From: Fabrice Gasnier <fabrice.gasnier@st.com>
To: <alexandre.torgue@st.com>
Cc: <robh+dt@kernel.org>, <mcoquelin.stm32@gmail.com>,
<mark.rutland@arm.com>, <linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<fabrice.gasnier@st.com>
Subject: [PATCH 4/4] ARM: dts: stm32: add support for PWM on stm32mp157a-dk1
Date: Tue, 5 Nov 2019 13:52:21 +0100 [thread overview]
Message-ID: <1572958341-12404-5-git-send-email-fabrice.gasnier@st.com> (raw)
In-Reply-To: <1572958341-12404-1-git-send-email-fabrice.gasnier@st.com>
Add PWM support on stm32mp157a-dk1 board. There are several timers channels
made available on GPIO expansion and arduino connectors:
- Add PWM and trigger support (these timers can also be used as trigger
for ADC).
It's easier then to configure them all. But keep them disabled by default,
so the pins are kept in their initial state to lower power consumption.
This way they can also be used as GPIO.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
---
arch/arm/boot/dts/stm32mp157a-dk1.dts | 85 +++++++++++++++++++++++++++++++++++
1 file changed, 85 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts b/arch/arm/boot/dts/stm32mp157a-dk1.dts
index 984a47c..d4e37ab 100644
--- a/arch/arm/boot/dts/stm32mp157a-dk1.dts
+++ b/arch/arm/boot/dts/stm32mp157a-dk1.dts
@@ -502,6 +502,91 @@
status = "okay";
};
+&timers1 {
+ /* spare dmas for other usage */
+ /delete-property/dmas;
+ /delete-property/dma-names;
+ status = "disabled";
+ pwm {
+ pinctrl-0 = <&pwm1_pins_a>;
+ pinctrl-1 = <&pwm1_sleep_pins_a>;
+ pinctrl-names = "default", "sleep";
+ status = "okay";
+ };
+ timer@0 {
+ status = "okay";
+ };
+};
+
+&timers3 {
+ /delete-property/dmas;
+ /delete-property/dma-names;
+ status = "disabled";
+ pwm {
+ pinctrl-0 = <&pwm3_pins_a>;
+ pinctrl-1 = <&pwm3_sleep_pins_a>;
+ pinctrl-names = "default", "sleep";
+ status = "okay";
+ };
+ timer@2 {
+ status = "okay";
+ };
+};
+
+&timers4 {
+ /delete-property/dmas;
+ /delete-property/dma-names;
+ status = "disabled";
+ pwm {
+ pinctrl-0 = <&pwm4_pins_a &pwm4_pins_b>;
+ pinctrl-1 = <&pwm4_sleep_pins_a &pwm4_sleep_pins_b>;
+ pinctrl-names = "default", "sleep";
+ status = "okay";
+ };
+ timer@3 {
+ status = "okay";
+ };
+};
+
+&timers5 {
+ /delete-property/dmas;
+ /delete-property/dma-names;
+ status = "disabled";
+ pwm {
+ pinctrl-0 = <&pwm5_pins_a>;
+ pinctrl-1 = <&pwm5_sleep_pins_a>;
+ pinctrl-names = "default", "sleep";
+ status = "okay";
+ };
+ timer@4 {
+ status = "okay";
+ };
+};
+
+&timers6 {
+ /delete-property/dmas;
+ /delete-property/dma-names;
+ status = "disabled";
+ timer@5 {
+ status = "okay";
+ };
+};
+
+&timers12 {
+ /delete-property/dmas;
+ /delete-property/dma-names;
+ status = "disabled";
+ pwm {
+ pinctrl-0 = <&pwm12_pins_a>;
+ pinctrl-1 = <&pwm12_sleep_pins_a>;
+ pinctrl-names = "default", "sleep";
+ status = "okay";
+ };
+ timer@11 {
+ status = "okay";
+ };
+};
+
&uart4 {
pinctrl-names = "default";
pinctrl-0 = <&uart4_pins_a>;
--
2.7.4
next prev parent reply other threads:[~2019-11-05 12:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-05 12:52 [PATCH 0/4] Update PWM support on stm32mp157 boards Fabrice Gasnier
2019-11-05 12:52 ` [PATCH 1/4] ARM: dts: stm32: add pwm sleep pin muxing for stm32mp157c-ed1 Fabrice Gasnier
2019-11-05 12:52 ` [PATCH 2/4] ARM: dts: stm32: add pwm pin muxing for stm32mp157a-dk1 Fabrice Gasnier
2019-11-05 12:52 ` [PATCH 3/4] ARM: dts: stm32: add pwm sleep pins to stm32mp157c-ev1 Fabrice Gasnier
2019-11-05 12:52 ` Fabrice Gasnier [this message]
2019-11-15 10:37 ` [PATCH 0/4] Update PWM support on stm32mp157 boards Alexandre Torgue
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