From: Tim Harvey <tharvey@gateworks.com>
To: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
Philipp Zabel <p.zabel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
Shawn Guo <shawn.guo@freescale.com>,
Lucas Stach <l.stach@pengutronix.de>,
Silvio F <silvio.fricke@gmail.com>,
Christian Hemp <c.hemp@phytec.de>,
Russell King <rmk+kernel@arm.linux.org.uk>,
Iain Paton <ipaton0@gmail.com>,
devicetree@vger.kernel.org
Subject: [PATCH 5/5] ARM: imx: ventana: enable LDO bypass mode for GW54xx
Date: Thu, 30 Oct 2014 21:27:11 -0700 [thread overview]
Message-ID: <1414729631-11005-6-git-send-email-tharvey@gateworks.com> (raw)
In-Reply-To: <1414729631-11005-1-git-send-email-tharvey@gateworks.com>
The GW54xx baseboard has a PFUZE100 PMIC capable of regulating the
core voltages (VDD_ARM, VDD_SOC) externally such that the internal IMX6
anatop LDO regulators are not needed. This provides a power reduction
(as the PMIC is more efficient than the LDO's) as well as moves some
of the power/thermal burden from the IMX to the PMIC.
Cc: devicetree@vger.kernel.org
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
arch/arm/boot/dts/imx6qdl-gw54xx.dtsi | 55 +++++++++++++++++++++++++----------
1 file changed, 39 insertions(+), 16 deletions(-)
diff --git a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
index cf13239..3ab0872 100644
--- a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
@@ -142,6 +142,11 @@
status = "okay";
};
+&cpu0 {
+ arm-supply = <®_vdd_arm>;
+ soc-supply = <®_vdd_soc>;
+};
+
&fec {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_enet>;
@@ -215,7 +220,8 @@
reg = <0x08>;
regulators {
- sw1a_reg: sw1ab {
+ /* VDD_ARM */
+ reg_vdd_arm: sw1ab {
regulator-min-microvolt = <300000>;
regulator-max-microvolt = <1875000>;
regulator-boot-on;
@@ -223,7 +229,8 @@
regulator-ramp-delay = <6250>;
};
- sw1c_reg: sw1c {
+ /* VDD_SOC */
+ reg_vdd_soc: sw1c {
regulator-min-microvolt = <300000>;
regulator-max-microvolt = <1875000>;
regulator-boot-on;
@@ -231,77 +238,93 @@
regulator-ramp-delay = <6250>;
};
- sw2_reg: sw2 {
+ /* VDD_HIGH */
+ reg_3p0v: sw2 {
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <3950000>;
regulator-boot-on;
regulator-always-on;
};
- sw3a_reg: sw3a {
+ /* VDD_DDR */
+ reg_ddra: sw3a {
regulator-min-microvolt = <400000>;
regulator-max-microvolt = <1975000>;
regulator-boot-on;
regulator-always-on;
};
- sw3b_reg: sw3b {
+ /* VDD_DDR */
+ reg_ddrb: sw3b {
regulator-min-microvolt = <400000>;
regulator-max-microvolt = <1975000>;
regulator-boot-on;
regulator-always-on;
};
- sw4_reg: sw4 {
+ /* VDD_1P8 */
+ reg_1p8v: sw4 {
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <3300000>;
};
- swbst_reg: swbst {
+ /* VDD_5P0 */
+ reg_swbst: swbst {
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5150000>;
};
- snvs_reg: vsnvs {
+ reg_snvs: vsnvs {
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <3000000>;
regulator-boot-on;
regulator-always-on;
};
- vref_reg: vrefddr {
+ /* VDD_VREF */
+ reg_vref: vrefddr {
regulator-boot-on;
regulator-always-on;
};
- vgen1_reg: vgen1 {
+ /* VDD_PCI_1P5_1 */
+ reg_1p5va: vgen1 {
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1550000>;
+ regulator-boot-on;
+ regulator-always-on;
};
- vgen2_reg: vgen2 {
+ /* VDD_PCI_1P5_2 */
+ reg_1p5vb: vgen2 {
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1550000>;
+ regulator-boot-on;
+ regulator-always-on;
};
- vgen3_reg: vgen3 {
+ /* unused */
+ reg_vgen3: vgen3 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
};
- vgen4_reg: vgen4 {
+ /* VDD_AUD_1P8 */
+ reg_aud_1p8v: vgen4 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
- vgen5_reg: vgen5 {
+ /* VDD_2P5 */
+ reg_2p5v: vgen5 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
- vgen6_reg: vgen6 {
+ /* unused */
+ reg_vgen6: vgen6 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
@@ -320,7 +343,7 @@
compatible = "fsl,sgtl5000";
reg = <0x0a>;
clocks = <&clks 201>;
- VDDA-supply = <&sw4_reg>;
+ VDDA-supply = <®_1p8v>;
VDDIO-supply = <®_3p3v>;
};
--
1.8.3.2
prev parent reply other threads:[~2014-10-31 4:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1414729631-11005-1-git-send-email-tharvey@gateworks.com>
2014-10-31 4:27 ` [PATCH 3/5] ARM: dts: imx: add cpu0 alias Tim Harvey
2014-10-31 4:27 ` Tim Harvey [this message]
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=1414729631-11005-6-git-send-email-tharvey@gateworks.com \
--to=tharvey@gateworks.com \
--cc=c.hemp@phytec.de \
--cc=devicetree@vger.kernel.org \
--cc=festevam@gmail.com \
--cc=ipaton0@gmail.com \
--cc=l.stach@pengutronix.de \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=p.zabel@pengutronix.de \
--cc=rmk+kernel@arm.linux.org.uk \
--cc=shawn.guo@freescale.com \
--cc=silvio.fricke@gmail.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).