From: Marek Vasut <marex@denx.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Marek Vasut <marex@denx.de>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
linux-stm32@st-md-mailman.stormreply.com
Subject: [PATCH] ARM: dts: stm32: Move DHCOR BUCK3 VDD 2V9 adjustment to 1V8 DTSI
Date: Wed, 4 May 2022 14:49:45 +0200 [thread overview]
Message-ID: <20220504124945.77331-1-marex@denx.de> (raw)
The Buck3 on DHCOR is used to supply IO voltage. It can output either 3V3
in the default DHCOR configuration, or 2V9 in case of AV96 DHCOR variant
which has extra Empirion DCDC converter in front of the 1V8 IO supply, or
outright 1V8 in case of 1V8 IO DHCOR without the Empirion DCDC converter.
The 2V9 mode in case of AV96 DHCOR variant is used to reduce unnecessarily
high input voltage to the Empirion DCDC converter, so move it into matching
DTSI to stop confusing users.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: linux-stm32@st-md-mailman.stormreply.com
To: linux-arm-kernel@lists.infradead.org
---
arch/arm/boot/dts/stm32mp15xx-dhcor-io1v8.dtsi | 5 +++++
arch/arm/boot/dts/stm32mp15xx-dhcor-som.dtsi | 4 ++--
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/stm32mp15xx-dhcor-io1v8.dtsi b/arch/arm/boot/dts/stm32mp15xx-dhcor-io1v8.dtsi
index 75172314d7afd..9937b28548c23 100644
--- a/arch/arm/boot/dts/stm32mp15xx-dhcor-io1v8.dtsi
+++ b/arch/arm/boot/dts/stm32mp15xx-dhcor-io1v8.dtsi
@@ -18,6 +18,11 @@ vdd_io: regulator-buck-io {
};
};
+&vdd {
+ regulator-min-microvolt = <2900000>;
+ regulator-max-microvolt = <2900000>;
+};
+
&pwr_regulators {
vdd-supply = <&vdd_io>;
};
diff --git a/arch/arm/boot/dts/stm32mp15xx-dhcor-som.dtsi b/arch/arm/boot/dts/stm32mp15xx-dhcor-som.dtsi
index 6336c3ca0f0e2..134a798ad3f23 100644
--- a/arch/arm/boot/dts/stm32mp15xx-dhcor-som.dtsi
+++ b/arch/arm/boot/dts/stm32mp15xx-dhcor-som.dtsi
@@ -119,8 +119,8 @@ vdd_ddr: buck2 {
vdd: buck3 {
regulator-name = "vdd";
- regulator-min-microvolt = <2900000>;
- regulator-max-microvolt = <2900000>;
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
regulator-always-on;
regulator-initial-mode = <0>;
regulator-over-current-protection;
--
2.35.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2022-05-04 12:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-04 12:49 Marek Vasut [this message]
2022-06-13 7:42 ` [PATCH] ARM: dts: stm32: Move DHCOR BUCK3 VDD 2V9 adjustment to 1V8 DTSI Alexandre TORGUE
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=20220504124945.77331-1-marex@denx.de \
--to=marex@denx.de \
--cc=alexandre.torgue@foss.st.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-stm32@st-md-mailman.stormreply.com \
/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).