From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Konrad Dybcio <konrad.dybcio@somainline.org>
Cc: Stephan Gerhold <stephan@gerhold.net>,
~postmarketos/upstreaming@lists.sr.ht,
martin.botka@somainline.org,
angelogioacchino.delregno@somainline.org,
marijn.suijten@somainline.org, jamipkettunen@somainline.org,
Andy Gross <agross@kernel.org>, Rob Herring <robh+dt@kernel.org>,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, Kees Cook <keescook@chromium.org>,
Anton Vorontsov <anton@enomsg.org>,
Colin Cross <ccross@android.com>, Tony Luck <tony.luck@intel.com>
Subject: Re: [PATCH v3 3/3] arm64: dts: qcom: Add support for SONY Xperia X Performance / XZ / XZs (msm8996, Tone platform)
Date: Tue, 8 Jun 2021 14:47:04 -0500 [thread overview]
Message-ID: <YL/JOJibHOXYCOty@builder.lan> (raw)
In-Reply-To: <409ef9ca-0533-ddc3-3332-5cc2af0aa1e0@somainline.org>
On Tue 08 Jun 14:08 CDT 2021, Konrad Dybcio wrote:
>
> >> +/delete-node/ &hdmi;
> >> +/delete-node/ &hdmi_phy;
> >> +/delete-node/ &mdp5_intf3_out;
> > Is it not enough to set those to status = "disabled"? Kind of strange
> > that you have to delete those entirely. I guess ideally "hdmi" should
> > even be disabled by default in the SoC device tree.
>
> Saving memory and bloat where possible. Deleting these makes inspecting decompiled
> DTBs simpler and allows for ever so slightly bigger kernel images (the boot partition is finite).
>
While that is true, the typical method is to disable the nodes, so
please follow that.
>
>
> >> +
> >> + panel_tvdd: tvdd-regulator {
> >> + compatible = "regulator-fixed";
> >> + regulator-name = "panel_tvdd";
> >> + gpio = <&tlmm 50 GPIO_ACTIVE_HIGH>;
> > regulator-fixed is active-low without "enable-active-high;"
> > If that's what you want it's probably more clear to write
> > GPIO_ACTIVE_LOW. Otherwise, perhaps you forgot that property? :)
>
> Interestingly enough it doesn't work *with* the property, but does without :|
The regulator-fixed driver overrides the flag by the presence of
'enable-active-high" property, so if it works without said property that
would imply that your control is active-low.
So please make the flag reflect that.
Regards,
Bjorn
prev parent reply other threads:[~2021-06-08 19:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-08 15:27 [PATCH v3 1/3] arm64: dts: qcom: Add PMI8996 DTSI file Konrad Dybcio
2021-06-08 15:27 ` [PATCH v3 2/3] arm64: dts: qcom: Add MSM8996v3.0 " Konrad Dybcio
2021-06-08 15:27 ` [PATCH v3 3/3] arm64: dts: qcom: Add support for SONY Xperia X Performance / XZ / XZs (msm8996, Tone platform) Konrad Dybcio
2021-06-08 16:39 ` Stephan Gerhold
2021-06-08 19:08 ` Konrad Dybcio
2021-06-08 19:47 ` Bjorn Andersson [this message]
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