From: dillon.minfei@gmail.com
To: mcoquelin.stm32@gmail.com, alexandre.torgue@st.com,
philippe.schenker@toradex.com
Cc: dillon min <dillon.minfei@gmail.com>,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 3/4] ARM: dts: stm32: enable stmpe811 on stm32429-disco board
Date: Thu, 7 May 2020 17:16:11 +0800 [thread overview]
Message-ID: <1588842971-20495-2-git-send-email-dillon.minfei@gmail.com> (raw)
In-Reply-To: <1588842971-20495-1-git-send-email-dillon.minfei@gmail.com>
From: dillon min <dillon.minfei@gmail.com>
Enable the stmpe811 touch screen on stm32429-disco board.
Signed-off-by: dillon min <dillon.minfei@gmail.com>
---
arch/arm/boot/dts/stm32f429-disco.dts | 47 +++++++++++++++++++++++++++++++++++
1 file changed, 47 insertions(+)
diff --git a/arch/arm/boot/dts/stm32f429-disco.dts b/arch/arm/boot/dts/stm32f429-disco.dts
index 30c0f67..fad1ec1 100644
--- a/arch/arm/boot/dts/stm32f429-disco.dts
+++ b/arch/arm/boot/dts/stm32f429-disco.dts
@@ -49,6 +49,8 @@
#include "stm32f429.dtsi"
#include "stm32f429-pinctrl.dtsi"
#include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/gpio/gpio.h>
/ {
model = "STMicroelectronics STM32F429i-DISCO board";
@@ -127,3 +129,48 @@
pinctrl-names = "default";
status = "okay";
};
+
+&i2c3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c3_pins>;
+ clock-frequency = <100000>;
+ status = "okay";
+
+ stmpe811@41 {
+ compatible = "st,stmpe811";
+ reg = <0x41>;
+ interrupts = <15 IRQ_TYPE_EDGE_FALLING>;
+ interrupt-parent = <&gpioa>;
+ /* 3.25 MHz ADC clock speed */
+ st,adc-freq = <1>;
+ /* 12-bit ADC */
+ st,mod-12b = <1>;
+ /* internal ADC reference */
+ st,ref-sel = <0>;
+ /* ADC converstion time: 80 clocks */
+ st,sample-time = <4>;
+
+ stmpe_touchscreen {
+ compatible = "st,stmpe-ts";
+ /* 8 sample average control */
+ st,ave-ctrl = <3>;
+ /* 7 length fractional part in z */
+ st,fraction-z = <7>;
+ /*
+ * 50 mA typical 80 mA max touchscreen drivers
+ * current limit value
+ */
+ st,i-drive = <1>;
+ /* 1 ms panel driver settling time */
+ st,settling = <3>;
+ /* 5 ms touch detect interrupt delay */
+ st,touch-det-delay = <5>;
+ };
+
+ stmpe_adc {
+ compatible = "st,stmpe-adc";
+ /* forbid to use ADC channels 3-0 (touch) */
+ st,norequest-mask = <0x0F>;
+ };
+ };
+};
--
2.7.4
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next prev parent reply other threads:[~2020-05-07 9:16 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-07 9:16 [PATCH 3/4] ARM: dts: stm32: enable stmpe811 on stm32429-disco board dillon.minfei
2020-05-07 9:16 ` dillon.minfei [this message]
2020-05-07 9:42 ` Alexandre Torgue
2020-05-07 9:29 ` Philippe Schenker
-- strict thread matches above, loose matches on Subject: below --
2020-05-07 11:15 [PATCH V2 " dillon.minfei
2020-05-07 11:56 ` Alexandre Torgue
[not found] ` <CAPTRvHns7WZj49O2MKHN-ByJpHjYftCqakHN_XOzTwMkg57z0Q@mail.gmail.com>
2020-05-07 12:20 ` [PATCH " Alexandre Torgue
2020-05-07 7:47 dillon.minfei
2020-05-07 8:32 ` Philippe Schenker
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