From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Andy Gross <andy.gross@linaro.org>,
David Brown <david.brown@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Linus Walleij <linus.walleij@linaro.org>,
Stephen Boyd <sboyd@codeaurora.org>
Subject: [PATCH] arm64: dts: sdm845-mtp: Reserve reserved gpios
Date: Fri, 2 Nov 2018 14:45:32 -0700 [thread overview]
Message-ID: <20181102214532.17661-1-bjorn.andersson@linaro.org> (raw)
With the introduction of commit 3edfb7bd76bd ("gpiolib: Show correct
direction from the beginning") the gpiolib will attempt to read the
direction of all pins, which triggers a read from protected register
regions.
The pins 0 through 3 and 81 through 84 are protected, so mark these as
reserved.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
Given that mainline has not yet booted on the SDM845 MTP or MSM8998 MTP
(which seems to be the affected platform), I think it's better to pick this
change than to rework the offending commit.
arch/arm64/boot/dts/qcom/sdm845-mtp.dts | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
index eedfaf8922e2..d667eee4e6d0 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
@@ -352,6 +352,10 @@
status = "okay";
};
+&tlmm {
+ gpio-reserved-ranges = <0 4>, <81 4>;
+};
+
&uart9 {
status = "okay";
};
--
2.18.0
next reply other threads:[~2018-11-02 21:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-02 21:45 Bjorn Andersson [this message]
2018-11-04 3:15 ` [PATCH] arm64: dts: sdm845-mtp: Reserve reserved gpios Stephen Boyd
2018-11-04 15:56 ` Linus Walleij
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20181102214532.17661-1-bjorn.andersson@linaro.org \
--to=bjorn.andersson@linaro.org \
--cc=andy.gross@linaro.org \
--cc=david.brown@linaro.org \
--cc=devicetree@vger.kernel.org \
--cc=linus.walleij@linaro.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-soc@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=robh+dt@kernel.org \
--cc=sboyd@codeaurora.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).