; >>>> + interrupt-parent = <&gic>; >>>> + reg = <0x100C0000 0x100>; >>>> + interrupts = <0 216 0>; >>>> + clocks = <&cmu CLK_TMU_APBIF>; >>>> + clock-names = "tmu_apbif"; >>>> + status = "disabled"; >>> >>> I don't think there would be any board specific properties needed. Hence >>> leave the status as enabled (by deleting the above line). >>> >> >> I think that if specific board need TMU feature, dts file for specific board >> should include tmu dt node with 'okay' status. The specific board based on >> Exynos3250 might not need TMU feature. > > The status field in DT node is not meant for stating the build configuration but > represents the readiness of the hardware for usage on the platform. If > a particular > board does not need this feature it needs to be disabled in the build > config and only > for any special requirements disable it in board file. TMU (Thermal Management Unit) needs specific regulator for TMU power as following: The regulator for TMU is dependent on board. For exmaple: in board dts file including tmu dt &tmu { vtmu-supply = <&ldo7_reg>; status = "okay"; }; -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
