From: Shawn Guo <shawn.guo@linaro.org>
To: Sebastian Reichel <sre@kernel.org>
Cc: Stephan Gerhold <stephan@gerhold.net>,
Rob Herring <robh+dt@kernel.org>, Vinod Koul <vkoul@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-pm@vger.kernel.org, Shawn Guo <shawn.guo@linaro.org>
Subject: [PATCH 3/3] power: reset: qcom-pon: Add support for 'qcom,pon-reboot-not-used'
Date: Mon, 5 Jul 2021 10:50:32 +0800 [thread overview]
Message-ID: <20210705025032.12804-4-shawn.guo@linaro.org> (raw)
In-Reply-To: <20210705025032.12804-1-shawn.guo@linaro.org>
Check property 'qcom,pon-reboot-not-used' and skip reboot-mode setup
if the property is present. This is useful for devices that use IMEM
instead of PON register to pass reboot mode, but still want to populate
pwrkey and resin devices.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---
drivers/power/reset/qcom-pon.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/power/reset/qcom-pon.c b/drivers/power/reset/qcom-pon.c
index 4a688741a88a..85fae9e85878 100644
--- a/drivers/power/reset/qcom-pon.c
+++ b/drivers/power/reset/qcom-pon.c
@@ -47,6 +47,14 @@ static int pm8916_pon_probe(struct platform_device *pdev)
struct pm8916_pon *pon;
int error;
+ if (device_property_present(&pdev->dev, "qcom,pon-reboot-not-used")) {
+ /*
+ * Skip reboot-mode setup and registration if PON is not used
+ * for passing reboot mode at all.
+ */
+ goto done;
+ }
+
pon = devm_kzalloc(&pdev->dev, sizeof(*pon), GFP_KERNEL);
if (!pon)
return -ENOMEM;
@@ -75,6 +83,7 @@ static int pm8916_pon_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, pon);
+done:
return devm_of_platform_populate(&pdev->dev);
}
--
2.17.1
next prev parent reply other threads:[~2021-07-05 2:51 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-05 2:50 [PATCH 0/3] Add 'qcom,pon-reboot-not-used' support in PON driver Shawn Guo
2021-07-05 2:50 ` [PATCH 1/3] dt-bindings: power: reset: Convert qcom,pon to DT schema Shawn Guo
2021-07-12 15:45 ` Rob Herring
2021-07-14 11:47 ` Shawn Guo
2021-07-05 2:50 ` [PATCH 2/3] dt-bindings: qcom,pon: Add 'qcom,pon-reboot-not-used' property Shawn Guo
2021-07-12 17:08 ` Bjorn Andersson
2021-07-05 2:50 ` Shawn Guo [this message]
2021-07-12 17:12 ` [PATCH 3/3] power: reset: qcom-pon: Add support for 'qcom,pon-reboot-not-used' Bjorn Andersson
2021-07-14 11:49 ` Shawn Guo
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=20210705025032.12804-4-shawn.guo@linaro.org \
--to=shawn.guo@linaro.org \
--cc=bjorn.andersson@linaro.org \
--cc=devicetree@vger.kernel.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=robh+dt@kernel.org \
--cc=sre@kernel.org \
--cc=stephan@gerhold.net \
--cc=vkoul@kernel.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).