linux-kernel - Re: [PATCH RFC 12/14] arm64: dts: qcom: Add initial support for MSM8917

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Message-ID: <h4dy2fesraalsri4gclenp4luwqjoh7iv2xysqnf6uwy3qp5de@x6iqc6pa365i>
Date: Fri, 25 Oct 2024 01:24:25 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: barnabas.czeman@...nlining.org
Cc: Bjorn Andersson <andersson@...nel.org>, 
	Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Konrad Dybcio <konradybcio@...nel.org>, Lee Jones <lee@...nel.org>, Amit Kucheria <amitk@...nel.org>, 
	Thara Gopinath <thara.gopinath@...il.com>, "Rafael J. Wysocki" <rafael@...nel.org>, 
	Daniel Lezcano <daniel.lezcano@...aro.org>, Zhang Rui <rui.zhang@...el.com>, 
	Lukasz Luba <lukasz.luba@....com>, Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>, 
	Robin Murphy <robin.murphy@....com>, Srinivas Kandagatla <srinivas.kandagatla@...aro.org>, 
	linux-arm-msm@...r.kernel.org, linux-gpio@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org, iommu@...ts.linux.dev, 
	Otto Pflüger <otto.pflueger@...cue.de>
Subject: Re: [PATCH RFC 12/14] arm64: dts: qcom: Add initial support for
 MSM8917

On Mon, Oct 21, 2024 at 11:14:55PM +0200, barnabas.czeman@...nlining.org wrote:
> On 2024-10-19 15:43, Dmitry Baryshkov wrote:
> > On Sat, Oct 19, 2024 at 01:50:49PM +0200, Barnabás Czémán wrote:
> > > From: Otto Pflüger <otto.pflueger@...cue.de>
> > > 
> > > Add initial support for MSM8917 SoC.
> > > 
> > > Signed-off-by: Otto Pflüger <otto.pflueger@...cue.de>
> > > [reword commit, rebase, fix schema errors]
> > > Signed-off-by: Barnabás Czémán <barnabas.czeman@...nlining.org>
> > > ---
> > >  arch/arm64/boot/dts/qcom/msm8917-pins.dtsi |  344 ++++++
> > >  arch/arm64/boot/dts/qcom/msm8917.dtsi      | 1557
> > > ++++++++++++++++++++++++++++
> > >  arch/arm64/boot/dts/qcom/pm8916.dtsi       |    9 +-
> > >  3 files changed, 1909 insertions(+), 1 deletion(-)
> > > 
> > > diff --git a/arch/arm64/boot/dts/qcom/msm8917-pins.dtsi
> > > b/arch/arm64/boot/dts/qcom/msm8917-pins.dtsi
> > > new file mode 100644
> > > index 0000000000000000000000000000000000000000..f283ffd59b8aca8e510ef95d5526af9592a1c036
> > > --- /dev/null
> > > +++ b/arch/arm64/boot/dts/qcom/msm8917-pins.dtsi
> > 
> > Please merge into msm8917.dtsi (for generic parts) and
> > msm8917-boatd.dtsi (for board-specific parts).
> > 
> > > @@ -0,0 +1,344 @@
> > > +// SPDX-License-Identifier: GPL-2.0
> > 
> > If possible, GPL-2.0 OR MIT, or GPL-2.0 OR BSD-2/3-Clause
> Unfortunatelly i cannot change the license i do not own the original code.

Ack

> > 
> > > +			tsens_caldata: caldata@d0 {
> > > +				reg = <0x01d8 0x14>;
> > > +			};
> > 
> > No, individual bit definitions for each of tsens fuse values.
> > 
> > > +		};
> > > +
> > > +		rpm_msg_ram: sram@...00 {
> > > +			compatible = "qcom,rpm-msg-ram";
> > > +			reg = <0x00060000 0x8000>;
> > > +		};
> > > +
> > > +		tsens: thermal-sensor@...000 {
> > > +			compatible = "qcom,msm8917-tsens", "qcom,tsens-v1";
> > > +			reg = <0x004a9000 0x1000>,
> > > +			      <0x004a8000 0x1000>;
> > > +			nvmem-cells = <&tsens_caldata>;
> > > +			nvmem-cell-names = "calib";
> > 
> > And here too, individual bits instead of a single blob.
> I do not know how to do that i have only find some parts at downstream
> driver to be able to separate
> the cells but i do not have every information for it.

Well, you don't have to describe every information. I'm simply asking
you to replace single tsens_caldata entry with per-sensor and per-point
data, see e.g. msm8976.dtsi and data_8976 / ops_8976.

> > 
> > > +			#qcom,sensors = <10>;
> > > +			interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
> > > +			interrupt-names = "uplow";
> > > +			#thermal-sensor-cells = <1>;
> > > +		};
> > > +
> > > +

[...]

> > > +		gpu: gpu@...0000 {
> > > +			compatible = "qcom,adreno-306.32", "qcom,adreno";
> > 
> > Is it really .32 ?
> Yes it is A306A (Adreno 308)

Ack

-- 
With best wishes
Dmitry