Re: [PATCH v4 6/6] arm64: dts: sdm845: Add tsens nodes

From: Amit Kucheria <amit.kucheria@linaro.org>
To: Matthias Kaehlcke <mka@chromium.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Rajendra Nayak <rnayak@codeaurora.org>,
	linux-arm-msm <linux-arm-msm@vger.kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Eduardo Valentin <edubezval@gmail.com>,
	smohanad@codeaurora.org,
	Vivek Gautam <vivek.gautam@codeaurora.org>,
	Andy Gross <andy.gross@linaro.org>,
	David Brown <david.brown@linaro.org>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	"open list:ARM/QUALCOMM SUPPORT" <linux-soc@vger.kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
	<devicetree@vger.kernel.org>,
	lakml <linux-arm-kernel@lists.infradead.org>,
	Douglas Anderson <dianders@chromium.org>
Subject: Re: [PATCH v4 6/6] arm64: dts: sdm845: Add tsens nodes
Date: Mon, 9 Jul 2018 21:34:55 +0530	[thread overview]
Message-ID: <CAHLCerP0z-G+YqXOe8VYSTVPfSYiR+yywskijiD7y0Lz=2AQQQ@mail.gmail.com> (raw)
In-Reply-To: <20180709160131.GM129942@google.com>

On Mon, Jul 9, 2018 at 9:31 PM, Matthias Kaehlcke <mka@chromium.org> wrote:
> On Mon, Jul 09, 2018 at 04:56:51PM +0530, Amit Kucheria wrote:
>> On Wed, Jul 4, 2018 at 3:18 AM, Matthias Kaehlcke <mka@chromium.org> wrote:
>> > Hi,
>> >
>> > On Mon, Jul 02, 2018 at 06:14:09PM +0530, Amit Kucheria wrote:
>> >> SDM845 has two tsens blocks, one with 13 sensors and the other with 8
>> >> sensors.
>> >>
>> >> Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
>> >> ---
>> >>  arch/arm64/boot/dts/qcom/sdm845.dtsi | 16 ++++++++++++++++
>> >>  1 file changed, 16 insertions(+)
>> >>
>> >> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
>> >> index cdaabeb..edf8505 100644
>> >> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
>> >> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
>> >> @@ -221,6 +221,22 @@
>> >>                       #interrupt-cells = <2>;
>> >>               };
>> >>
>> >> +             tsens0: tsens@c222000 {
>> >> +                     compatible = "qcom,tsens-v2.4.0", "qcom,tsens-v2";
>> >> +                     reg = <0xc263000 0x1ff>, /* TM */
>> >> +                           <0xc222000 0x1ff>; /* SROT */
>> >> +                     #qcom,sensors = <13>;
>> >> +                     #thermal-sensor-cells = <1>;
>> >> +             };
>> >> +
>> >> +             tsens1: tsens@c223000 {
>> >> +                     compatible = "qcom,tsens-v2.4.0", "qcom,tsens-v2";
>> >> +                     reg = <0xc265000 0x1ff>, /* TM */
>> >> +                           <0xc223000 0x1ff>; /* SROT */
>> >> +                     #qcom,sensors = <8>;
>> >> +                     #thermal-sensor-cells = <1>;
>> >> +             };
>> >> +
>> >>               spmi_bus: spmi@c440000 {
>> >>                       compatible = "qcom,spmi-pmic-arb";
>> >>                       reg = <0xc440000 0x1100>,
>> >
>> > I tested this series on an SDM845 board. Temperatures can be read from
>> > the tsens0 sensors, however for tsens1 sensors I get:
>> >
>> > cat temp
>> > cat: temp: No data available
>> >
>> > TRDY_READY_BIT set when reading TRDY_OFFSET in get_temp_tsens_v2().
>> > Unfortunately I currently have no documentation of the registers or the
>> > thermal sensors in general and couldn't investigate further.
>> >
>> > Any idea what could be the problem?
>>
>> Strangely enough, I'm seeing this now after rebuilding my integration
>> branch to test some other bits.
>>
>> I've sent another version with this patch removed while I investigate
>> this. Could you check if you're able to read all 8 sensors with v5?
>
> With v6 all sensors can be read, thanks!

Great! Would it be OK to add your Tested-by tag?